正式上线"自定义线路"功能(仅限付费用户组)

- 文件管理器分页加载、排序偏好、桌面表头排序、移动端排序菜单、Ctrl/Cmd+F搜索、Esc 关闭搜索、鼠标右滑返回上级。
- 移动端同步状态页、同步统计卡片、同步任务/累计统计事件、同步页布局更新。
- Android 相册同步默认路径改为 DCIM/Camera，下载路径改用 external_path。
- Rust sync-core 更新：Android 日志依赖、AlbumUpload/AlbumDownload、MirrorWcf 统计修复、Linux FUSE镜像挂载与读写同步支持。

- 依赖更新：external_path、fl_chart、pdfrx 升级，并修了 pdfrx 新版本的deprecated API。
- 新增文件包括：sort_options.dart、sync_page_android.dart、sync_stats_card.dart、platform/fuse.rs、sync_engine/fuse.rs。

.gitea/workflows/android-release.yml

@@ -140,6 +140,8 @@ jobs:
 
       - name: Build Android release APK
         shell: bash
+        env:
+          IP_NODE_API_BASE_URL: ${{ secrets.IP_NODE_API_BASE_URL }}
         run: |
           set -euo pipefail
 
@@ -151,8 +153,13 @@ jobs:
             rm -rf "$pkg_dir"
           fi
 
+          build_args=(--release)
+          if [ -n "${IP_NODE_API_BASE_URL:-}" ]; then
+            build_args+=("--dart-define=IP_NODE_API_BASE_URL=${IP_NODE_API_BASE_URL}")
+          fi
+
           echo "Building Flutter Android release APK..."
-          flutter build apk -v --release
+          flutter build apk "${build_args[@]}"
 
           mkdir -p "$pkg_dir"
           apk_path="$(find "$PWD/build/app/outputs" -type f -name '*release*.apk' | head -n 1)"
@@ -191,7 +198,7 @@ jobs:
             exit 1
           fi
 
-          if [[ "$GITHUB_REF" == refs/tags/android-app-v* ]]; then
+          if [[ "$GITHUB_REF" == refs/tags/v* ]]; then
             tag_name="${GITHUB_REF#refs/tags/}"
           else
             app_version="$(awk -F '[:+]' '/^version:/ {gsub(/[[:space:]]/, "", $2); print $2; exit}' pubspec.yaml)"
@@ -199,7 +206,7 @@ jobs:
               echo "Unable to resolve app version from pubspec.yaml."
               exit 1
             fi
-            tag_name="android-app-v${app_version}"
+            tag_name="v${app_version}"
           fi
 
           echo "tag_name=$tag_name" >> "$GITHUB_OUTPUT"
@@ -249,7 +256,7 @@ jobs:
 
           releases_url="$GITEA_API_URL/repos/$GITEA_OWNER/$GITEA_REPO/releases"
           release_by_tag_url="$releases_url/tags/$TAG_NAME"
-          export RELEASE_TITLE="Android App APK ${TAG_NAME}"
+          export RELEASE_TITLE="${TAG_NAME}"
           export RELEASE_BODY="Android app installation package (APK) for ${TAG_NAME}."
 
           status="$(curl -sS -o release.json -w "%{http_code}" \
@@ -265,7 +272,7 @@ jobs:
           print(json.dumps({
               "tag_name": tag,
               "target_commitish": os.environ.get("TARGET_COMMITISH", ""),
-              "name": f"Android App APK {tag}",
+              "name": os.environ["RELEASE_TITLE"],
               "body": f"Android app installation package (APK) for {tag}.",
               "draft": False,
               "prerelease": False,
@@ -353,7 +360,7 @@ jobs:
             fi
           done < asset-ids-to-delete.txt
 
-          release_asset_name="gongyun-${TAG_NAME}.apk"
+          release_asset_name="app-release-${TAG_NAME}.apk"
           curl -sS -f \
             -X POST \
             -H "Authorization: token $GITEA_TOKEN" \

.gitignore

@@ -21,6 +21,7 @@ migrate_working_dir/
 .frontend/
 
 # custom
+.claude/
 CLAUDE.md
 claude_project.md
 PROJECT_REQUIREMENTS.md
@@ -28,6 +29,10 @@ DESIGN_OVERVIEW.md
 DESIGN.md
 refactory.md
 DESIGN-copy.md
+todo.md
+feat-2315.md
+*.txt
+*.json
 *.jsonl
 example.dart
 install.sh
@@ -58,6 +63,13 @@ lib/firebase_options.dart
 *secret*.json
 *secrets*.json
 *.local.json
+native/target
+native/logs
+sync_refactory.md
+linux-fuse.md
+tools/*
+*.diff
+android/app/src/main/jniLibs/*
 
 # The .vscode folder contains launch configuration and tasks you configure in
 # VS Code which you may wish to be included in version control, so this line

README.md

@@ -1,3 +1,200 @@
 # app
 
-🚀 基于 Flutter 的 公云存储 官方客户端，提供移动端/PC便捷管理体验
+[![Flutter](https://img.shields.io/badge/Flutter-3.41.6-blue?logo=flutter)](https://flutter.dev)
+[![Dart](https://img.shields.io/badge/Dart-3.11.4-blue?logo=dart)](https://dart.dev)
+[![License: AGPL v3](https://img.shields.io/badge/License-AGPL%20v3-blue.svg)](https://www.gnu.org/licenses/agpl-3.0)
+
+> 🚀 基于 Flutter 的 公云存储 官方客户端，提供移动端/PC便捷管理体验
+
+---
+
+## 📖 项目简介
+
+功能丰富的云存储客户端，支持文件上传、下载、管理和分享。针对 公云存储 API 进行了基本完整适配和优化。
+
+### ✨ 特性亮点
+
+- 🎯 现支持的功能基本完整适配 公云存储 API
+- 📱 跨平台支持（Android / Linux / Windows / Web）
+- 🎨 现代化 Material Design 3 界面
+- ⚡ 支持断点续传和下载进度监听
+- 🔐 安全的 Token 认证机制
+
+---
+
+## 🛠️ 技术栈
+
+| 组件 | 版本 |
+|------|------|
+| Flutter | 3.41.6 |
+| Dart | 3.11.4 |
+| 后端 API | 公云存储 |
+
+**开发环境详情：**
+
+```
+Debia
+Flutter 3.41.6 • channel stable
+Framework • revision db50e20168 • 2026-03-25
+Dart 3.11.4 • DevTools 2.54.2
+```
+
+**构建环境详情：**
+
+```
+Android: compileAPI: 36, targetAPI: 36, miniAPI: 34
+Windows: 11
+Linux: Debian 12
+```
+
+---
+
+## 📋 功能状态
+
+### ✅ 基础功能
+
+| 功能模块   | 状态 | 说明                                     |
+|--------|------|----------------------------------------|
+| 用户登录   | ✅ | 自定义服务器, Token 认证、持久化                   |
+| 文件列表   | ✅ | 列表/网格双视图                               |
+| 刷新列表   | ✅ | 增量更新                                   |
+| 全屏手势   | ✅ | 右侧左滑返回上级目录, 根目录提示退出                    |
+| 文件下载   | ✅ | 原生/浏览器双实现、进度监听、断点续传、后台下载               |
+| 文件上传   | ✅ | 进度展示、分片上传<服务端需要开启> Windows/Linux支持拖拽上传 |
+| 删除文件   | ✅ | 删除文件                                   |
+| 重命名    | ✅ | 重命名文件                                  |
+| 移动复制   | ✅ | 移动/复制文件, 添加文件夹选择器对话框                   |
+| 我的分享   | ✅ | 完整的分享功能, 包括创建,删除,管理列表,编辑等              |
+| 找回密码   | ✅ | 使用邮箱找回密码 (依赖控制台STMP可用性)                |
+| 用户注册   | ✅ | 使用邮箱注册新用户 (依赖控制台允许注册新用户)               |
+| 回收站    | ✅ | 文件恢复/彻底删除                              |
+| WebDav | ✅ | 增删改查(硬编码查50条)                          |
+| 文件搜索   | ✅ | 全局搜索功能, 点击跳转到对应目录                      |
+| 设置页面   | ✅ | 增加多个实用的设置项                             |
+| 离线下载   | ✅ | 离线下载(依赖服务端aria2可用)                     |
+| 缩略图    | ✅ | 网格布局缩略图懒加载支持                           |
+
+>   文件下载
+>   原生/浏览器双实现原因:
+>
+>   >   ~~选型使用了 `flutter_downloader` 来实现Android后台下载, 避免切换后台下载异常, 但这玩意儿不支持跨平台, 所以PC端就实现了获取文件url地址在浏览器打开进行下载; 正常应该选用 `background_downloader`~~
+>
+>   文件上传
+>
+>   >   看后端接口文档, 必须要按分片顺序上传, 看着是不支持多分片并发上传, 差点意思, 效率不高.
+
+------
+
+### ✅  设置页面
+
+| 功能模块 | 状态 | 说明                                  |
+|------|----|-------------------------------------|
+| 个人资料 | ✅  | 修改昵称和头像                             |
+| 安全设置 | ✅  | 修改密码/2FA等                           |
+| 快捷入口 | ✅  | 概览页快捷入口设置, 默认4个, 支持新增修改和调整顺序        |
+| 文件偏好 | ✅  | 历史版本开关, 视图同步, 个人主页分享链接可见性           |
+| 应用设置 | ✅  | 深色模式/主题/语言/gravatar镜像/下载设置/缓存/日志管理等 |
+| 关于   | ✅  | APP信息                               |
+
+-----
+
+### ✅ 预览模块
+
+| 功能模块 | 状态 | 说明 |
+|----------|------|------|
+| 图片预览 | ✅ | 全平台支持, win/linux 支持CTRL+鼠标滚轮缩放,双击恢复,平滑动画 |
+| PDF预览 | ✅ | 全平台支持, 支持缩放, 选中文字复制等 |
+| 音频预览 | ✅ | 全平台支持流式播放, 算好看的播放器UI, 进度条, 暂停, 快进/退10秒 |
+| 视频预览 | ✅ | 全平台支持流式播放, 暂停, 调整音量, 全屏, 增加倍速支持 |
+| 文本预览 | ✅ | 全平台支持, 189中语言代码高亮, SourceCodePro等宽字体, 一键复制 |
+| MD预览 | ✅ | 全平台支持, 类github风格, TOC, 暗色模式支持.(dark缺陷) |
+
+> 音视频预览库底层是 mpv 提供编解码能力, 理论上 mpv 支持的格式均支持, 具体没有实测;
+>
+> (待改进)视频预览进度条内嵌: MaterialVideoControlsTheme ->  MaterialVideoControls
+>
+> 文本预览现在是一次性渲染, 大文件会有性能问题, 如果借用listview来优化, 会丢失代码高亮, 暂时保持现阶段的情况, 另外应该也没啥大文本文件预览的场景
+
+### 🚧 开发中
+
+| 功能模块          | 进度 | 说明                          |
+|---------------|------|-----------------------------|
+| ~~文件预览~~      | ✅ | 图片/文档/视频等预览(核心功能基本完成)       |
+| ~~设置页面~~      | ✅ | 用户信息, 2FA等                  |
+| ~~桌面端托盘~~     | ✅ | 桌面端托盘                       |
+| ~~桌面端原生下载~~   | ✅ | 统一为 `background_downloader` |
+| ~~我的页面~~      | ✅ | 我的页面                        |
+| ~~批量C&M~~     | ✅ | 批量移动/复制                     |
+| ~~桌面端支持拖拽上传~~ | ✅ | windows/linux 支持拖拽上传到当前文件夹  |
+
+### 📝 待优化
+
+- [x] SnackBar 样式美化 (`oktoast`)
+- [x] 错误/提示优化 (重构所有SnackBar为okToast)
+- [x] 重构所有开发过程中的`debugPrint`为 `logger` 库
+- [x] Windows/Linux平台使用`background_downloader`替代`flutter_downloader`下载, 增加下载速度显示
+- [x] ListView 似乎还是完整重绘, 上传插值似乎也还是在完整重绘
+
+
+### 🚧 待重构
+| 功能模块                    | 进度 | 说明                                                                        |
+|-------------------------|----|---------------------------------------------------------------------------|
+| UI                      | ✅  | windows/linux/Android phone&pad 完整ui重构                                    |
+| `background_downloader` | ✅  | flutter_downloader ->  background_downloader 全平台统一下载管理, 支持后台, 断点续传, 自动恢复等 |
+| 搜索                      | ✅  | 移除旧搜索, 实现新版本支持实时搜索, 搜索历史, 搜索防抖; 优化搜索结果点击跳转                                |
+| 拖拽上传                    | ✅  | Windows/Linux支持拖拽上传                                                       |
+
+---
+
+## 🚀 快速开始
+
+### 环境要求
+
+- Flutter SDK >= 3.41.6
+- Dart SDK >= 3.11.4
+- 公云存储 后端服务
+
+### 安装依赖
+
+```bash
+flutter pub get
+```
+
+### 运行项目
+
+```bash
+flutter run  # pdf 和 音视频会再构建过程中下载github上的依赖,自行解决网络问题
+```
+
+### 构建发布
+
+```bash
+# Android
+flutter build apk --release
+# Linux
+flutter build -d linux --release
+# windows
+flutter build -d windows --release
+```
+
+---
+
+## 📬 联系方式
+
+- 📧 问题反馈：提交 Issue
+- 💬 讨论交流：无
+
+---
+
+## ⚖️ 开源协议 (License)
+
+本项目采用 **AGPL-3.0 (GNU Affero General Public License v3.0)** 协议开源。
+
+### 核心约束：
+1. **传染性**：如果你修改了本项目代码并重新发布，你的项目也必须以 AGPL-3.0 协议开源。
+2. **云端公开声明**：如果你在服务器/云真机等上运行本项目并向公众提供网络服务（网盘服务），你必须向用户公开你所使用的源代码（包括任何修改）。
+3. **禁止闭源商业化**：未经授权，禁止将本项目代码闭源后作为商业产品销售。
+
+详情请参阅项目根目录下的 [LICENSE](./LICENSE) 文件。
+
+---

android/app/build.gradle.kts

@@ -30,6 +30,14 @@ if (keystorePropertiesFile.exists()) {
     keystoreProperties.load(FileInputStream(keystorePropertiesFile))
 }
 
+val releaseStoreFile = keystoreProperties.getProperty("storeFile")?.let { rootProject.file(it) }
+val hasReleaseSigning = listOf(
+    "keyAlias",
+    "keyPassword",
+    "storePassword",
+).all { !keystoreProperties.getProperty(it).isNullOrBlank() } &&
+    releaseStoreFile?.exists() == true
+
 android {
     namespace = "com.limo.cloudreve4_flutter"
     compileSdk = getLocalProperty("flutter.compileSdkVersion", 36)
@@ -38,10 +46,12 @@ android {
     // 2. 配置签名选项
     signingConfigs {
         create("release") {
-            keyAlias = keystoreProperties["keyAlias"] as String?
-            keyPassword = keystoreProperties["keyPassword"] as String?
-            storeFile = keystoreProperties["storeFile"]?.let { file(it) }
-            storePassword = keystoreProperties["storePassword"] as String?
+            if (hasReleaseSigning) {
+                keyAlias = keystoreProperties.getProperty("keyAlias")
+                keyPassword = keystoreProperties.getProperty("keyPassword")
+                storeFile = releaseStoreFile
+                storePassword = keystoreProperties.getProperty("storePassword")
+            }
         }
     }
 
@@ -54,15 +64,35 @@ android {
         jvmTarget = JavaVersion.VERSION_17.toString()
     }
 
+    sourceSets {
+        getByName("main") {
+            jniLibs.srcDirs("src/main/jniLibs")
+        }
+    }
+
     defaultConfig {
-        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId = "com.limo.cloudreve4_flutter"
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         // You can update the following values to match your application needs.
         // For more information, see: https://flutter.dev/to/review-gradle-config.
         minSdk = getLocalProperty("flutter.minSdkVersion", 24)
         targetSdk = getLocalProperty("flutter.targetSdkVersion", 35)
         versionCode = flutter.versionCode
         versionName = flutter.versionName
+
+        ndk {
+            // abiFilters.addAll(listOf("arm64-v8a", "armeabi-v7a"))
+        }
+    }
+
+    splits {
+        abi {
+            isEnable = true
+            reset()
+            include("armeabi-v7a", "arm64-v8a", "x86_64")
+            // include("armeabi-v7a", "arm64-v8a")
+            isUniversalApk = true
+        }
     }
 
     packaging {
@@ -76,7 +106,7 @@ android {
     buildTypes {
         release {
             // 1. 将原来的 getByName("debug") 替换为 getByName("release")
-            signingConfig = signingConfigs.getByName("release")
+            signingConfig = signingConfigs.getByName(if (hasReleaseSigning) "release" else "debug")
             
             // 2. 建议同时开启混淆，这能大幅减小网盘应用的体积并保护代码
             isMinifyEnabled = true

android/gradle.properties

@@ -1,2 +1,6 @@
-org.gradle.jvmargs=-Xmx8G -XX:MaxMetaspaceSize=4G -XX:ReservedCodeCacheSize=512m -XX:+HeapDumpOnOutOfMemoryError
+org.gradle.jvmargs=-Xmx3072m -XX:MaxMetaspaceSize=1G -XX:ReservedCodeCacheSize=256m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
+org.gradle.workers.max=2
+org.gradle.vfs.watch=false
+kotlin.compiler.execution.strategy=in-process
+kotlin.incremental=false
 android.useAndroidX=true

lib/core/constants/sort_options.dart

@@ -0,0 +1,70 @@
+/// 排序字段
+enum SortField {
+  name('名称', 'name'),
+  size('大小', 'size'),
+  updatedAt('修改时间', 'updated_at'),
+  createdAt('创建时间', 'created_at');
+
+  final String label;
+  final String apiKey;
+  const SortField(this.label, this.apiKey);
+}
+
+/// 排序方向
+enum SortDirection {
+  asc('升序', 'asc'),
+  desc('降序', 'desc');
+
+  final String label;
+  final String apiKey;
+  const SortDirection(this.label, this.apiKey);
+}
+
+/// 排序选项
+class SortOption {
+  final SortField field;
+  final SortDirection direction;
+
+  const SortOption(this.field, this.direction);
+
+  static const default_ = SortOption(SortField.name, SortDirection.asc);
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is SortOption &&
+          field == other.field &&
+          direction == other.direction;
+
+  @override
+  int get hashCode => Object.hash(field, direction);
+
+  /// 持久化字符串，格式: "name_asc"
+  String toKey() => '${field.apiKey}_${direction.apiKey}';
+
+  /// 从持久化字符串恢复
+  static SortOption fromKey(String? key) {
+    if (key == null) return default_;
+    final parts = key.split('_');
+    if (parts.length != 2) return default_;
+    final field = SortField.values
+        .where((f) => f.apiKey == parts[0])
+        .firstOrNull;
+    final dir = SortDirection.values
+        .where((d) => d.apiKey == parts[1])
+        .firstOrNull;
+    if (field == null || dir == null) return default_;
+    return SortOption(field, dir);
+  }
+
+  /// 生成菜单项显示文本
+  String get menuLabel {
+    final dirLabel = switch (field) {
+      SortField.name => direction == SortDirection.asc ? 'A→Z' : 'Z→A',
+      SortField.size => direction == SortDirection.asc ? '小→大' : '大→小',
+      SortField.updatedAt => direction == SortDirection.asc ? '旧→新' : '新→旧',
+      SortField.createdAt => direction == SortDirection.asc ? '旧→新' : '新→旧',
+    };
+    return '${field.label} $dirLabel';
+  }
+}

lib/core/constants/storage_keys.dart

@@ -27,4 +27,24 @@ class StorageKeys {
 
   // 搜索历史
   static const String searchHistory = 'search_history';
+
+  // 同步相关
+  static const String syncConfig = 'sync_config';
+  static const String syncState = 'sync_state';
+  static const String syncCumStats = 'sync_cum_stats';
+  static const String clientId = 'client_id';
+
+  // 文件排序
+  static const String fileSortOption = 'file_sort_option';
+
+  // 日志级别
+  static const String logLevel = 'app_log_level';
+
+  // 公告
+  static const String siteAnnouncementDismissedFingerprint =
+      'site_announcement_dismissed_fingerprint';
+
+  // 版本更新
+  static const String updatePromptSkipUntil = 'update_prompt_skip_until';
+  static const String updatePromptSkipVersion = 'update_prompt_skip_version';
 }

lib/core/constants/sync_defaults.dart

@@ -0,0 +1,54 @@
+import 'dart:io';
+import 'package:external_path/external_path.dart';
+
+class SyncDefaults {
+  SyncDefaults._();
+
+  /// 默认同步目录（同步版本，Android 返回空串，需用 getDefaultLocalRoot 异步获取）
+  static String defaultLocalRoot() {
+    if (Platform.isWindows) {
+      return '${Platform.environment['USERPROFILE']}\\Documents\\Cloudreve4';
+    } else if (Platform.isLinux) {
+      final xdgDownload =
+          Platform.environment['XDG_DOWNLOAD_DIR'] ??
+          ("${Platform.environment['HOME'] ?? ''}/Downloads");
+      return '$xdgDownload/Cloudreve4';
+    } else if (Platform.isAndroid) {
+      return '';
+    }
+    return '';
+  }
+
+  /// 默认同步目录（异步版本，Android 通过 ExternalPath 获取公共目录）
+  static Future<String> getDefaultLocalRoot() async {
+    if (Platform.isAndroid) {
+      return getDefaultAndroidLocalRoot();
+    }
+    return defaultLocalRoot();
+  }
+
+  static const String defaultRemoteRoot = 'cloudreve://my';
+  static const String defaultSyncMode = 'full';
+  static const String defaultConflictStrategy = 'keep_both';
+  static const int defaultMaxConcurrentTransfers = 3;
+  static const int defaultBandwidthLimitKbps = 0;
+  static const int defaultMaxWorkers = 0; // 0 = CPU 核心数
+  static const String defaultLogLevel = 'info';
+
+  // ===== Android 相册同步专用 =====
+  static String get defaultAndroidLocalRoot {
+    // runtime 获取 DCIM 公共目录，再拼接 /Camera
+    // ExternalPath 无法 const，使用 getter 延迟求值
+    throw UnsupportedError('Use getDefaultAndroidLocalRoot() instead');
+  }
+
+  static Future<String> getDefaultAndroidLocalRoot() async {
+    final dcim = await ExternalPath.getExternalStoragePublicDirectory(
+      ExternalPath.DIRECTORY_DCIM,
+    );
+    return '$dcim/Camera';
+  }
+
+  static const String defaultAndroidRemoteRoot = 'cloudreve://my/DCIM/Camera';
+  static const String defaultAndroidSyncMode = 'album_upload';
+}

lib/core/utils/app_logger.dart

@@ -10,6 +10,10 @@ class AppLogger {
   static Logger? _logger;
   static File? _logFile;
 
+  /// 当前日志级别（默认 info，debug 模式下也是 info 避免刷屏）
+  static Level _level = Level.info;
+  static Level get level => _level;
+
   /// 初始化日志，必须在 main 中 await
   static Future<void> init() async {
     if (_logger != null) return;
@@ -22,6 +26,10 @@ class AppLogger {
     }
     _logFile = File(p.join(logDir.path, 'log.txt'));
 
+    _createLogger();
+  }
+
+  static void _createLogger() {
     // 2. 配置多路输出：同时输出到控制台和文件
     _logger = Logger(
       printer: PrettyPrinter(
@@ -38,10 +46,16 @@ class AppLogger {
           file: _logFile!,
         ),
       ]),
-      filter: ProductionFilter(),
+      filter: _LevelFilter(_level),
     );
   }
 
+  /// 运行时切换日志级别
+  static void setLevel(Level level) {
+    _level = level;
+    _createLogger();
+  }
+
   // 使用 getter 确保 logger 已初始化，防止空指针
   static Logger get _instance {
     _logger ??= Logger(
@@ -67,6 +81,9 @@ class AppLogger {
   /// Error 级别日志
   static void e(String message) =>  _instance.e(message);
 
+  /// Trace 级别日志（高频轮询/查询使用，仅 trace 级别可见）
+  static void t(String message) => _instance.t(message);
+
   /// Debug 级别日志（支持格式化）
   static void df(String message, List<Object> args) =>  _instance.d(message, error: args);
 
@@ -132,6 +149,17 @@ class AppLogger {
   }
 }
 
+/// 自定义级别过滤器：低于设定级别的日志被过滤
+class _LevelFilter extends LogFilter {
+  final Level minLevel;
+  _LevelFilter(this.minLevel);
+
+  @override
+  bool shouldLog(LogEvent event) {
+    return event.level.index >= minLevel.index;
+  }
+}
+
 /// 定义一个简单的自定义 FileOutput，防止 Logger 自带版本不支持追加
 class CustomFileOutput extends LogOutput {
   final File file;

lib/core/utils/file_utils.dart

@@ -1,90 +1,192 @@
-/// 文件工具类
 class FileUtils {
-  /// 将路径转换为 Cloudreve URI 格式
-  /// "/" → "cloudreve://my", "/subfolder" → "cloudreve://my/subfolder"
+  static String safeDecodePathSegment(String value, {int maxPasses = 5}) {
+    var decoded = value;
+
+    for (var i = 0; i < maxPasses; i++) {
+      try {
+        final next = Uri.decodeComponent(decoded);
+        if (next == decoded) break;
+        decoded = next;
+      } on FormatException {
+        break;
+      } on ArgumentError {
+        break;
+      }
+    }
+
+    return decoded;
+  }
+
+  static String decodePathForDisplay(String path) {
+    return path
+        .split('/')
+        .map((segment) => safeDecodePathSegment(segment))
+        .join('/');
+  }
+
   static String toCloudreveUri(String path) {
     if (path.startsWith('cloudreve://')) return path;
     if (path == '/' || path.isEmpty) return 'cloudreve://my';
     final cleanPath = path.startsWith('/') ? path.substring(1) : path;
     return 'cloudreve://my/$cleanPath';
   }
-  /// 获取文件扩展名
+
+  static String toCloudreveUriWithQuery(
+    String path,
+    Map<String, String> queryParameters,
+  ) {
+    final uri = Uri.parse(toCloudreveUri(path));
+    return uri.replace(queryParameters: queryParameters).toString();
+  }
+
   static String getFileExtension(String fileName) {
     final dotIndex = fileName.lastIndexOf('.');
     if (dotIndex == -1) return '';
     return fileName.substring(dotIndex + 1).toLowerCase();
   }
 
-  /// 判断是否为图片文件
   static bool isImageFile(String fileName) {
     const imageExtensions = [
-      'jpg', 'jpeg', 'png', 'gif', 'webp', 'bmp', 'svg', 'heic'
+      'jpg',
+      'jpeg',
+      'png',
+      'gif',
+      'webp',
+      'bmp',
+      'svg',
+      'heic',
+      'heif',
+      'avif',
+      'tif',
+      'tiff',
     ];
     return imageExtensions.contains(getFileExtension(fileName));
   }
 
-  /// 判断是否为视频文件
+  static bool isFlutterRenderableImageFile(String fileName) {
+    const renderableImageExtensions = [
+      'jpg',
+      'jpeg',
+      'png',
+      'gif',
+      'webp',
+      'bmp',
+    ];
+    return renderableImageExtensions.contains(getFileExtension(fileName));
+  }
+
   static bool isVideoFile(String fileName) {
     const videoExtensions = [
-      'mp4', 'webm', 'mkv', 'avi', 'mov', 'flv', 'wmv'
+      'mp4',
+      'webm',
+      'mkv',
+      'avi',
+      'mov',
+      'flv',
+      'wmv',
+      'm4v',
+      'mpg',
+      'mpeg',
+      '3gp',
+      'ts',
+      'm2ts',
     ];
     return videoExtensions.contains(getFileExtension(fileName));
   }
 
-  /// 判断是否为音频文件
   static bool isAudioFile(String fileName) {
-    const audioExtensions = [
-      'mp3', 'wav', 'ogg', 'flac', 'aac', 'm4a'
-    ];
+    const audioExtensions = ['mp3', 'wav', 'ogg', 'flac', 'aac', 'm4a'];
     return audioExtensions.contains(getFileExtension(fileName));
   }
 
-  /// 判断是否为PDF文件
+  static bool isPsdFile(String fileName) {
+    const psdExtensions = ['psd', 'psb'];
+    return psdExtensions.contains(getFileExtension(fileName));
+  }
+
+  static bool isThumbnailableFile(String fileName) {
+    final ext = getFileExtension(fileName);
+    if (ext.isEmpty || ext == 'svg') return false;
+    return isImageFile(fileName) || isVideoFile(fileName) || isPsdFile(fileName);
+  }
+
   static bool isPdfFile(String fileName) {
     return getFileExtension(fileName) == 'pdf';
   }
 
-  /// 判断是否为文本文件
   static bool isTextFile(String fileName) {
     const textExtensions = [
-      'txt', 'md', 'json', 'xml', 'yaml', 'yml', 'ini', 'conf'
+      'txt',
+      'md',
+      'json',
+      'xml',
+      'yaml',
+      'yml',
+      'ini',
+      'conf',
     ];
     return textExtensions.contains(getFileExtension(fileName));
   }
 
-  /// 判断是否为代码文件
   static bool isCodeFile(String fileName) {
     const codeExtensions = [
-      'js', 'ts', 'tsx', 'jsx', 'dart', 'java', 'py', 'c', 'cpp',
-      'h', 'hpp', 'cs', 'php', 'rb', 'go', 'rs', 'swift', 'kt',
-      'html', 'css', 'scss', 'less', 'sql', 'sh', 'bat'
+      'js',
+      'ts',
+      'tsx',
+      'jsx',
+      'dart',
+      'java',
+      'py',
+      'c',
+      'cpp',
+      'h',
+      'hpp',
+      'cs',
+      'php',
+      'rb',
+      'go',
+      'rs',
+      'swift',
+      'kt',
+      'html',
+      'css',
+      'scss',
+      'less',
+      'sql',
+      'sh',
+      'bat',
     ];
     return codeExtensions.contains(getFileExtension(fileName));
   }
 
-  /// 判断是否为压缩文件
   static bool isArchiveFile(String fileName) {
-    const archiveExtensions = [
-      'zip', 'rar', '7z', 'tar', 'gz', 'bz2'
-    ];
+    const archiveExtensions = ['zip', 'rar', '7z', 'tar', 'gz', 'bz2'];
     return archiveExtensions.contains(getFileExtension(fileName));
   }
 
-  /// 判断是否为文档文件
   static bool isDocumentFile(String fileName) {
     const docExtensions = [
-      'doc', 'docx', 'xls', 'xlsx', 'ppt', 'pptx', 'odt', 'ods', 'odp'
+      'doc',
+      'docx',
+      'xls',
+      'xlsx',
+      'ppt',
+      'pptx',
+      'odt',
+      'ods',
+      'odp',
     ];
     return docExtensions.contains(getFileExtension(fileName));
   }
 
-  /// 判断是否可预览
   static bool isPreviewable(String fileName) {
-    return isImageFile(fileName) || isVideoFile(fileName) ||
-           isPdfFile(fileName) || isTextFile(fileName) || isCodeFile(fileName);
+    return isImageFile(fileName) ||
+        isVideoFile(fileName) ||
+        isPdfFile(fileName) ||
+        isTextFile(fileName) ||
+        isCodeFile(fileName);
   }
 
-  /// 获取MIME类型
   static String getMimeType(String fileName) {
     final ext = getFileExtension(fileName);
     final mimeTypes = {
@@ -94,13 +196,33 @@ class FileUtils {
       'gif': 'image/gif',
       'webp': 'image/webp',
       'svg': 'image/svg+xml',
+      'bmp': 'image/bmp',
+      'heic': 'image/heic',
+      'heif': 'image/heif',
+      'avif': 'image/avif',
+      'tif': 'image/tiff',
+      'tiff': 'image/tiff',
+      'psd': 'image/vnd.adobe.photoshop',
+      'psb': 'image/vnd.adobe.photoshop',
       'mp4': 'video/mp4',
       'webm': 'video/webm',
       'mkv': 'video/x-matroska',
       'avi': 'video/x-msvideo',
+      'mov': 'video/quicktime',
+      'flv': 'video/x-flv',
+      'wmv': 'video/x-ms-wmv',
+      'm4v': 'video/x-m4v',
+      'mpg': 'video/mpeg',
+      'mpeg': 'video/mpeg',
+      '3gp': 'video/3gpp',
+      'ts': 'video/mp2t',
+      'm2ts': 'video/mp2t',
       'mp3': 'audio/mpeg',
       'wav': 'audio/wav',
       'ogg': 'audio/ogg',
+      'flac': 'audio/flac',
+      'aac': 'audio/aac',
+      'm4a': 'audio/mp4',
       'pdf': 'application/pdf',
       'txt': 'text/plain',
       'json': 'application/json',
@@ -112,7 +234,6 @@ class FileUtils {
     return mimeTypes[ext] ?? 'application/octet-stream';
   }
 
-  /// 获取文件图标
   static String getFileIcon(String fileName) {
     if (isImageFile(fileName)) return 'assets/icons/image.svg';
     if (isVideoFile(fileName)) return 'assets/icons/video.svg';

lib/core/utils/win_env.dart

@@ -0,0 +1,26 @@
+import 'dart:ffi';
+import 'dart:io';
+
+import 'package:ffi/ffi.dart';
+
+/// 通过 Win32 SetEnvironmentVariableW 设置/清除进程环境变量
+/// 仅 Windows 有效，其他平台直接返回 false
+bool winSetEnvVar(String name, String? value) {
+  if (!Platform.isWindows) return false;
+
+  final dylib = DynamicLibrary.open('kernel32.dll');
+  final fn = dylib.lookupFunction<
+      Int32 Function(Pointer<Utf16>, Pointer<Utf16>),
+      int Function(Pointer<Utf16>, Pointer<Utf16>)>(
+    'SetEnvironmentVariableW',
+  );
+
+  final namePtr = name.toNativeUtf16();
+  final valuePtr = value != null ? value.toNativeUtf16() : nullptr;
+  try {
+    return fn(namePtr, valuePtr) != 0;
+  } finally {
+    calloc.free(namePtr);
+    if (value != null) calloc.free(valuePtr);
+  }
+}

lib/data/models/app_update_model.dart

@@ -0,0 +1,19 @@
+class AppUpdateInfo {
+  final String version;
+  final String title;
+  final String? description;
+  final Uri pageUrl;
+  final Uri? downloadUrl;
+  final String? fileName;
+  final DateTime? publishedAt;
+
+  const AppUpdateInfo({
+    required this.version,
+    required this.title,
+    required this.pageUrl,
+    this.description,
+    this.downloadUrl,
+    this.fileName,
+    this.publishedAt,
+  });
+}

lib/data/models/sync_config_model.dart

@@ -0,0 +1,114 @@
+import '../../src/rust/api/ffi_types.dart' as ffi;
+
+class SyncConfigModel {
+  final String baseUrl;
+  final String accessToken;
+  final String refreshToken;
+  final String localRoot;
+  final String remoteRoot;
+  final String syncMode;
+  final String conflictStrategy;
+  final String wcfDeleteMode;
+  final int maxConcurrentTransfers;
+  final int bandwidthLimitKbps;
+  final List<String> excludedPaths;
+  final int maxWorkers;
+  final String dataDir;
+  final String clientId;
+  final String logLevel;
+
+  const SyncConfigModel({
+    required this.baseUrl,
+    required this.accessToken,
+    required this.refreshToken,
+    required this.localRoot,
+    required this.dataDir,
+    required this.clientId,
+    this.remoteRoot = 'cloudreve://my',
+    this.syncMode = 'full',
+    this.conflictStrategy = 'keep_both',
+    this.wcfDeleteMode = 'wcf_delete_local_only',
+    this.maxConcurrentTransfers = 3,
+    this.bandwidthLimitKbps = 0,
+    this.excludedPaths = const [],
+    this.maxWorkers = 0,
+    this.logLevel = 'info',
+  });
+
+  SyncConfigModel copyWith({
+    String? baseUrl,
+    String? accessToken,
+    String? refreshToken,
+    String? localRoot,
+    String? remoteRoot,
+    String? syncMode,
+    String? conflictStrategy,
+    String? wcfDeleteMode,
+    int? maxConcurrentTransfers,
+    int? bandwidthLimitKbps,
+    List<String>? excludedPaths,
+    int? maxWorkers,
+    String? dataDir,
+    String? clientId,
+    String? logLevel,
+  }) {
+    return SyncConfigModel(
+      baseUrl: baseUrl ?? this.baseUrl,
+      accessToken: accessToken ?? this.accessToken,
+      refreshToken: refreshToken ?? this.refreshToken,
+      localRoot: localRoot ?? this.localRoot,
+      remoteRoot: remoteRoot ?? this.remoteRoot,
+      syncMode: syncMode ?? this.syncMode,
+      conflictStrategy: conflictStrategy ?? this.conflictStrategy,
+      wcfDeleteMode: wcfDeleteMode ?? this.wcfDeleteMode,
+      maxConcurrentTransfers:
+          maxConcurrentTransfers ?? this.maxConcurrentTransfers,
+      bandwidthLimitKbps: bandwidthLimitKbps ?? this.bandwidthLimitKbps,
+      excludedPaths: excludedPaths ?? this.excludedPaths,
+      maxWorkers: maxWorkers ?? this.maxWorkers,
+      dataDir: dataDir ?? this.dataDir,
+      clientId: clientId ?? this.clientId,
+      logLevel: logLevel ?? this.logLevel,
+    );
+  }
+
+  ffi.SyncConfigFfi toFfi() {
+    return ffi.SyncConfigFfi(
+      baseUrl: baseUrl,
+      accessToken: accessToken,
+      refreshToken: refreshToken,
+      localRoot: localRoot,
+      remoteRoot: remoteRoot,
+      syncMode: syncMode,
+      conflictStrategy: conflictStrategy,
+      wcfDeleteMode: wcfDeleteMode,
+      maxConcurrentTransfers: maxConcurrentTransfers,
+      bandwidthLimitKbps: BigInt.from(bandwidthLimitKbps),
+      excludedPaths: excludedPaths,
+      maxWorkers: maxWorkers,
+      dataDir: dataDir,
+      clientId: clientId,
+      logLevel: logLevel,
+    );
+  }
+
+  static SyncConfigModel fromFfi(ffi.SyncConfigFfi ffi) {
+    return SyncConfigModel(
+      baseUrl: ffi.baseUrl,
+      accessToken: ffi.accessToken,
+      refreshToken: ffi.refreshToken,
+      localRoot: ffi.localRoot,
+      remoteRoot: ffi.remoteRoot,
+      syncMode: ffi.syncMode,
+      conflictStrategy: ffi.conflictStrategy,
+      wcfDeleteMode: ffi.wcfDeleteMode,
+      maxConcurrentTransfers: ffi.maxConcurrentTransfers,
+      bandwidthLimitKbps: ffi.bandwidthLimitKbps.toInt(),
+      excludedPaths: ffi.excludedPaths,
+      maxWorkers: ffi.maxWorkers,
+      dataDir: ffi.dataDir,
+      clientId: ffi.clientId,
+      logLevel: ffi.logLevel,
+    );
+  }
+}

lib/data/models/sync_event_model.dart

@@ -0,0 +1,172 @@
+import '../../src/rust/api/ffi_types.dart' as ffi;
+
+sealed class SyncEventModel {}
+
+class SyncStateChanged extends SyncEventModel {
+  final String newState;
+  SyncStateChanged(this.newState);
+}
+
+class SyncProgress extends SyncEventModel {
+  final int synced;
+  final int total;
+  final String currentFile;
+  SyncProgress(this.synced, this.total, this.currentFile);
+}
+
+class SyncFileUploaded extends SyncEventModel {
+  final String localPath;
+  final String remoteUri;
+  SyncFileUploaded(this.localPath, this.remoteUri);
+}
+
+class SyncFileDownloaded extends SyncEventModel {
+  final String localPath;
+  final String remoteUri;
+  SyncFileDownloaded(this.localPath, this.remoteUri);
+}
+
+class SyncConflictDetected extends SyncEventModel {
+  final String localPath;
+  final String conflictType;
+  SyncConflictDetected(this.localPath, this.conflictType);
+}
+
+class SyncError extends SyncEventModel {
+  final String message;
+  final bool recoverable;
+  SyncError(this.message, this.recoverable);
+}
+
+class SyncTokenExpired extends SyncEventModel {}
+
+class SyncDiskSpaceWarning extends SyncEventModel {
+  final int availableMb;
+  SyncDiskSpaceWarning(this.availableMb);
+}
+
+class SyncInitialSyncComplete extends SyncEventModel {
+  final SyncSummaryModel summary;
+  SyncInitialSyncComplete(this.summary);
+}
+
+class SyncWorkerCompleted extends SyncEventModel {
+  final String taskId;
+  final int uploaded;
+  final int downloaded;
+  final int renamed;
+  final int moved;
+  final int failed;
+  final int durationMs;
+  SyncWorkerCompleted({
+    required this.taskId,
+    required this.uploaded,
+    required this.downloaded,
+    required this.renamed,
+    required this.moved,
+    required this.failed,
+    required this.durationMs,
+  });
+}
+
+class SyncWorkerFailed extends SyncEventModel {
+  final String taskId;
+  final String message;
+  SyncWorkerFailed({required this.taskId, required this.message});
+}
+
+class SyncTaskItemUpdated extends SyncEventModel {
+  final String taskId;
+  final String relativePath;
+  final String action;
+  final String status;
+  SyncTaskItemUpdated({
+    required this.taskId,
+    required this.relativePath,
+    required this.action,
+    required this.status,
+  });
+}
+
+/// 将 FFI 事件转换为 Dart 模型
+SyncEventModel? syncEventFromFfi(ffi.SyncEventFfi event) {
+  return event.when(
+    stateChanged: (newState) => SyncStateChanged(newState),
+    progress: (synced, total, currentFile) =>
+        SyncProgress(synced.toInt(), total.toInt(), currentFile),
+    fileUploaded: (localPath, remoteUri) =>
+        SyncFileUploaded(localPath, remoteUri),
+    fileDownloaded: (localPath, remoteUri) =>
+        SyncFileDownloaded(localPath, remoteUri),
+    conflictDetected: (localPath, conflictType) =>
+        SyncConflictDetected(localPath, conflictType),
+    error: (message, recoverable) => SyncError(message, recoverable),
+    tokenExpired: () => SyncTokenExpired(),
+    diskSpaceWarning: (availableMb) =>
+        SyncDiskSpaceWarning(availableMb.toInt()),
+    initialSyncComplete: (summary) =>
+        SyncInitialSyncComplete(SyncSummaryModel.fromFfi(summary)),
+    workerStarted: (taskId, trigger, uploadCount, downloadCount) => null,
+    workerCompleted:
+        (taskId, uploaded, downloaded, renamed, moved, failed, durationMs) =>
+            SyncWorkerCompleted(
+              taskId: taskId,
+              uploaded: uploaded,
+              downloaded: downloaded,
+              renamed: renamed,
+              moved: moved,
+              failed: failed,
+              durationMs: durationMs.toInt(),
+            ),
+    workerFailed: (taskId, message) =>
+        SyncWorkerFailed(taskId: taskId, message: message),
+    taskItemUpdated: (taskId, relativePath, action, status) =>
+        SyncTaskItemUpdated(
+          taskId: taskId,
+          relativePath: relativePath,
+          action: action,
+          status: status,
+        ),
+  );
+}
+
+class SyncSummaryModel {
+  final int uploaded;
+  final int downloaded;
+  final int renamed;
+  final int moved;
+  final int conflicts;
+  final int failed;
+  final int skipped;
+  final int deletedLocal;
+  final int deletedRemote;
+  final int durationMs;
+
+  const SyncSummaryModel({
+    this.uploaded = 0,
+    this.downloaded = 0,
+    this.renamed = 0,
+    this.moved = 0,
+    this.conflicts = 0,
+    this.failed = 0,
+    this.skipped = 0,
+    this.deletedLocal = 0,
+    this.deletedRemote = 0,
+    this.durationMs = 0,
+  });
+
+  static SyncSummaryModel fromFfi(ffi.SyncSummaryFfi f) {
+    return SyncSummaryModel(
+      uploaded: f.uploaded,
+      downloaded: f.downloaded,
+      renamed: f.renamed,
+      moved: f.moved,
+      conflicts: f.conflicts,
+      failed: f.failed,
+      skipped: f.skipped,
+      deletedLocal: f.deletedLocal,
+      deletedRemote: f.deletedRemote,
+      durationMs: f.durationMs.toInt(),
+    );
+  }
+}

lib/data/models/sync_status_model.dart

@@ -0,0 +1,48 @@
+import '../../src/rust/api/ffi_types.dart' as ffi;
+
+class SyncStatusModel {
+  final String state;
+  final int syncedFiles;
+  final int totalFiles;
+  final int uploadingCount;
+  final int downloadingCount;
+  final int conflictCount;
+  final int errorCount;
+  final String? lastSyncTime;
+  final String? errorMessage;
+
+  const SyncStatusModel({
+    this.state = 'idle',
+    this.syncedFiles = 0,
+    this.totalFiles = 0,
+    this.uploadingCount = 0,
+    this.downloadingCount = 0,
+    this.conflictCount = 0,
+    this.errorCount = 0,
+    this.lastSyncTime,
+    this.errorMessage,
+  });
+
+  bool get isIdle => state == 'idle';
+  bool get isInitializing => state == 'initializing';
+  bool get isInitialSync => state == 'initialSync';
+  bool get isContinuous => state == 'continuous';
+  bool get isPaused => state == 'paused';
+  bool get isError => state == 'error';
+  bool get isStopped => state == 'stopped';
+  bool get isActive => isInitializing || isInitialSync || isContinuous;
+
+  static SyncStatusModel fromFfi(ffi.SyncStatusFfi f) {
+    return SyncStatusModel(
+      state: f.state,
+      syncedFiles: f.syncedFiles.toInt(),
+      totalFiles: f.totalFiles.toInt(),
+      uploadingCount: f.uploadingCount,
+      downloadingCount: f.downloadingCount,
+      conflictCount: f.conflictCount,
+      errorCount: f.errorCount,
+      lastSyncTime: f.lastSyncTime,
+      errorMessage: f.errorMessage,
+    );
+  }
+}

lib/data/models/sync_task_model.dart

@@ -0,0 +1,96 @@
+class SyncTaskModel {
+  final String id;
+  final String trigger;
+  final int totalCount;
+  final int completedCount;
+  final int failedCount;
+  final String status;
+  final String createdAt;
+  final String updatedAt;
+  final String? finishedAt;
+
+  const SyncTaskModel({
+    required this.id,
+    required this.trigger,
+    required this.totalCount,
+    required this.completedCount,
+    required this.failedCount,
+    required this.status,
+    required this.createdAt,
+    required this.updatedAt,
+    this.finishedAt,
+  });
+
+  String get shortId => id.length > 8 ? id.substring(0, 8) : id;
+
+  String get triggerLabel => switch (trigger) {
+        'initial_sync' => '初始同步',
+        'continuous' => '持续同步',
+        'manual' => '手动同步',
+        _ => trigger,
+      };
+
+  String get statusLabel => switch (status) {
+        'pending' => '等待中',
+        'running' => '执行中',
+        'completed' => '已完成',
+        'failed' => '失败',
+        'cancelled' => '已取消',
+        _ => status,
+      };
+
+  double get progress =>
+      totalCount > 0 ? completedCount / totalCount : 0.0;
+}
+
+class SyncTaskItemModel {
+  final int id;
+  final String taskId;
+  final String relativePath;
+  final String actionType;
+  final String status;
+  final int fileSize;
+  final String? errorMessage;
+  final String createdAt;
+  final String updatedAt;
+
+  const SyncTaskItemModel({
+    required this.id,
+    required this.taskId,
+    required this.relativePath,
+    required this.actionType,
+    required this.status,
+    required this.fileSize,
+    this.errorMessage,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  String get actionLabel => switch (actionType) {
+        'upload' => '上传',
+        'download' => '下载',
+        'delete_local' => '删本地',
+        'delete_remote' => '删远程',
+        'rename' => '重命名',
+        'move' => '移动',
+        'mkdir_remote' => '创建远程目录',
+        'mkdir_local' => '创建本地目录',
+        'conflict_resolve' => '冲突解决',
+        'create_placeholder' => '创建占位符',
+        _ => actionType,
+      };
+
+  String get statusLabel => switch (status) {
+        'pending' => '未开始',
+        'running' => '进行中',
+        'completed' => '已完成',
+        'failed' => '失败',
+        'skipped' => '跳过',
+        _ => status,
+      };
+
+  String get filename {
+    final parts = relativePath.split('/');
+    return parts.isNotEmpty ? parts.last : relativePath;
+  }
+}

lib/main.dart

@@ -2,6 +2,7 @@ import 'dart:convert';
 import 'dart:io';
 import 'dart:ui';
 import 'package:cloudreve4_flutter/core/utils/app_logger.dart';
+import 'package:logger/logger.dart' show Level;
 import 'package:cloudreve4_flutter/presentation/widgets/desktop_title_bar.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -11,6 +12,7 @@ import 'package:media_kit/media_kit.dart';
 import 'package:oktoast/oktoast.dart';
 import 'package:window_manager/window_manager.dart';
 import 'config/app_config.dart';
+import 'core/constants/storage_keys.dart';
 import 'presentation/providers/auth_provider.dart';
 import 'presentation/providers/file_manager_provider.dart';
 import 'presentation/providers/navigation_provider.dart';
@@ -19,9 +21,11 @@ import 'presentation/providers/download_manager_provider.dart';
 import 'presentation/providers/user_setting_provider.dart';
 import 'presentation/providers/admin_provider.dart';
 import 'presentation/providers/quick_access_provider.dart';
+import 'presentation/providers/sync_provider.dart';
 import 'presentation/providers/theme_provider.dart';
 import 'services/upload_service.dart';
 import 'services/api_service.dart';
+import 'services/storage_service.dart';
 import 'services/server_service.dart';
 import 'services/cache_manager_service.dart';
 import 'services/avatar_cache_service.dart';
@@ -29,12 +33,42 @@ import 'core/utils/video_fullscreen.dart';
 import 'services/desktop_service.dart';
 import 'router/app_router.dart';
 import 'presentation/widgets/toast_helper.dart';
+import 'presentation/widgets/update_prompt.dart';
+import 'src/rust/frb_generated.dart' show RustSyncApi;
 
 final RouteObserver<PageRoute> routeObserver = RouteObserver<PageRoute>();
 
+Level _parseLogLevel(String level) {
+  return switch (level) {
+    'error' => Level.error,
+    'warning' => Level.warning,
+    'info' => Level.info,
+    'debug' => Level.debug,
+    'trace' => Level.trace,
+    _ => Level.info,
+  };
+}
+
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
 
+  await AppLogger.init();
+  final savedLevel = await StorageService.instance.getString(
+    StorageKeys.logLevel,
+  );
+  if (savedLevel != null) {
+    final level = _parseLogLevel(savedLevel);
+    AppLogger.setLevel(level);
+  }
+  AppLogger.i("应用启动，日志系统就绪");
+
+  try {
+    await RustSyncApi.init();
+    AppLogger.i("RustSyncApi 初始化成功");
+  } catch (e) {
+    AppLogger.e("RustSyncApi 初始化失败: $e");
+  }
+
   // 捕获 flutter_cache_manager 在 Windows 上删除缓存文件时的文件占用异常
   // 该异常是后台异步抛出的，无法通过 try-catch 拦截，需绑定错误处理器静默忽略
   FlutterError.onError = (details) {
@@ -51,10 +85,6 @@ void main() async {
     return false;
   };
 
-  // 初始化日志
-  await AppLogger.init();
-  AppLogger.i("应用启动，日志系统就绪");
-
   // 桌面端初始化窗口管理和系统托盘
   if (Platform.isWindows || Platform.isLinux) {
     // 实例化 FlutterSingleInstance 获取单实例句柄
@@ -156,6 +186,7 @@ class CloudreveApp extends StatelessWidget {
         ChangeNotifierProvider(create: (_) => UserSettingProvider()),
         ChangeNotifierProvider(create: (_) => AdminProvider()),
         ChangeNotifierProvider(create: (_) => QuickAccessProvider()..load()),
+        ChangeNotifierProvider(create: (_) => SyncProvider()),
       ],
       child: const AppView(),
     );
@@ -215,7 +246,7 @@ class AppView extends StatelessWidget {
             currentWidget = FilterQualityWidget(child: currentWidget);
           }
           // 添加全局错误处理
-          return ErrorHandler(child: currentWidget);
+          return UpdatePrompt(child: ErrorHandler(child: currentWidget));
         },
       ),
     );

lib/presentation/pages/auth/captcha_challenge_page.dart

@@ -1,7 +1,59 @@
 import 'dart:convert';
+import 'dart:io';
 
+import 'package:cloudreve4_flutter/core/utils/app_logger.dart';
+import 'package:cloudreve4_flutter/core/utils/win_env.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
-import 'package:webview_flutter/webview_flutter.dart';
+import 'package:flutter_inappwebview/flutter_inappwebview.dart';
+import 'package:webview_flutter/webview_flutter.dart' as mobile;
+
+// ═════════════════════════════════════════════════════
+//  WebView 代理配置（仅 Windows，无认证）
+// ═════════════════════════════════════════════════════
+
+class CaptchaProxyConfig {
+  final String host;
+  final int port;
+
+  const CaptchaProxyConfig({required this.host, required this.port});
+
+  String get proxyArg => '--proxy-server=http://$host:$port';
+
+  @override
+  String toString() => '$host:$port';
+}
+
+// ═════════════════════════════════════════════════════
+//  WebView2 代理环境变量管理
+// ═════════════════════════════════════════════════════
+
+const _envVarName = 'WEBVIEW2_ADDITIONAL_BROWSER_ARGUMENTS';
+
+/// 为 WebView2 设置代理环境变量（进程级，不影响其他程序）
+void _applyWebView2Proxy(CaptchaProxyConfig? proxy) {
+  if (!Platform.isWindows) return;
+
+  if (proxy != null) {
+    final existing = Platform.environment[_envVarName];
+    final newValue = existing != null && existing.isNotEmpty
+        ? '$existing ${proxy.proxyArg}'
+        : proxy.proxyArg;
+    winSetEnvVar(_envVarName, newValue);
+    AppLogger.i('WebView2 代理环境变量已设置: $newValue');
+  }
+}
+
+/// 清除 WebView2 代理环境变量
+void _clearWebView2Proxy() {
+  if (!Platform.isWindows) return;
+  winSetEnvVar(_envVarName, null);
+  AppLogger.i('WebView2 代理环境变量已清除');
+}
+
+// ═════════════════════════════════════════════════════
+//  CaptchaWebConfig
+// ═════════════════════════════════════════════════════
 
 class CaptchaWebConfig {
   final String type;
@@ -21,12 +73,20 @@ class CaptchaWebConfig {
   const CaptchaWebConfig.recaptchaV2({
     required String siteKey,
     String displayName = 'reCAPTCHA V2',
-  }) : this._(type: 'recaptcha', displayName: displayName, siteKey: siteKey);
+  }) : this._(
+          type: 'recaptcha',
+          displayName: displayName,
+          siteKey: siteKey,
+        );
 
   const CaptchaWebConfig.turnstile({
     required String siteKey,
     String displayName = 'Cloudflare Turnstile',
-  }) : this._(type: 'turnstile', displayName: displayName, siteKey: siteKey);
+  }) : this._(
+          type: 'turnstile',
+          displayName: displayName,
+          siteKey: siteKey,
+        );
 
   const CaptchaWebConfig.cap({
     required String instanceUrl,
@@ -34,22 +94,36 @@ class CaptchaWebConfig {
     String? assetServer,
     String displayName = 'Cap',
   }) : this._(
-         type: 'cap',
-         displayName: displayName,
-         instanceUrl: instanceUrl,
-         siteKey: siteKey,
-         assetServer: assetServer,
-       );
+          type: 'cap',
+          displayName: displayName,
+          instanceUrl: instanceUrl,
+          siteKey: siteKey,
+          assetServer: assetServer,
+        );
 }
 
+// ─── 桌面端判断 ───────────────────────────────────────
+bool get _isDesktop => !kIsWeb && (Platform.isWindows || Platform.isLinux);
+
+// ─── 桌面 User-Agent ──────────────────────────────────
+const _desktopUserAgent =
+    'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 '
+    '(KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.36';
+
+// ═════════════════════════════════════════════════════
+//  CaptchaChallengePage
+// ═════════════════════════════════════════════════════
+
 class CaptchaChallengePage extends StatefulWidget {
   final CaptchaWebConfig config;
   final String baseUrl;
+  final CaptchaProxyConfig? proxyConfig;
 
   const CaptchaChallengePage({
     super.key,
     required this.config,
     required this.baseUrl,
+    this.proxyConfig,
   });
 
   @override
@@ -57,61 +131,98 @@ class CaptchaChallengePage extends StatefulWidget {
 }
 
 class _CaptchaChallengePageState extends State<CaptchaChallengePage> {
-  late final WebViewController _controller;
+  // ── 移动端 ──
+  mobile.WebViewController? _mobileController;
+
+  // ── 桌面端 ──
+  InAppWebViewController? _desktopController;
+  Key _desktopKey = UniqueKey();
+
+  // ── 共享状态 ──
   bool _isLoading = true;
   int _progress = 0;
   String? _errorMessage;
   String? _statusText;
+  bool _disposed = false;
+
+  // ── 是否设置了代理环境变量（用于清理时判断）──
+  bool _proxyEnvSet = false;
+
+  // ── HTML ──
+  late String _currentHtml;
 
   @override
   void initState() {
     super.initState();
+    _currentHtml = _buildHtml(widget.config);
 
-    _controller = WebViewController()
-      ..setJavaScriptMode(JavaScriptMode.unrestricted)
-      ..setBackgroundColor(Colors.transparent)
-      ..addJavaScriptChannel(
-        'CaptchaBridge',
-        onMessageReceived: (message) {
-          _handleBridgeMessage(message.message);
-        },
-      )
-      ..setNavigationDelegate(
-        NavigationDelegate(
-          onProgress: (progress) {
-            if (mounted) setState(() => _progress = progress);
-          },
-          onPageFinished: (_) {
-            if (mounted) setState(() => _isLoading = false);
-          },
-          onWebResourceError: (error) {
-            if (mounted) {
-              setState(() {
-                _isLoading = false;
-                _errorMessage = '${error.errorCode}: ${error.description}'
-                    .trim();
-              });
-            }
-          },
-        ),
-      );
+    // Windows: 在 WebView2 创建前设置代理环境变量
+    if (_isDesktop && widget.proxyConfig != null && Platform.isWindows) {
+      _applyWebView2Proxy(widget.proxyConfig);
+      _proxyEnvSet = true;
+    }
 
-    _loadCaptcha();
+    if (!_isDesktop) {
+      _mobileController = mobile.WebViewController()
+        ..setJavaScriptMode(mobile.JavaScriptMode.unrestricted)
+        ..setBackgroundColor(Colors.transparent)
+        ..addJavaScriptChannel(
+          'CaptchaBridge',
+          onMessageReceived: (message) {
+            _handleBridgeMessage(message.message);
+          },
+        )
+        ..setNavigationDelegate(
+          mobile.NavigationDelegate(
+            onProgress: (progress) {
+              if (mounted) setState(() => _progress = progress);
+            },
+            onPageFinished: (_) {
+              if (mounted) setState(() => _isLoading = false);
+            },
+            onWebResourceError: (error) {
+              if (mounted) {
+                setState(() {
+                  _isLoading = false;
+                  _errorMessage =
+                      '${error.errorCode}: ${error.description}'.trim();
+                });
+              }
+            },
+          ),
+        )
+        ..loadHtmlString(_currentHtml, baseUrl: widget.baseUrl);
+    }
   }
 
+  // ─── 加载 / 刷新 ────────────────────────────────────
+
   Future<void> _loadCaptcha() async {
+    if (_disposed) return;
     setState(() {
       _isLoading = true;
       _errorMessage = null;
       _statusText = null;
       _progress = 0;
+      _currentHtml = _buildHtml(widget.config);
     });
 
-    final html = _buildHtml(widget.config);
-    await _controller.loadHtmlString(html, baseUrl: widget.baseUrl);
+    if (!_isDesktop && _mobileController != null) {
+      await _mobileController!.loadHtmlString(
+        _currentHtml,
+        baseUrl: widget.baseUrl,
+      );
+    } else if (_isDesktop) {
+      setState(() => _desktopKey = UniqueKey());
+    }
   }
 
+  // ─── Bridge 消息处理 ─────────────────────────────────
+
   void _handleBridgeMessage(String rawMessage) {
+    AppLogger.d(
+      'Bridge 收到消息: ${rawMessage.length > 100 ? "${rawMessage.substring(0, 100)}..." : rawMessage}',
+    );
     try {
       final decoded = jsonDecode(rawMessage);
       if (decoded is! Map) return;
@@ -120,8 +231,18 @@ class _CaptchaChallengePageState extends State<CaptchaChallengePage> {
 
       if (type == 'success') {
         final token = decoded['token']?.toString() ?? '';
-        if (token.isNotEmpty && mounted) {
+        final jsTs = decoded['_jsTs'];
+        if (jsTs is num) {
+          final delayMs = DateTime.now().millisecondsSinceEpoch - jsTs.toInt();
+          AppLogger.d('Bridge 收到 success, JS→Dart 传输延迟=${delayMs}ms, token长度=${token.length}');
+        } else {
+          AppLogger.d('Bridge 收到 success, token长度=${token.length}');
+        }
+        if (token.isNotEmpty && mounted && !_disposed) {
+          _disposed = true;
+          AppLogger.d('准备 pop 返回登录页');
           Navigator.of(context).pop(token);
+          AppLogger.d('pop 完成');
         }
         return;
       }
@@ -130,7 +251,8 @@ class _CaptchaChallengePageState extends State<CaptchaChallengePage> {
         final progress = decoded['progress']?.toString();
         if (mounted) {
           setState(() {
-            _statusText = progress == null ? '正在验证...' : '正在验证... $progress';
+            _statusText =
+                progress == null ? '正在验证...' : '正在验证... $progress';
           });
         }
         return;
@@ -145,6 +267,11 @@ class _CaptchaChallengePageState extends State<CaptchaChallengePage> {
         return;
       }
 
+      if (type == 'debug') {
+        AppLogger.d('JS debug: ${decoded['message']}');
+        return;
+      }
+
       if (type == 'expired') {
         if (mounted) {
           setState(() {
@@ -153,25 +280,131 @@ class _CaptchaChallengePageState extends State<CaptchaChallengePage> {
         }
         return;
       }
-    } catch (_) {
-      // 忽略非 JSON 消息。
+    } catch (_) {}
+  }
+
+  // ─── WebView 销毁 ───────────────────────────────────
+
+  void _cleanupWebView() {
+    if (_isDesktop) {
+      final ctrl = _desktopController;
+      _desktopController = null;
+      AppLogger.d('开始清理 WebView controller');
+      ctrl?.dispose();
+      AppLogger.d('WebView controller 已 dispose');
+      if (_proxyEnvSet) {
+        _clearWebView2Proxy();
+        _proxyEnvSet = false;
+      }
     }
   }
 
+  @override
+  void dispose() {
+    AppLogger.d('CaptchaChallengePage dispose 开始');
+    _disposed = true;
+    _cleanupWebView();
+    super.dispose();
+    AppLogger.d('CaptchaChallengePage dispose 完成');
+  }
+
+  // ═════════════════════════════════════════════════════
+  //  HTML 生成
+  // ═════════════════════════════════════════════════════
+
   String _buildHtml(CaptchaWebConfig config) {
     switch (config.type) {
       case 'turnstile':
-        return _buildTurnstileHtml(config.siteKey!);
+        return _baseHtml(
+          title: 'Cloudflare Turnstile',
+          body: '<div id="widget"></div>',
+          script: '''
+            function onTurnstileLoad() {
+              try {
+                turnstile.render('#widget', {
+                  sitekey: '${_js(config.siteKey!)}',
+                  callback: function(token) { solved(token); },
+                  'error-callback': function() { failed('Turnstile 验证失败，请重试'); },
+                  'expired-callback': function() { expired(); },
+                  'after-interactive-callback': function() {
+                    sendBridge({ type: 'debug', message: 'after-interactive fired' });
+                    markStatus('正在与 Cloudflare 服务器验证，请稍候...', false);
+                    sendBridge({ type: 'progress', progress: '服务器验证中' });
+                  }
+                });
+                markStatus('请完成人机验证', false);
+              } catch (e) {
+                failed(e && e.message ? e.message : String(e));
+              }
+            }
+          </script>
+          <script src="https://challenges.cloudflare.com/turnstile/v0/api.js?onload=onTurnstileLoad&render=explicit" async defer></script>
+          <script>
+          ''',
+        );
       case 'recaptcha':
-        return _buildRecaptchaHtml(config.siteKey!);
+        return _baseHtml(
+          title: 'reCAPTCHA V2',
+          body: '<div id="widget"></div>',
+          script: '''
+            function onRecaptchaLoad() {
+              try {
+                grecaptcha.render('widget', {
+                  sitekey: '${_js(config.siteKey!)}',
+                  callback: function(token) { solved(token); },
+                  'expired-callback': function() { expired(); },
+                  'error-callback': function() { failed('reCAPTCHA 加载或验证失败，请重试'); }
+                });
+                markStatus('请完成人机验证', false);
+              } catch (e) {
+                failed(e && e.message ? e.message : String(e));
+              }
+            }
+          </script>
+          <script src="https://www.google.com/recaptcha/api.js?onload=onRecaptchaLoad&render=explicit" async defer></script>
+          <script>
+          ''',
+        );
       case 'cap':
-        return _buildCapHtml(
-          instanceUrl: config.instanceUrl!,
-          siteKey: config.siteKey!,
-          assetServer: config.assetServer,
+        final endpoint = _capEndpoint(config.instanceUrl!, config.siteKey!);
+        final scriptUrl = _capWidgetScript(config.assetServer);
+        final safeEndpoint = const HtmlEscape().convert(endpoint);
+        final safeScriptUrl = const HtmlEscape().convert(scriptUrl);
+
+        return _baseHtml(
+          title: 'Cap',
+          body:
+              '<div id="widget"><cap-widget id="cap" required data-cap-api-endpoint="$safeEndpoint" data-cap-disable-haptics></cap-widget></div>',
+          script: '''
+            window.CAP_DISABLE_HAPTICS = true;
+            const cap = document.getElementById('cap');
+            if (cap) {
+              cap.addEventListener('solve', function(e) {
+                solved(e.detail && e.detail.token ? e.detail.token : '');
+              });
+              cap.addEventListener('progress', function(e) {
+                const progress = e.detail && e.detail.progress != null ? e.detail.progress : '';
+                markStatus('正在验证... ' + progress, false);
+                sendBridge({ type: 'progress', progress: progress });
+              });
+              cap.addEventListener('error', function(e) {
+                const message = e.detail && e.detail.message ? e.detail.message : 'Cap 验证失败';
+                failed(message);
+              });
+              markStatus('请完成人机验证', false);
+            }
+          </script>
+          <script type="module" src="$safeScriptUrl"></script>
+          <script>
+          ''',
         );
       default:
-        return _buildErrorHtml('不支持的验证码类型: ${config.type}');
+        return _baseHtml(
+          title: '验证码错误',
+          body:
+              '<div id="widget" class="error">${const HtmlEscape().convert('不支持的验证码类型: ${config.type}')}</div>',
+          script: "failed('不支持的验证码类型');",
+        );
     }
   }
 
@@ -260,8 +493,14 @@ class _CaptchaChallengePageState extends State<CaptchaChallengePage> {
   </div>
   <script>
     function sendBridge(payload) {
+      payload._jsTs = Date.now();
+      var json = JSON.stringify(payload);
       try {
-        CaptchaBridge.postMessage(JSON.stringify(payload));
+        if (typeof CaptchaBridge !== 'undefined' && CaptchaBridge.postMessage) {
+          CaptchaBridge.postMessage(json);
+        } else if (window.flutter_inappwebview && window.flutter_inappwebview.callHandler) {
+          window.flutter_inappwebview.callHandler('CaptchaBridge', json);
+        }
       } catch (e) {}
     }
     function markStatus(text, isError) {
@@ -289,139 +528,9 @@ class _CaptchaChallengePageState extends State<CaptchaChallengePage> {
 ''';
   }
 
-  String _buildTurnstileHtml(String siteKey) {
-    return _baseHtml(
-      title: 'Cloudflare Turnstile',
-      body: '<div id="widget"></div>',
-      script:
-          '''
-        function onTurnstileLoad() {
-          try {
-            turnstile.render('#widget', {
-              sitekey: '${_js(siteKey)}',
-              callback: function(token) { solved(token); },
-              'error-callback': function() { failed('Turnstile 验证失败，请重试'); },
-              'expired-callback': function() { expired(); }
-            });
-            markStatus('请完成人机验证', false);
-          } catch (e) {
-            failed(e && e.message ? e.message : String(e));
-          }
-        }
-      </script>
-      <script src="https://challenges.cloudflare.com/turnstile/v0/api.js?onload=onTurnstileLoad&render=explicit" async defer></script>
-      <script>
-      ''',
-    );
-  }
-
-  String _buildRecaptchaHtml(String siteKey) {
-    return _baseHtml(
-      title: 'reCAPTCHA V2',
-      body: '<div id="widget"></div>',
-      script:
-          '''
-        function onRecaptchaLoad() {
-          try {
-            grecaptcha.render('widget', {
-              sitekey: '${_js(siteKey)}',
-              callback: function(token) { solved(token); },
-              'expired-callback': function() { expired(); },
-              'error-callback': function() { failed('reCAPTCHA 加载或验证失败，请重试'); }
-            });
-            markStatus('请完成人机验证', false);
-          } catch (e) {
-            failed(e && e.message ? e.message : String(e));
-          }
-        }
-      </script>
-      <script src="https://www.google.com/recaptcha/api.js?onload=onRecaptchaLoad&render=explicit" async defer></script>
-      <script>
-      ''',
-    );
-  }
-
-  String _buildCapHtml({
-    required String instanceUrl,
-    required String siteKey,
-    String? assetServer,
-  }) {
-    final endpoint = _capEndpoint(instanceUrl, siteKey);
-    final scriptUrl = _capWidgetScript(assetServer);
-    final safeEndpoint = const HtmlEscape().convert(endpoint);
-    final safeScriptUrl = const HtmlEscape().convert(scriptUrl);
-
-    return _baseHtml(
-      title: 'Cap',
-      body:
-          '<div id="widget"><cap-widget id="cap" required data-cap-api-endpoint="$safeEndpoint" data-cap-disable-haptics></cap-widget></div>',
-      script:
-          '''
-        window.CAP_DISABLE_HAPTICS = true;
-        const cap = document.getElementById('cap');
-        if (cap) {
-          cap.addEventListener('solve', function(e) {
-            solved(e.detail && e.detail.token ? e.detail.token : '');
-          });
-          cap.addEventListener('progress', function(e) {
-            const progress = e.detail && e.detail.progress != null ? e.detail.progress : '';
-            markStatus('正在验证... ' + progress, false);
-            sendBridge({ type: 'progress', progress: progress });
-          });
-          cap.addEventListener('error', function(e) {
-            const message = e.detail && e.detail.message ? e.detail.message : 'Cap 验证失败';
-            failed(message);
-          });
-          markStatus('请完成人机验证', false);
-        }
-      </script>
-      <script type="module" src="$safeScriptUrl"></script>
-      <script>
-      ''',
-    );
-  }
-
-  String _buildErrorHtml(String message) {
-    return _baseHtml(
-      title: '验证码错误',
-      body:
-          '<div id="widget" class="error">${const HtmlEscape().convert(message)}</div>',
-      script: 'failed(${jsonEncode(message)});',
-    );
-  }
-
-  String _capEndpoint(String instanceUrl, String siteKey) {
-    final trimmedInstance = instanceUrl.trim().replaceAll(RegExp(r'/+$'), '');
-    final trimmedSiteKey = siteKey.trim().replaceAll(RegExp(r'^/+|/+$'), '');
-    return '$trimmedInstance/$trimmedSiteKey/';
-  }
-
-  String _capWidgetScript(String? assetServer) {
-    final asset = assetServer?.trim();
-    if (asset != null && asset.isNotEmpty) {
-      if (asset.startsWith('http://') || asset.startsWith('https://')) {
-        return asset;
-      }
-
-      if (asset.toLowerCase() == 'jsdelivr') {
-        return 'https://cdn.jsdelivr.net/npm/cap-widget';
-      }
-
-      if (asset.toLowerCase() == 'unpkg') {
-        return 'https://unpkg.com/cap-widget';
-      }
-    }
-
-    return 'https://cdn.jsdelivr.net/npm/cap-widget';
-  }
-
-  String _js(String input) {
-    return input
-        .replaceAll(r'\\', r'\\\\')
-        .replaceAll("'", r"\\'")
-        .replaceAll('\\n', r'\\n')
-        .replaceAll('\\r', r'\\r');
-  }
+  // ═════════════════════════════════════════════════════
+  //  Widget 构建
+  // ═════════════════════════════════════════════════════
 
   @override
   Widget build(BuildContext context) {
@@ -446,51 +555,173 @@ class _CaptchaChallengePageState extends State<CaptchaChallengePage> {
       ),
       body: Stack(
         children: [
-          WebViewWidget(controller: _controller),
-          if (_isLoading) const Center(child: CircularProgressIndicator()),
+          _isDesktop ? _buildDesktopWebView() : _buildMobileWebView(),
+          if (_isLoading)
+            const Center(child: CircularProgressIndicator()),
           if (_errorMessage != null)
-            Align(
-              alignment: Alignment.bottomCenter,
-              child: SafeArea(
-                child: Container(
-                  width: double.infinity,
-                  margin: const EdgeInsets.all(12),
-                  padding: const EdgeInsets.all(12),
-                  decoration: BoxDecoration(
-                    color: Theme.of(context).colorScheme.errorContainer,
-                    borderRadius: BorderRadius.circular(12),
-                  ),
-                  child: Text(
-                    _errorMessage!,
-                    textAlign: TextAlign.center,
-                    style: TextStyle(
-                      color: Theme.of(context).colorScheme.onErrorContainer,
-                    ),
-                  ),
+            _buildOverlayBanner(
+              child: Text(
+                _errorMessage!,
+                textAlign: TextAlign.center,
+                style: TextStyle(
+                  color: Theme.of(context).colorScheme.onErrorContainer,
                 ),
               ),
+              color: Theme.of(context).colorScheme.errorContainer,
             )
           else if (_statusText != null)
-            Align(
-              alignment: Alignment.bottomCenter,
-              child: SafeArea(
-                child: Container(
-                  margin: const EdgeInsets.all(12),
-                  padding: const EdgeInsets.symmetric(
-                    horizontal: 12,
-                    vertical: 8,
-                  ),
-                  decoration: BoxDecoration(
-                    color: Theme.of(context).colorScheme.surfaceContainerHighest
-                        .withValues(alpha: 0.92),
-                    borderRadius: BorderRadius.circular(12),
-                  ),
-                  child: Text(_statusText!, textAlign: TextAlign.center),
-                ),
+            _buildOverlayBanner(
+              child: Text(
+                _statusText!,
+                textAlign: TextAlign.center,
               ),
             ),
         ],
       ),
     );
   }
+
+  // ── 移动端 WebView ──────────────────────────────────
+
+  Widget _buildMobileWebView() {
+    return mobile.WebViewWidget(controller: _mobileController!);
+  }
+
+  // ── 桌面端 WebView ──────────────────────────────────
+
+  Widget _buildDesktopWebView() {
+    AppLogger.i('WebView 验证码 BaseUrl: ${WebUri(widget.baseUrl)}');
+
+    return InAppWebView(
+      key: _desktopKey,
+      initialSettings: InAppWebViewSettings(
+        javaScriptEnabled: true,
+        domStorageEnabled: true,
+        safeBrowsingEnabled: true,
+        isInspectable: true,
+        cacheMode: CacheMode.LOAD_NO_CACHE,
+        supportMultipleWindows: true,
+        allowUniversalAccessFromFileURLs: true,
+        allowFileAccessFromFileURLs: true,
+        userAgent: _desktopUserAgent,
+        transparentBackground: true,
+        supportZoom: false,
+        useHybridComposition: true,
+      ),
+      onWebViewCreated: (controller) {
+        _desktopController = controller;
+        controller.addJavaScriptHandler(
+          handlerName: 'CaptchaBridge',
+          callback: (args) {
+            if (args.isNotEmpty) {
+              _handleBridgeMessage(args[0].toString());
+            }
+          },
+        );
+
+        controller.loadUrl(
+          urlRequest: URLRequest(
+            url: WebUri("${widget.baseUrl}/virtual_captcha.html"),
+          ),
+        );
+      },
+      shouldInterceptRequest: (controller, request) async {
+        if (request.url.toString().contains('virtual_captcha.html')) {
+          AppLogger.i('黑魔法 -> 拦截成功，正在注入动态 HTML');
+          return WebResourceResponse(
+            contentType: 'text/html',
+            contentEncoding: 'utf-8',
+            data: Uint8List.fromList(utf8.encode(_currentHtml)),
+            statusCode: 200,
+            reasonPhrase: 'OK',
+          );
+        }
+
+        if (request.url.toString().contains('/h/b/rc') && request.method == 'POST') {
+          AppLogger.w('发现黑魔法后遗症校验请求 (POST)，执行强制 404');
+          await Future.delayed(Duration(seconds: 2));
+          return WebResourceResponse(
+            contentType: 'text/plain',
+            statusCode: 404,
+            reasonPhrase: 'Not Found',
+            data: Uint8List(0),
+          );
+        }
+        return null;
+      },
+      onLoadStart: (controller, url) {},
+      onLoadStop: (controller, url) {
+        if (mounted) setState(() => _isLoading = false);
+      },
+      onProgressChanged: (controller, progress) {
+        if (mounted) setState(() => _progress = progress);
+      },
+      onReceivedError: (controller, request, error) {
+        if (mounted) {
+          setState(() {
+            _isLoading = false;
+            _errorMessage = '${error.type}: ${error.description}'.trim();
+          });
+        }
+      },
+    );
+  }
+
+  // ── 通用底部提示条 ──────────────────────────────────
+
+  Widget _buildOverlayBanner({required Widget child, Color? color}) {
+    return Align(
+      alignment: Alignment.bottomCenter,
+      child: SafeArea(
+        child: Container(
+          width: double.infinity,
+          margin: const EdgeInsets.all(12),
+          padding: const EdgeInsets.all(12),
+          decoration: BoxDecoration(
+            color: color ??
+                Theme.of(context)
+                    .colorScheme
+                    .surfaceContainerHighest
+                    .withValues(alpha: 0.92),
+            borderRadius: BorderRadius.circular(12),
+          ),
+          child: child,
+        ),
+      ),
+    );
+  }
+
+  // ═════════════════════════════════════════════════════
+  //  辅助
+  // ═════════════════════════════════════════════════════
+
+  String _capEndpoint(String instanceUrl, String siteKey) {
+    final trimmedInstance = instanceUrl.trim().replaceAll(RegExp(r'/+$'), '');
+    final trimmedSiteKey = siteKey.trim().replaceAll(RegExp(r'^/+|/+$'), '');
+    return '$trimmedInstance/$trimmedSiteKey/';
+  }
+
+  String _capWidgetScript(String? assetServer) {
+    final asset = assetServer?.trim();
+    if (asset != null && asset.isNotEmpty) {
+      if (asset.startsWith('http://') || asset.startsWith('https://')) {
+        return asset;
+      }
+      if (asset.toLowerCase() == 'jsdelivr') {
+        return 'https://cdn.jsdelivr.net/npm/cap-widget';
+      }
+      if (asset.toLowerCase() == 'unpkg') {
+        return 'https://unpkg.com/cap-widget';
+      }
+    }
+    return 'https://cdn.jsdelivr.net/npm/cap-widget';
+  }
+
+  String _js(String input) {
+    return input
+        .replaceAll(r'\', r'\\')
+        .replaceAll("'", r"\'")
+        .replaceAll('\n', r'\n')
+        .replaceAll('\r', r'\r');
+  }
 }

lib/presentation/pages/files/category_files_page.dart

@@ -1,11 +1,20 @@
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:lucide_icons/lucide_icons.dart';
+import 'package:provider/provider.dart';
 
 import '../../../core/utils/date_utils.dart' as date_utils;
+import '../../../core/constants/sort_options.dart';
+import '../../../core/constants/storage_keys.dart';
 import '../../../core/utils/file_type_utils.dart';
 import '../../../data/models/file_model.dart';
 import '../../../router/app_router.dart';
 import '../../../services/file_service.dart';
+import '../../../services/storage_service.dart';
+import '../../providers/file_manager_provider.dart';
+import '../../widgets/file_info_dialog.dart';
+import '../../widgets/file_operation_dialogs.dart';
+import '../../widgets/selection_toolbar.dart';
 import '../../widgets/thumbnail_image.dart';
 import '../../widgets/toast_helper.dart';
 
@@ -52,20 +61,30 @@ class CategoryFilesPage extends StatefulWidget {
   State<CategoryFilesPage> createState() => _CategoryFilesPageState();
 }
 
-class _CategoryFilesPageState extends State<CategoryFilesPage> {
+class _CategoryFilesPageState extends State<CategoryFilesPage>
+    with TickerProviderStateMixin {
   final _fileService = FileService();
   final _scrollController = ScrollController();
 
   final List<FileModel> _files = [];
+  final Set<String> _selectedFilePaths = <String>{};
   String? _nextPageToken;
   String? _contextHint;
   bool _isLoading = true;
   bool _isLoadingMore = false;
   String? _errorMessage;
+  SortOption _sortOption = SortOption.default_;
+
+  bool get _hasSelection => _selectedFilePaths.isNotEmpty;
+
+  List<FileModel> get _selectedFiles => _files
+      .where((file) => _selectedFilePaths.contains(file.path))
+      .toList(growable: false);
 
   @override
   void initState() {
     super.initState();
+    _restoreSortOption();
     _loadFiles(refresh: true);
     _scrollController.addListener(_onScroll);
   }
@@ -74,6 +93,7 @@ class _CategoryFilesPageState extends State<CategoryFilesPage> {
   void didUpdateWidget(covariant CategoryFilesPage oldWidget) {
     super.didUpdateWidget(oldWidget);
     if (oldWidget.args.category != widget.args.category) {
+      _clearSelection();
       _loadFiles(refresh: true);
     }
   }
@@ -102,6 +122,7 @@ class _CategoryFilesPageState extends State<CategoryFilesPage> {
         _nextPageToken = null;
         _contextHint = null;
         _files.clear();
+        _selectedFilePaths.clear();
       });
     } else {
       setState(() {
@@ -114,6 +135,8 @@ class _CategoryFilesPageState extends State<CategoryFilesPage> {
       final response = await _fileService.listFilesByCategory(
         category: widget.args.category,
         pageSize: 100,
+        orderBy: _sortOption.field.apiKey,
+        orderDirection: _sortOption.direction.apiKey,
         nextPageToken: refresh ? null : _nextPageToken,
       );
 
@@ -154,24 +177,200 @@ class _CategoryFilesPageState extends State<CategoryFilesPage> {
     }
   }
 
+  Widget _buildSortMenu() {
+    final allOptions = [
+      for (final field in SortField.values)
+        for (final dir in SortDirection.values) SortOption(field, dir),
+    ];
+
+    return PopupMenuButton<SortOption>(
+      icon: const Icon(LucideIcons.arrowUpDown),
+      tooltip: '排序',
+      position: PopupMenuPosition.under,
+      onSelected: _setSortOption,
+      itemBuilder: (context) => allOptions.map((option) {
+        final isSelected = _sortOption == option;
+        return PopupMenuItem<SortOption>(
+          value: option,
+          child: Row(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              if (isSelected)
+                Padding(
+                  padding: const EdgeInsets.only(right: 8),
+                  child: Icon(
+                    Icons.check,
+                    size: 16,
+                    color: Theme.of(context).colorScheme.primary,
+                  ),
+                )
+              else
+                const SizedBox(width: 24),
+              Text(option.menuLabel),
+            ],
+          ),
+        );
+      }).toList(),
+    );
+  }
+
   Future<void> _refresh() => _loadFiles(refresh: true);
 
+  Future<void> _restoreSortOption() async {
+    final key = await StorageService.instance.getString(
+      StorageKeys.fileSortOption,
+    );
+    final option = SortOption.fromKey(key);
+    if (option != _sortOption) {
+      setState(() => _sortOption = option);
+    }
+  }
+
+  Future<void> _setSortOption(SortOption option) async {
+    if (_sortOption == option) return;
+    setState(() => _sortOption = option);
+    await StorageService.instance.setString(
+      StorageKeys.fileSortOption,
+      option.toKey(),
+    );
+    await _loadFiles(refresh: true);
+  }
+
+  void _toggleSelection(FileModel file) {
+    HapticFeedback.selectionClick();
+    setState(() {
+      if (_selectedFilePaths.contains(file.path)) {
+        _selectedFilePaths.remove(file.path);
+      } else {
+        _selectedFilePaths.add(file.path);
+      }
+    });
+  }
+
+  void _clearSelection() {
+    if (_selectedFilePaths.isEmpty) return;
+    setState(_selectedFilePaths.clear);
+  }
+
+  void _selectAllVisible() {
+    setState(() {
+      _selectedFilePaths
+        ..clear()
+        ..addAll(_files.map((file) => file.path));
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
+    return PopScope(
+      canPop: !_hasSelection,
+      onPopInvokedWithResult: (didPop, result) {
+        if (!didPop && _hasSelection) {
+          _clearSelection();
+        }
+      },
+      child: Scaffold(
+        appBar: _buildAppBar(context),
+        body: RefreshIndicator(onRefresh: _refresh, child: _buildBody(context)),
+        bottomNavigationBar: _buildSelectionBottomBar(context),
+      ),
+    );
+  }
+
+  PreferredSizeWidget _buildAppBar(BuildContext context) {
     final args = widget.args;
 
-    return Scaffold(
-      appBar: AppBar(
-        title: Text(args.title),
+    if (_hasSelection) {
+      return AppBar(
+        automaticallyImplyLeading: false,
+        leading: IconButton(
+          icon: const Icon(LucideIcons.x),
+          tooltip: '取消选择',
+          onPressed: _clearSelection,
+        ),
+        centerTitle: true,
+        title: Text('已选中 ${_selectedFilePaths.length} 个文件'),
         actions: [
-          IconButton(
-            icon: const Icon(LucideIcons.refreshCw),
-            tooltip: '刷新',
-            onPressed: _refresh,
-          ),
+          TextButton(onPressed: _selectAllVisible, child: const Text('全选')),
         ],
+      );
+    }
+
+    return AppBar(
+      title: Text(args.title),
+      actions: [
+        _buildSortMenu(),
+        IconButton(
+          icon: const Icon(LucideIcons.refreshCw),
+          tooltip: '刷新',
+          onPressed: _refresh,
+        ),
+      ],
+    );
+  }
+
+  Widget _buildSelectionBottomBar(BuildContext context) {
+    final selected = _selectedFiles;
+    final singleSelected = selected.length == 1 ? selected.first : null;
+
+    return AnimatedSize(
+      duration: const Duration(milliseconds: 220),
+      curve: Curves.easeOutCubic,
+      alignment: Alignment.bottomCenter,
+      child: AnimatedSwitcher(
+        duration: const Duration(milliseconds: 220),
+        switchInCurve: Curves.easeOutCubic,
+        switchOutCurve: Curves.easeInCubic,
+        layoutBuilder: (currentChild, previousChildren) {
+          return Stack(
+            alignment: Alignment.bottomCenter,
+            children: <Widget>[...previousChildren, ?currentChild],
+          );
+        },
+        transitionBuilder: (child, animation) {
+          final curved = CurvedAnimation(
+            parent: animation,
+            curve: Curves.easeOutCubic,
+            reverseCurve: Curves.easeInCubic,
+          );
+          final slide = Tween<Offset>(
+            begin: const Offset(0, 0.10),
+            end: Offset.zero,
+          ).animate(curved);
+
+          return FadeTransition(
+            opacity: curved,
+            child: SlideTransition(position: slide, child: child),
+          );
+        },
+        child: _hasSelection
+            ? SelectionToolbar(
+                key: const ValueKey('category-selection-toolbar'),
+                selectionCount: _selectedFilePaths.length,
+                totalCount: _files.length,
+                onCancel: _clearSelection,
+                onSelectAll: _selectAllVisible,
+                onMore: singleSelected == null
+                    ? null
+                    : () => _showSelectionMore(context, singleSelected),
+                onMove: () => FileOperationDialogs.showBatchMoveDialog(
+                  context,
+                  context.read<FileManagerProvider>(),
+                  _selectedFilePaths.toList(),
+                  false,
+                ),
+                onCopy: () => FileOperationDialogs.showBatchMoveDialog(
+                  context,
+                  context.read<FileManagerProvider>(),
+                  _selectedFilePaths.toList(),
+                  true,
+                ),
+                onDelete: () => _deleteSelectedFiles(context, selected),
+              )
+            : const SizedBox.shrink(
+                key: ValueKey('category-selection-toolbar-empty'),
+              ),
       ),
-      body: RefreshIndicator(onRefresh: _refresh, child: _buildBody(context)),
     );
   }
 
@@ -255,7 +454,7 @@ class _CategoryFilesPageState extends State<CategoryFilesPage> {
             horizontalPadding,
             10,
             horizontalPadding,
-            24,
+            _hasSelection ? 92 : 24,
           ),
           children: [
             _buildSummaryHeader(context),
@@ -271,11 +470,26 @@ class _CategoryFilesPageState extends State<CategoryFilesPage> {
                           Padding(
                             padding: EdgeInsets.only(bottom: spacing),
                             child: _CategoryFileTile(
+                              key: ValueKey(
+                                'category-file-${file.id.isNotEmpty ? file.id : file.path}',
+                              ),
                               file: file,
                               contextHint: _contextHint,
                               category: widget.args.category,
                               accentColor: widget.args.color,
-                              onTap: () => _openFile(context, file),
+                              isSelected: _selectedFilePaths.contains(
+                                file.path,
+                              ),
+                              selectionMode: _hasSelection,
+                              onTap: () {
+                                if (_hasSelection) {
+                                  _toggleSelection(file);
+                                } else {
+                                  _openFile(context, file);
+                                }
+                              },
+                              onLongPress: () => _toggleSelection(file),
+                              onSelect: () => _toggleSelection(file),
                             ),
                           ),
                       ],
@@ -392,6 +606,140 @@ class _CategoryFilesPageState extends State<CategoryFilesPage> {
       );
     }
   }
+
+  Future<void> _deleteSelectedFiles(
+    BuildContext context,
+    List<FileModel> selectedFiles,
+  ) async {
+    if (selectedFiles.isEmpty) return;
+
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (dialogContext) => AlertDialog(
+        title: const Text('删除确认'),
+        content: Text('确定删除这 ${selectedFiles.length} 个文件吗？'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(dialogContext).pop(false),
+            child: const Text('取消'),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.of(dialogContext).pop(true),
+            style: FilledButton.styleFrom(
+              backgroundColor: Theme.of(context).colorScheme.error,
+            ),
+            child: const Text('删除'),
+          ),
+        ],
+      ),
+    );
+
+    if (confirmed != true) return;
+
+    try {
+      await _fileService.deleteFiles(
+        uris: selectedFiles.map((file) => file.path).toList(),
+      );
+      if (!mounted) return;
+      setState(() {
+        final selectedPaths = selectedFiles.map((file) => file.path).toSet();
+        _files.removeWhere((file) => selectedPaths.contains(file.path));
+        _selectedFilePaths.clear();
+      });
+      ToastHelper.success('删除成功');
+    } catch (e) {
+      if (context.mounted) {
+        ToastHelper.failure('删除失败: $e');
+      }
+    }
+  }
+
+  Future<void> _renameFile(BuildContext context, FileModel file) async {
+    final controller = TextEditingController(text: file.name);
+
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (dialogContext) => AlertDialog(
+        title: const Text('重命名'),
+        content: TextField(
+          controller: controller,
+          decoration: const InputDecoration(
+            labelText: '新名称',
+            prefixIcon: Icon(LucideIcons.edit3, size: 20),
+          ),
+          autofocus: true,
+          onSubmitted: (_) => Navigator.of(dialogContext).pop(true),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(dialogContext).pop(false),
+            child: const Text('取消'),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.of(dialogContext).pop(true),
+            child: const Text('确定'),
+          ),
+        ],
+      ),
+    );
+
+    final newName = controller.text.trim();
+    if (confirmed != true || newName.isEmpty || newName == file.name) return;
+
+    try {
+      final response = await _fileService.renameFile(
+        uri: file.path,
+        newName: newName,
+      );
+      if (!mounted) return;
+      if (response.isEmpty) {
+        await _refresh();
+      } else {
+        final updatedFile = FileModel.fromJson(response);
+        setState(() {
+          final index = _files.indexWhere((item) => item.path == file.path);
+          if (index != -1) _files[index] = updatedFile;
+          _selectedFilePaths
+            ..remove(file.path)
+            ..add(updatedFile.path);
+        });
+      }
+      ToastHelper.success('重命名成功');
+    } catch (e) {
+      if (context.mounted) {
+        ToastHelper.failure('重命名失败: $e');
+      }
+    }
+  }
+
+  void _showSelectionMore(BuildContext context, FileModel file) {
+    showModalBottomSheet<void>(
+      context: context,
+      builder: (sheetContext) => SafeArea(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            ListTile(
+              leading: const Icon(Icons.edit),
+              title: const Text('重命名'),
+              onTap: () {
+                Navigator.of(sheetContext).pop();
+                _renameFile(context, file);
+              },
+            ),
+            ListTile(
+              leading: const Icon(Icons.info_outline),
+              title: const Text('查看详情'),
+              onTap: () {
+                Navigator.of(sheetContext).pop();
+                FileInfoPanel.showAsBottomSheet(context, file);
+              },
+            ),
+          ],
+        ),
+      ),
+    );
+  }
 }
 
 class _CategoryFileTile extends StatelessWidget {
@@ -399,14 +747,23 @@ class _CategoryFileTile extends StatelessWidget {
   final String? contextHint;
   final String category;
   final Color accentColor;
+  final bool isSelected;
+  final bool selectionMode;
   final VoidCallback onTap;
+  final VoidCallback onLongPress;
+  final VoidCallback onSelect;
 
   const _CategoryFileTile({
+    super.key,
     required this.file,
     required this.contextHint,
     required this.category,
     required this.accentColor,
+    required this.isSelected,
+    required this.selectionMode,
     required this.onTap,
+    required this.onLongPress,
+    required this.onSelect,
   });
 
   @override
@@ -419,73 +776,127 @@ class _CategoryFileTile extends StatelessWidget {
     final ext = FileTypeUtils.getExtension(file.name);
     final isPsd = ext == 'psd' || ext == 'psb';
 
-    return Material(
-      color: theme.colorScheme.surfaceContainerLow,
-      borderRadius: BorderRadius.circular(14),
-      clipBehavior: Clip.antiAlias,
-      child: InkWell(
-        onTap: onTap,
-        child: DecoratedBox(
-          decoration: BoxDecoration(
-            border: Border.all(
-              color: theme.dividerColor.withValues(alpha: 0.12),
+    final borderColor = isSelected
+        ? theme.colorScheme.primary
+        : theme.dividerColor.withValues(alpha: 0.12);
+
+    final showSelectionCircle = selectionMode || isSelected;
+
+    return RepaintBoundary(
+      child: AnimatedScale(
+        duration: const Duration(milliseconds: 150),
+        curve: Curves.easeOutCubic,
+        scale: isSelected ? 0.985 : 1.0,
+        child: Material(
+          color: theme.colorScheme.surfaceContainerLow,
+          borderRadius: BorderRadius.circular(14),
+          clipBehavior: Clip.antiAlias,
+          child: InkWell(
+            onTap: onTap,
+            onLongPress: onLongPress,
+            child: Stack(
+              clipBehavior: Clip.none,
+              children: [
+                Column(
+                  crossAxisAlignment: CrossAxisAlignment.stretch,
+                  children: [
+                    AspectRatio(
+                      aspectRatio: isMedia || isPsd ? 1 : 1.45,
+                      child: Stack(
+                        fit: StackFit.expand,
+                        children: [
+                          RepaintBoundary(
+                            child: ThumbnailImage(
+                              file: file,
+                              contextHint: contextHint,
+                              borderRadius: 0,
+                            ),
+                          ),
+                          Positioned(
+                            top: 7,
+                            left: 7,
+                            child: _TypeBadge(
+                              icon: _badgeIcon(),
+                              label: _badgeLabel(ext),
+                              color: accentColor,
+                              compact: isMedia,
+                            ),
+                          ),
+                          if (category == 'video')
+                            const Center(child: _PlayOverlay()),
+                        ],
+                      ),
+                    ),
+                    Padding(
+                      padding: const EdgeInsets.fromLTRB(10, 8, 10, 10),
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [
+                          Text(
+                            file.name,
+                            maxLines: isAudio || isDocument ? 2 : 1,
+                            overflow: TextOverflow.ellipsis,
+                            style: theme.textTheme.bodyMedium?.copyWith(
+                              fontWeight: FontWeight.w600,
+                            ),
+                          ),
+                          const SizedBox(height: 3),
+                          Text(
+                            '${FileTypeUtils.getFileTypeDescription(file.name)} · ${date_utils.DateUtils.formatFileSize(file.size)}',
+                            maxLines: 1,
+                            overflow: TextOverflow.ellipsis,
+                            style: theme.textTheme.bodySmall?.copyWith(
+                              color: theme.hintColor,
+                            ),
+                          ),
+                        ],
+                      ),
+                    ),
+                  ],
+                ),
+                Positioned.fill(
+                  child: IgnorePointer(
+                    child: AnimatedContainer(
+                      duration: const Duration(milliseconds: 150),
+                      curve: Curves.easeOutCubic,
+                      decoration: BoxDecoration(
+                        borderRadius: BorderRadius.circular(14),
+                        border: Border.all(
+                          color: borderColor,
+                          width: isSelected ? 2.2 : 1,
+                        ),
+                        boxShadow: isSelected
+                            ? [
+                                BoxShadow(
+                                  color: theme.colorScheme.primary.withValues(
+                                    alpha: 0.12,
+                                  ),
+                                  blurRadius: 10,
+                                  spreadRadius: 0.5,
+                                ),
+                              ]
+                            : const [],
+                      ),
+                    ),
+                  ),
+                ),
+                Positioned(
+                  top: 7,
+                  right: 7,
+                  child: AnimatedOpacity(
+                    duration: const Duration(milliseconds: 130),
+                    opacity: showSelectionCircle ? 1 : 0,
+                    child: IgnorePointer(
+                      ignoring: !showSelectionCircle,
+                      child: _SelectionCircle(
+                        selected: isSelected,
+                        onTap: onSelect,
+                      ),
+                    ),
+                  ),
+                ),
+              ],
             ),
-            borderRadius: BorderRadius.circular(14),
-          ),
-          child: Column(
-            crossAxisAlignment: CrossAxisAlignment.stretch,
-            children: [
-              AspectRatio(
-                aspectRatio: isMedia || isPsd ? 1 : 1.45,
-                child: Stack(
-                  fit: StackFit.expand,
-                  children: [
-                    ThumbnailImage(
-                      file: file,
-                      contextHint: contextHint,
-                      borderRadius: 0,
-                    ),
-                    Positioned(
-                      top: 7,
-                      left: 7,
-                      child: _TypeBadge(
-                        icon: _badgeIcon(),
-                        label: _badgeLabel(ext),
-                        color: accentColor,
-                        compact: isMedia,
-                      ),
-                    ),
-                    if (category == 'video')
-                      const Center(child: _PlayOverlay()),
-                  ],
-                ),
-              ),
-              Padding(
-                padding: const EdgeInsets.fromLTRB(10, 8, 10, 10),
-                child: Column(
-                  crossAxisAlignment: CrossAxisAlignment.start,
-                  children: [
-                    Text(
-                      file.name,
-                      maxLines: isAudio || isDocument ? 2 : 1,
-                      overflow: TextOverflow.ellipsis,
-                      style: theme.textTheme.bodyMedium?.copyWith(
-                        fontWeight: FontWeight.w600,
-                      ),
-                    ),
-                    const SizedBox(height: 3),
-                    Text(
-                      '${FileTypeUtils.getFileTypeDescription(file.name)} · ${date_utils.DateUtils.formatFileSize(file.size)}',
-                      maxLines: 1,
-                      overflow: TextOverflow.ellipsis,
-                      style: theme.textTheme.bodySmall?.copyWith(
-                        color: theme.hintColor,
-                      ),
-                    ),
-                  ],
-                ),
-              ),
-            ],
           ),
         ),
       ),
@@ -524,6 +935,53 @@ class _CategoryFileTile extends StatelessWidget {
   }
 }
 
+class _SelectionCircle extends StatelessWidget {
+  final bool selected;
+  final VoidCallback? onTap;
+
+  const _SelectionCircle({required this.selected, this.onTap});
+
+  @override
+  Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+
+    return Material(
+      color: Colors.transparent,
+      child: InkWell(
+        onTap: onTap,
+        customBorder: const CircleBorder(),
+        child: AnimatedContainer(
+          duration: const Duration(milliseconds: 160),
+          width: 28,
+          height: 28,
+          decoration: BoxDecoration(
+            shape: BoxShape.circle,
+            color: selected
+                ? colorScheme.primary
+                : colorScheme.surface.withValues(alpha: 0.86),
+            border: Border.all(
+              color: selected
+                  ? colorScheme.primary
+                  : colorScheme.outline.withValues(alpha: 0.42),
+              width: 1.4,
+            ),
+            boxShadow: [
+              BoxShadow(
+                color: Colors.black.withValues(alpha: 0.10),
+                blurRadius: 8,
+                offset: const Offset(0, 2),
+              ),
+            ],
+          ),
+          child: selected
+              ? const Icon(LucideIcons.check, color: Colors.white, size: 16)
+              : null,
+        ),
+      ),
+    );
+  }
+}
+
 class _TypeBadge extends StatelessWidget {
   final IconData icon;
   final String label;

lib/presentation/pages/files/files_page.dart

@@ -4,10 +4,12 @@ import 'dart:ui';
 
 import 'package:cross_file/cross_file.dart';
 import 'package:desktop_drop/desktop_drop.dart';
+import 'package:flutter/services.dart';
 import 'package:cloudreve4_flutter/data/models/file_model.dart';
 import 'package:cloudreve4_flutter/services/file_service.dart';
 import 'package:cloudreve4_flutter/services/upload_service.dart';
 import '../../../core/utils/file_utils.dart';
+import '../../../core/constants/sort_options.dart';
 import 'package:flutter/material.dart';
 import 'package:lucide_icons/lucide_icons.dart';
 import 'package:provider/provider.dart';
@@ -41,6 +43,8 @@ class _FilesPageState extends State<FilesPage> {
   bool _isFirstLoad = true;
   FileModel? _infoFile;
   final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
+  final ScrollController _scrollController = ScrollController();
+  final ScrollController _breadcrumbController = ScrollController();
 
   // FAB 状态
   bool _isFabVisible = true;
@@ -50,24 +54,37 @@ class _FilesPageState extends State<FilesPage> {
   // 桌面端拖拽状态
   bool _isDraggingOver = false;
 
+  // 滑动手势追踪
+  Offset? _swipeStartPos;
+  DateTime? _swipeStartTime;
+
   @override
   void initState() {
     super.initState();
+    _scrollController.addListener(_onScrollForPagination);
+    HardwareKeyboard.instance.addHandler(_handleKeyEvent);
 
     Future.delayed(const Duration(milliseconds: 100), () {
       if (mounted) {
-        final fileManager = Provider.of<FileManagerProvider>(context, listen: false);
+        final fileManager = Provider.of<FileManagerProvider>(
+          context,
+          listen: false,
+        );
         final screenWidth = MediaQuery.of(context).size.width;
         if (screenWidth >= 1000) {
           fileManager.setViewType(FileViewType.grid);
         } else {
           fileManager.setViewType(FileViewType.list);
         }
+        fileManager.restoreSortOption();
         if (_isFirstLoad) {
           fileManager.loadFiles();
           _isFirstLoad = false;
         }
-        final downloadManager = Provider.of<DownloadManagerProvider>(context, listen: false);
+        final downloadManager = Provider.of<DownloadManagerProvider>(
+          context,
+          listen: false,
+        );
         downloadManager.initialize();
       }
     });
@@ -75,8 +92,13 @@ class _FilesPageState extends State<FilesPage> {
     // 上传完成 → 自动刷新当前目录文件列表
     UploadService.instance.onUploadCompleted = (targetPath, fileName) {
       if (!mounted) return;
-      final fileManager = Provider.of<FileManagerProvider>(context, listen: false);
-      final normalizedCurrent = FileUtils.toCloudreveUri(fileManager.currentPath);
+      final fileManager = Provider.of<FileManagerProvider>(
+        context,
+        listen: false,
+      );
+      final normalizedCurrent = FileUtils.toCloudreveUri(
+        fileManager.currentPath,
+      );
       if (targetPath == normalizedCurrent) {
         final fileUri = targetPath.endsWith('/')
             ? '$targetPath$fileName'
@@ -88,11 +110,74 @@ class _FilesPageState extends State<FilesPage> {
 
   @override
   void dispose() {
+    _scrollController.removeListener(_onScrollForPagination);
+    _scrollController.dispose();
+    _breadcrumbController.dispose();
     _fabShowTimer?.cancel();
+    HardwareKeyboard.instance.removeHandler(_handleKeyEvent);
     UploadService.instance.onUploadCompleted = null;
     super.dispose();
   }
 
+  void _onScrollForPagination() {
+    if (!_scrollController.hasClients) return;
+    final fileManager = Provider.of<FileManagerProvider>(
+      context,
+      listen: false,
+    );
+    if (!fileManager.hasMore ||
+        fileManager.isLoadingMore ||
+        fileManager.isLoading) {
+      return;
+    }
+    final position = _scrollController.position;
+    if (position.pixels >= position.maxScrollExtent - 320) {
+      fileManager.loadMoreFiles();
+    }
+  }
+
+  bool _handleKeyEvent(KeyEvent event) {
+    if (!mounted || event is! KeyDownEvent) return false;
+    // Ctrl+F / Cmd+F → 打开搜索
+    if (event.logicalKey == LogicalKeyboardKey.keyF &&
+        (HardwareKeyboard.instance.isControlPressed ||
+            HardwareKeyboard.instance.isMetaPressed)) {
+      if (ModalRoute.of(context)?.isCurrent == false) return false;
+      final nav = Provider.of<NavigationProvider>(context, listen: false);
+      if (nav.currentIndex == 1 && !SearchDialog.isShowing) {
+        SearchDialog.show(context);
+        return true;
+      }
+    }
+    return false;
+  }
+
+  void _onPointerDown(PointerDownEvent event) {
+    _swipeStartPos = event.position;
+    _swipeStartTime = DateTime.now();
+  }
+
+  void _onPointerUp(PointerUpEvent event) {
+    if (_swipeStartPos == null || _swipeStartTime == null) return;
+    final dx = event.position.dx - _swipeStartPos!.dx;
+    final dy = event.position.dy - _swipeStartPos!.dy;
+    final duration = DateTime.now().difference(_swipeStartTime!);
+    _swipeStartPos = null;
+    _swipeStartTime = null;
+    // 从右往左快速滑动 → 返回上一级
+    if (dx < -150 &&
+        dx.abs() > dy.abs() * 1.5 &&
+        duration.inMilliseconds < 500) {
+      final fileManager = Provider.of<FileManagerProvider>(
+        context,
+        listen: false,
+      );
+      if (fileManager.currentPath != '/') {
+        fileManager.goBack();
+      }
+    }
+  }
+
   void _showFileInfo(FileModel file) {
     setState(() => _infoFile = file);
     // 等待下一帧 rebuild 完成，endDrawer 从 null 变为非 null 后再打开
@@ -101,6 +186,39 @@ class _FilesPageState extends State<FilesPage> {
     });
   }
 
+  void _showSelectionMore(FileModel file, FileManagerProvider fileManager) {
+    showModalBottomSheet<void>(
+      context: context,
+      builder: (sheetContext) => SafeArea(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            ListTile(
+              leading: const Icon(Icons.edit),
+              title: const Text('重命名'),
+              onTap: () {
+                Navigator.of(sheetContext).pop();
+                FileOperationDialogs.showRenameDialog(
+                  context,
+                  fileManager,
+                  file,
+                );
+              },
+            ),
+            ListTile(
+              leading: const Icon(Icons.info_outline),
+              title: const Text('查看详情'),
+              onTap: () {
+                Navigator.of(sheetContext).pop();
+                _showFileInfo(file);
+              },
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
   // ---- FAB 显隐控制 ----
 
   void _hideFab() {
@@ -147,13 +265,17 @@ class _FilesPageState extends State<FilesPage> {
   Widget build(BuildContext context) {
     final isDesktop = MediaQuery.of(context).size.width >= 1000;
 
-    return Scaffold(
-      key: _scaffoldKey,
-      appBar: _buildAppBar(context),
-      body: _buildBody(context),
-      bottomNavigationBar: _buildBottomBar(context),
-      endDrawer: _infoFile != null ? FileInfoPanel(file: _infoFile!) : null,
-      floatingActionButton: isDesktop ? null : _buildSpeedDialFAB(context),
+    return Listener(
+      onPointerDown: _onPointerDown,
+      onPointerUp: _onPointerUp,
+      child: Scaffold(
+        key: _scaffoldKey,
+        appBar: _buildAppBar(context),
+        body: _buildBody(context),
+        bottomNavigationBar: _buildBottomBar(context),
+        endDrawer: _infoFile != null ? FileInfoPanel(file: _infoFile!) : null,
+        floatingActionButton: isDesktop ? null : _buildSpeedDialFAB(context),
+      ),
     );
   }
 
@@ -168,8 +290,13 @@ class _FilesPageState extends State<FilesPage> {
             if (fileManager.currentPath == '/') {
               return const Text('文件');
             }
-            final segments = fileManager.currentPath.split('/').where((s) => s.isNotEmpty).toList();
-            return Text(segments.isNotEmpty ? segments.last : '文件');
+            final segments = fileManager.currentPath
+                .split('/')
+                .where((s) => s.isNotEmpty)
+                .toList();
+            return Text(
+              segments.isNotEmpty ? _decodePathSegment(segments.last) : '文件',
+            );
           }
           return _buildMobileBreadcrumb(context, fileManager);
         },
@@ -178,15 +305,45 @@ class _FilesPageState extends State<FilesPage> {
     );
   }
 
-  Widget _buildMobileBreadcrumb(BuildContext context, FileManagerProvider fileManager) {
+  /// 循环解码路径段，处理多重 URL 编码（如 %25E4%25B8%25AD → 中文）
+  String _decodePathSegment(String segment) {
+    var decoded = segment;
+    for (var i = 0; i < 5; i++) {
+      try {
+        final next = Uri.decodeComponent(decoded);
+        if (next == decoded) break;
+        decoded = next;
+      } catch (_) {
+        break;
+      }
+    }
+    return decoded;
+  }
+
+  Widget _buildMobileBreadcrumb(
+    BuildContext context,
+    FileManagerProvider fileManager,
+  ) {
     final theme = Theme.of(context);
     final colorScheme = theme.colorScheme;
     final pathParts = fileManager.currentPath.split('/');
     pathParts.removeWhere((part) => part.isEmpty);
 
+    // 路径变化后自动滚动到末尾
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (_breadcrumbController.hasClients) {
+        _breadcrumbController.animateTo(
+          _breadcrumbController.position.maxScrollExtent,
+          duration: const Duration(milliseconds: 200),
+          curve: Curves.easeOut,
+        );
+      }
+    });
+
     return SizedBox(
       height: 40,
       child: ListView(
+        controller: _breadcrumbController,
         scrollDirection: Axis.horizontal,
         children: [
           _buildBreadcrumbChip(
@@ -194,22 +351,30 @@ class _FilesPageState extends State<FilesPage> {
             label: '文件',
             icon: LucideIcons.home,
             color: colorScheme.primary,
-            onTap: () => fileManager.currentPath != '/' ? fileManager.enterFolder('/') : null,
+            onTap: () => fileManager.currentPath != '/'
+                ? fileManager.enterFolder('/')
+                : null,
           ),
           for (int i = 0; i < pathParts.length; i++) ...[
             Padding(
               padding: const EdgeInsets.symmetric(horizontal: 2),
-              child: Icon(LucideIcons.chevronRight, size: 14, color: theme.hintColor.withValues(alpha: 0.5)),
+              child: Icon(
+                LucideIcons.chevronRight,
+                size: 14,
+                color: theme.hintColor.withValues(alpha: 0.5),
+              ),
             ),
             _buildBreadcrumbChip(
               context,
-              label: pathParts[i],
+              label: _decodePathSegment(pathParts[i]),
               icon: null,
               color: colorScheme.primary,
               isLast: i == pathParts.length - 1,
               onTap: () {
                 final targetPath = '/${pathParts.sublist(0, i + 1).join('/')}';
-                if (targetPath != fileManager.currentPath) fileManager.enterFolder(targetPath);
+                if (targetPath != fileManager.currentPath) {
+                  fileManager.enterFolder(targetPath);
+                }
               },
             ),
           ],
@@ -233,7 +398,9 @@ class _FilesPageState extends State<FilesPage> {
         height: 28,
         padding: const EdgeInsets.symmetric(horizontal: 8),
         decoration: BoxDecoration(
-          color: isLast ? color.withValues(alpha: 0.15) : color.withValues(alpha: 0.06),
+          color: isLast
+              ? color.withValues(alpha: 0.15)
+              : color.withValues(alpha: 0.06),
           borderRadius: BorderRadius.circular(14),
         ),
         child: Row(
@@ -267,12 +434,19 @@ class _FilesPageState extends State<FilesPage> {
       Consumer<FileManagerProvider>(
         builder: (context, fileManager, child) {
           return IconButton(
-            icon: Icon(fileManager.isLoading ? Icons.hourglass_empty : Icons.refresh),
+            icon: Icon(
+              fileManager.isLoading ? Icons.hourglass_empty : Icons.refresh,
+            ),
             onPressed: () => fileManager.refreshFiles(),
             tooltip: '刷新',
           );
         },
       ),
+      Consumer<FileManagerProvider>(
+        builder: (context, fileManager, child) {
+          return _buildSortMenu(fileManager);
+        },
+      ),
       Consumer<FileManagerProvider>(
         builder: (context, fileManager, child) {
           final icon = fileManager.viewType == FileViewType.list
@@ -287,14 +461,19 @@ class _FilesPageState extends State<FilesPage> {
                     : FileViewType.list,
               );
             },
-            tooltip: fileManager.viewType == FileViewType.list ? '网格视图' : '列表视图',
+            tooltip: fileManager.viewType == FileViewType.list
+                ? '网格视图'
+                : '列表视图',
           );
         },
       ),
       IconButton(
         icon: const Icon(Icons.add),
         onPressed: () {
-          final fileManager = Provider.of<FileManagerProvider>(context, listen: false);
+          final fileManager = Provider.of<FileManagerProvider>(
+            context,
+            listen: false,
+          );
           FileOperationDialogs.showCreateDialog(context, fileManager);
         },
         tooltip: '新建',
@@ -306,7 +485,8 @@ class _FilesPageState extends State<FilesPage> {
       ),
       IconButton(
         icon: const Icon(Icons.cloud_download),
-        onPressed: () => Provider.of<NavigationProvider>(context, listen: false).setIndex(2),
+        onPressed: () =>
+            Provider.of<NavigationProvider>(context, listen: false).setIndex(2),
         tooltip: '下载',
       ),
     ];
@@ -314,6 +494,11 @@ class _FilesPageState extends State<FilesPage> {
 
   List<Widget> _buildMobileActions() {
     return [
+      Consumer<FileManagerProvider>(
+        builder: (context, fileManager, child) {
+          return _buildSortMenu(fileManager);
+        },
+      ),
       Consumer<FileManagerProvider>(
         builder: (context, fileManager, child) {
           final icon = fileManager.viewType == FileViewType.list
@@ -328,13 +513,52 @@ class _FilesPageState extends State<FilesPage> {
                     : FileViewType.list,
               );
             },
-            tooltip: fileManager.viewType == FileViewType.list ? '网格视图' : '列表视图',
+            tooltip: fileManager.viewType == FileViewType.list
+                ? '网格视图'
+                : '列表视图',
           );
         },
       ),
     ];
   }
 
+  Widget _buildSortMenu(FileManagerProvider fileManager) {
+    final allOptions = [
+      for (final field in SortField.values)
+        for (final dir in SortDirection.values) SortOption(field, dir),
+    ];
+
+    return PopupMenuButton<SortOption>(
+      icon: const Icon(LucideIcons.arrowUpDown),
+      tooltip: '排序',
+      position: PopupMenuPosition.under,
+      onSelected: (option) => fileManager.setSortOption(option),
+      itemBuilder: (context) => allOptions.map((option) {
+        final isSelected = fileManager.sortOption == option;
+        return PopupMenuItem<SortOption>(
+          value: option,
+          child: Row(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              if (isSelected)
+                Padding(
+                  padding: const EdgeInsets.only(right: 8),
+                  child: Icon(
+                    Icons.check,
+                    size: 16,
+                    color: Theme.of(context).colorScheme.primary,
+                  ),
+                )
+              else
+                const SizedBox(width: 24),
+              Text(option.menuLabel),
+            ],
+          ),
+        );
+      }).toList(),
+    );
+  }
+
   // ---- SpeedDial FAB ----
 
   Widget _buildSpeedDialFAB(BuildContext context) {
@@ -380,8 +604,16 @@ class _FilesPageState extends State<FilesPage> {
               isDark: isDark,
               colorScheme: colorScheme,
               onTap: () {
-                final fileManager = Provider.of<FileManagerProvider>(context, listen: false);
-                _onFabSubAction(() => FileOperationDialogs.showCreateDialog(context, fileManager));
+                final fileManager = Provider.of<FileManagerProvider>(
+                  context,
+                  listen: false,
+                );
+                _onFabSubAction(
+                  () => FileOperationDialogs.showCreateDialog(
+                    context,
+                    fileManager,
+                  ),
+                );
               },
             ),
             _buildFabSubItem(
@@ -391,7 +623,10 @@ class _FilesPageState extends State<FilesPage> {
               label: '离线下载',
               isDark: isDark,
               colorScheme: colorScheme,
-              onTap: () => _onFabSubAction(() => Navigator.of(context).pushNamed(RouteNames.remoteDownload)),
+              onTap: () => _onFabSubAction(
+                () =>
+                    Navigator.of(context).pushNamed(RouteNames.remoteDownload),
+              ),
             ),
             Consumer<FileManagerProvider>(
               builder: (context, fileManager, _) {
@@ -477,7 +712,10 @@ class _FilesPageState extends State<FilesPage> {
                   child: BackdropFilter(
                     filter: ImageFilter.blur(sigmaX: 10, sigmaY: 10),
                     child: Container(
-                      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 7),
+                      padding: const EdgeInsets.symmetric(
+                        horizontal: 12,
+                        vertical: 7,
+                      ),
                       decoration: BoxDecoration(
                         color: isDark
                             ? Colors.white.withValues(alpha: 0.12)
@@ -558,7 +796,8 @@ class _FilesPageState extends State<FilesPage> {
     final isDesktop = MediaQuery.of(context).size.width >= 1000;
     final child = _buildFileList(context);
 
-    if (!isDesktop || !Platform.isWindows && !Platform.isLinux && !Platform.isMacOS) {
+    if (!isDesktop ||
+        !Platform.isWindows && !Platform.isLinux && !Platform.isMacOS) {
       return child;
     }
 
@@ -582,13 +821,19 @@ class _FilesPageState extends State<FilesPage> {
                     strokeAlign: BorderSide.strokeAlignOutside,
                   ),
                   borderRadius: BorderRadius.circular(8),
-                  color: Theme.of(context).colorScheme.surface.withValues(alpha: 0.85),
+                  color: Theme.of(
+                    context,
+                  ).colorScheme.surface.withValues(alpha: 0.85),
                 ),
                 child: Center(
                   child: Column(
                     mainAxisSize: MainAxisSize.min,
                     children: [
-                      Icon(LucideIcons.upload, size: 48, color: Theme.of(context).colorScheme.primary),
+                      Icon(
+                        LucideIcons.upload,
+                        size: 48,
+                        color: Theme.of(context).colorScheme.primary,
+                      ),
                       const SizedBox(height: 12),
                       Text(
                         '释放文件以上传到当前目录',
@@ -618,8 +863,14 @@ class _FilesPageState extends State<FilesPage> {
     }
     if (files.isEmpty) return;
 
-    final uploadManager = Provider.of<UploadManagerProvider>(context, listen: false);
-    final fileManager = Provider.of<FileManagerProvider>(context, listen: false);
+    final uploadManager = Provider.of<UploadManagerProvider>(
+      context,
+      listen: false,
+    );
+    final fileManager = Provider.of<FileManagerProvider>(
+      context,
+      listen: false,
+    );
     uploadManager.markShouldShowDialog();
     uploadManager.startUpload(files, fileManager.currentPath);
     ToastHelper.info('已添加 ${files.length} 个文件到上传队列');
@@ -649,12 +900,19 @@ class _FilesPageState extends State<FilesPage> {
     );
   }
 
-  Widget _buildErrorView(BuildContext context, FileManagerProvider fileManager) {
+  Widget _buildErrorView(
+    BuildContext context,
+    FileManagerProvider fileManager,
+  ) {
     return Center(
       child: Column(
         mainAxisAlignment: MainAxisAlignment.center,
         children: [
-          Icon(Icons.error_outline, size: 64, color: Theme.of(context).colorScheme.error),
+          Icon(
+            Icons.error_outline,
+            size: 64,
+            color: Theme.of(context).colorScheme.error,
+          ),
           const SizedBox(height: 16),
           Text(
             fileManager.errorMessage!,
@@ -692,20 +950,38 @@ class _FilesPageState extends State<FilesPage> {
   Widget _buildListView(BuildContext context, FileManagerProvider fileManager) {
     final isDesktop = MediaQuery.of(context).size.width >= 1000;
     final showCheckbox = fileManager.hasSelection;
+    final itemCount =
+        fileManager.files.length +
+        (fileManager.hasMore || fileManager.isLoadingMore ? 1 : 0);
 
     return Column(
       children: [
-        if (isDesktop) FileListHeader(showCheckbox: showCheckbox),
+        if (isDesktop)
+          FileListHeader(
+            showCheckbox: showCheckbox,
+            currentSort: fileManager.sortOption,
+            onSort: (option) => fileManager.setSortOption(option),
+          ),
         Expanded(
           child: RefreshIndicator(
             onRefresh: () => _onRefresh(fileManager),
             child: NotificationListener<ScrollNotification>(
               onNotification: _onScrollNotification,
               child: ListView.builder(
-                itemCount: fileManager.files.length,
+                controller: _scrollController,
+                key: PageStorageKey('files_list_${fileManager.currentPath}'),
+                cacheExtent: 900,
+                keyboardDismissBehavior:
+                    ScrollViewKeyboardDismissBehavior.onDrag,
+                itemCount: itemCount,
                 itemBuilder: (context, index) {
+                  if (index >= fileManager.files.length) {
+                    return _buildLoadMoreIndicator(context, fileManager);
+                  }
                   final file = fileManager.files[index];
-                  final isSelected = fileManager.selectedFiles.contains(file.path);
+                  final isSelected = fileManager.selectedFiles.contains(
+                    file.path,
+                  );
 
                   return FileListItem(
                     key: ValueKey('file_${file.id}'),
@@ -727,13 +1003,40 @@ class _FilesPageState extends State<FilesPage> {
                       }
                     },
                     onSelect: () => fileManager.toggleSelection(file.path),
-                    onDownload: !file.isFolder ? () => _downloadFile(context, fileManager, file) : null,
-                    onOpenInBrowser: !file.isFolder ? () => _openInBrowser(context, file) : null,
-                    onRename: () => FileOperationDialogs.showRenameDialog(context, fileManager, file),
-                    onMove: () => FileOperationDialogs.showMoveDialog(context, fileManager, file, false),
-                    onCopy: () => FileOperationDialogs.showMoveDialog(context, fileManager, file, true),
-                    onShare: () => FileOperationDialogs.showShareDialog(context, file),
-                    onDelete: () => FileOperationDialogs.showDeleteSingleConfirmation(context, fileManager, file),
+                    onDownload: !file.isFolder
+                        ? () => _downloadFile(context, fileManager, file)
+                        : null,
+                    onOpenInBrowser: !file.isFolder
+                        ? () => _openInBrowser(context, file)
+                        : null,
+                    onOpenInCloudreveApp: !file.isFolder
+                        ? () => _openInCloudreveApp(context, file)
+                        : null,
+                    onRename: () => FileOperationDialogs.showRenameDialog(
+                      context,
+                      fileManager,
+                      file,
+                    ),
+                    onMove: () => FileOperationDialogs.showMoveDialog(
+                      context,
+                      fileManager,
+                      file,
+                      false,
+                    ),
+                    onCopy: () => FileOperationDialogs.showMoveDialog(
+                      context,
+                      fileManager,
+                      file,
+                      true,
+                    ),
+                    onShare: () =>
+                        FileOperationDialogs.showShareDialog(context, file),
+                    onDelete: () =>
+                        FileOperationDialogs.showDeleteSingleConfirmation(
+                          context,
+                          fileManager,
+                          file,
+                        ),
                     onInfo: () => _showFileInfo(file),
                   );
                 },
@@ -762,15 +1065,23 @@ class _FilesPageState extends State<FilesPage> {
       crossAxisCount = 5;
     }
 
-    final itemWidth = (availableWidth - spacing * (crossAxisCount - 1)) / crossAxisCount;
+    final itemWidth =
+        (availableWidth - spacing * (crossAxisCount - 1)) / crossAxisCount;
     final childAspectRatio = itemWidth / 160;
     final showCheckbox = fileManager.hasSelection;
+    final itemCount =
+        fileManager.files.length +
+        (fileManager.hasMore || fileManager.isLoadingMore ? 1 : 0);
 
     return RefreshIndicator(
       onRefresh: () => _onRefresh(fileManager),
       child: NotificationListener<ScrollNotification>(
         onNotification: _onScrollNotification,
         child: GridView.builder(
+          controller: _scrollController,
+          key: PageStorageKey('files_grid_${fileManager.currentPath}'),
+          cacheExtent: 1100,
+          keyboardDismissBehavior: ScrollViewKeyboardDismissBehavior.onDrag,
           padding: const EdgeInsets.all(8),
           gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
             crossAxisCount: crossAxisCount,
@@ -778,8 +1089,11 @@ class _FilesPageState extends State<FilesPage> {
             crossAxisSpacing: spacing / 2,
             childAspectRatio: childAspectRatio,
           ),
-          itemCount: fileManager.files.length,
+          itemCount: itemCount,
           itemBuilder: (context, index) {
+            if (index >= fileManager.files.length) {
+              return _buildGridLoadMoreIndicator(context, fileManager);
+            }
             final file = fileManager.files[index];
             final isSelected = fileManager.selectedFiles.contains(file.path);
 
@@ -802,13 +1116,39 @@ class _FilesPageState extends State<FilesPage> {
                 }
               },
               onSelect: () => fileManager.toggleSelection(file.path),
-              onDownload: !file.isFolder ? () => _downloadFile(context, fileManager, file) : null,
-              onOpenInBrowser: !file.isFolder ? () => _openInBrowser(context, file) : null,
-              onRename: () => FileOperationDialogs.showRenameDialog(context, fileManager, file),
-              onMove: () => FileOperationDialogs.showMoveDialog(context, fileManager, file, false),
-              onCopy: () => FileOperationDialogs.showMoveDialog(context, fileManager, file, true),
-              onShare: () => FileOperationDialogs.showShareDialog(context, file),
-              onDelete: () => FileOperationDialogs.showDeleteSingleConfirmation(context, fileManager, file),
+              onDownload: !file.isFolder
+                  ? () => _downloadFile(context, fileManager, file)
+                  : null,
+              onOpenInBrowser: !file.isFolder
+                  ? () => _openInBrowser(context, file)
+                  : null,
+              onOpenInCloudreveApp: !file.isFolder
+                  ? () => _openInCloudreveApp(context, file)
+                  : null,
+              onRename: () => FileOperationDialogs.showRenameDialog(
+                context,
+                fileManager,
+                file,
+              ),
+              onMove: () => FileOperationDialogs.showMoveDialog(
+                context,
+                fileManager,
+                file,
+                false,
+              ),
+              onCopy: () => FileOperationDialogs.showMoveDialog(
+                context,
+                fileManager,
+                file,
+                true,
+              ),
+              onShare: () =>
+                  FileOperationDialogs.showShareDialog(context, file),
+              onDelete: () => FileOperationDialogs.showDeleteSingleConfirmation(
+                context,
+                fileManager,
+                file,
+              ),
               onInfo: () => _showFileInfo(file),
             );
           },
@@ -817,6 +1157,62 @@ class _FilesPageState extends State<FilesPage> {
     );
   }
 
+  Widget _buildLoadMoreIndicator(
+    BuildContext context,
+    FileManagerProvider fileManager,
+  ) {
+    if (fileManager.isLoadingMore) {
+      return const Padding(
+        padding: EdgeInsets.symmetric(vertical: 16),
+        child: Center(
+          child: SizedBox(
+            width: 20,
+            height: 20,
+            child: CircularProgressIndicator(strokeWidth: 2),
+          ),
+        ),
+      );
+    }
+    return Padding(
+      padding: const EdgeInsets.symmetric(vertical: 12),
+      child: Center(
+        child: OutlinedButton.icon(
+          onPressed: () => fileManager.loadMoreFiles(),
+          icon: const Icon(LucideIcons.chevronsDown, size: 16),
+          label: const Text('加载更多'),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildGridLoadMoreIndicator(
+    BuildContext context,
+    FileManagerProvider fileManager,
+  ) {
+    if (fileManager.isLoadingMore) {
+      return const Center(
+        child: Padding(
+          padding: EdgeInsets.all(16),
+          child: SizedBox(
+            width: 20,
+            height: 20,
+            child: CircularProgressIndicator(strokeWidth: 2),
+          ),
+        ),
+      );
+    }
+    return Center(
+      child: Padding(
+        padding: const EdgeInsets.all(8),
+        child: OutlinedButton.icon(
+          onPressed: () => fileManager.loadMoreFiles(),
+          icon: const Icon(LucideIcons.chevronsDown, size: 16),
+          label: const Text('加载更多'),
+        ),
+      ),
+    );
+  }
+
   Widget _buildBottomBar(BuildContext context) {
     final screenWidth = MediaQuery.of(context).size.width;
     final isDesktop = screenWidth >= 1000;
@@ -826,33 +1222,34 @@ class _FilesPageState extends State<FilesPage> {
         if (fileManager.hasSelection) {
           return SelectionToolbar(
             selectionCount: fileManager.selectedFiles.length,
+            totalCount: fileManager.files.length,
             onCancel: () => fileManager.clearSelection(),
-            onRename: fileManager.selectedFiles.length == 1
-                ? () => FileOperationDialogs.showRenameDialog(
-                      context,
-                      fileManager,
-                      fileManager.files.firstWhere(
-                        (f) => f.path == fileManager.selectedFiles.first,
-                      ),
-                    )
+            onSelectAll: () => fileManager.selectAll(),
+            onMore: fileManager.selectedFiles.length == 1
+                ? () => _showSelectionMore(
+                    fileManager.files.firstWhere(
+                      (f) => f.path == fileManager.selectedFiles.first,
+                    ),
+                    fileManager,
+                  )
                 : null,
             onMove: () => FileOperationDialogs.showBatchMoveDialog(
-                  context,
-                  fileManager,
-                  fileManager.selectedFiles,
-                  false,
-                ),
+              context,
+              fileManager,
+              fileManager.selectedFiles,
+              false,
+            ),
             onCopy: () => FileOperationDialogs.showBatchMoveDialog(
-                  context,
-                  fileManager,
-                  fileManager.selectedFiles,
-                  true,
-                ),
+              context,
+              fileManager,
+              fileManager.selectedFiles,
+              true,
+            ),
             onDelete: () => FileOperationDialogs.showDeleteConfirmation(
-                  context,
-                  fileManager,
-                  fileManager.selectedFiles,
-                ),
+              context,
+              fileManager,
+              fileManager.selectedFiles,
+            ),
           );
         }
 
@@ -876,11 +1273,17 @@ class _FilesPageState extends State<FilesPage> {
     } else if (FileTypeUtils.isAudio(file.name)) {
       Navigator.of(context).pushNamed(RouteNames.audioPreview, arguments: file);
     } else if (FileTypeUtils.isMarkdown(file.name)) {
-      Navigator.of(context).pushNamed(RouteNames.markdownPreview, arguments: file);
+      Navigator.of(
+        context,
+      ).pushNamed(RouteNames.markdownPreview, arguments: file);
     } else if (FileTypeUtils.isTextCode(file.name)) {
-      Navigator.of(context).pushNamed(RouteNames.documentPreview, arguments: file);
+      Navigator.of(
+        context,
+      ).pushNamed(RouteNames.documentPreview, arguments: file);
     } else {
-      ToastHelper.info('暂不支持预览 ${FileTypeUtils.getFileTypeDescription(file.name)}');
+      ToastHelper.info(
+        '暂不支持预览 ${FileTypeUtils.getFileTypeDescription(file.name)}',
+      );
     }
   }
 
@@ -889,7 +1292,10 @@ class _FilesPageState extends State<FilesPage> {
     FileManagerProvider fileManager,
     FileModel file,
   ) async {
-    final downloadManager = Provider.of<DownloadManagerProvider>(context, listen: false);
+    final downloadManager = Provider.of<DownloadManagerProvider>(
+      context,
+      listen: false,
+    );
     final task = await downloadManager.addDownloadTask(
       fileName: file.name,
       fileUri: file.relativePath,
@@ -935,4 +1341,10 @@ class _FilesPageState extends State<FilesPage> {
       }
     }
   }
+
+  void _openInCloudreveApp(BuildContext context, FileModel file) {
+    Navigator.of(
+      context,
+    ).pushNamed(RouteNames.cloudreveFileApp, arguments: {'file': file});
+  }
 }

lib/presentation/pages/overview/widgets/quick_access_grid.dart

@@ -71,6 +71,7 @@ class QuickAccessGrid extends StatelessWidget {
             child: _QuickAccessButton(
               item: items[index],
               onTap: () => _onTap(context, items[index]),
+              fillHeight: fillHeight,
             ),
           ),
         );
@@ -150,8 +151,13 @@ class QuickAccessGrid extends StatelessWidget {
 class _QuickAccessButton extends StatelessWidget {
   final QuickAccessConfig item;
   final VoidCallback onTap;
+  final bool fillHeight;
 
-  const _QuickAccessButton({required this.item, required this.onTap});
+  const _QuickAccessButton({
+    required this.item,
+    required this.onTap,
+    this.fillHeight = false,
+  });
 
   @override
   Widget build(BuildContext context) {
@@ -179,24 +185,27 @@ class _QuickAccessButton extends StatelessWidget {
           ),
           child: Padding(
             padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 12),
-            child: Row(
-              mainAxisAlignment: MainAxisAlignment.center,
-              children: [
-                Icon(item.icon, color: foreground, size: 22),
-                const SizedBox(width: 9),
-                Flexible(
-                  child: Text(
-                    item.label,
-                    maxLines: 1,
-                    overflow: TextOverflow.ellipsis,
-                    style: TextStyle(
-                      color: foreground,
-                      fontWeight: FontWeight.w800,
-                      fontSize: 14,
+            child: SizedBox(
+              height: fillHeight ? double.infinity : null,
+              child: Row(
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: [
+                  Icon(item.icon, color: foreground, size: 22),
+                  const SizedBox(width: 9),
+                  Flexible(
+                    child: Text(
+                      item.label,
+                      maxLines: 1,
+                      overflow: TextOverflow.ellipsis,
+                      style: TextStyle(
+                        color: foreground,
+                        fontWeight: FontWeight.w800,
+                        fontSize: 14,
+                      ),
                     ),
                   ),
-                ),
-              ],
+                ],
+              ),
             ),
           ),
         ),

lib/presentation/pages/preview/cloudreve_file_app_page.dart

@@ -0,0 +1,355 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_inappwebview/flutter_inappwebview.dart' as desktop;
+import 'package:webview_flutter/webview_flutter.dart' as mobile;
+
+import '../../../data/models/file_model.dart';
+import '../../../services/api_service.dart';
+
+bool get _useDesktopWebView =>
+    !kIsWeb && (Platform.isWindows || Platform.isLinux);
+
+/// 完全交给 Cloudreve 官方 Web 前端处理文件打开。
+///
+/// 这里不再自己读取 file_viewers，也不再自己创建 viewerSession。
+/// Cloudreve 前端本身会根据 `/home?path=...&open=...` 打开对应文件，
+/// 并使用它自己的文件应用、WOPI、Markdown、表格、压缩包、EPUB 等逻辑。
+class CloudreveFileAppPage extends StatefulWidget {
+  final FileModel file;
+  final String? preferredAction;
+
+  const CloudreveFileAppPage({
+    super.key,
+    required this.file,
+    this.preferredAction,
+  });
+
+  @override
+  State<CloudreveFileAppPage> createState() => _CloudreveFileAppPageState();
+}
+
+class _CloudreveFileAppPageState extends State<CloudreveFileAppPage> {
+  mobile.WebViewController? _mobileController;
+  desktop.InAppWebViewController? _desktopController;
+
+  bool _isPreparing = true;
+  bool _sessionInjected = false;
+  int _progress = 0;
+  String? _error;
+  late Uri _targetUri;
+  late Uri _originUri;
+  String? _sessionStateJson;
+
+  @override
+  void initState() {
+    super.initState();
+
+    if (!_useDesktopWebView) {
+      _mobileController = mobile.WebViewController()
+        ..setJavaScriptMode(mobile.JavaScriptMode.unrestricted)
+        ..setBackgroundColor(Colors.transparent)
+        ..setNavigationDelegate(
+          mobile.NavigationDelegate(
+            onProgress: (progress) {
+              if (!mounted) return;
+              setState(() => _progress = progress);
+            },
+            onPageFinished: (_) => _injectSessionAndOpenIfNeeded(),
+            onWebResourceError: (error) {
+              if (!mounted) return;
+              if (error.isForMainFrame == true) {
+                setState(() {
+                  _error = '${error.errorCode}: ${error.description}';
+                });
+              }
+            },
+          ),
+        );
+    }
+
+    _prepareAndOpen();
+  }
+
+  @override
+  void dispose() {
+    _desktopController?.dispose();
+    super.dispose();
+  }
+
+  Future<void> _prepareAndOpen() async {
+    setState(() {
+      _isPreparing = true;
+      _error = null;
+      _progress = 0;
+      _sessionInjected = false;
+      if (_useDesktopWebView) {
+        _desktopController = null;
+      }
+    });
+
+    try {
+      _originUri = _buildOriginUri();
+      _targetUri = _buildCloudreveHomeUri();
+
+      _sessionStateJson = await _buildCloudreveFrontendSessionJson();
+
+      // 先打开同源页面，再注入 localStorage。
+      // 这样 Cloudreve 官方前端可以直接复用 App 的 access_token。
+      await _loadOrigin();
+
+      if (!mounted) return;
+      setState(() => _isPreparing = false);
+    } catch (e) {
+      if (!mounted) return;
+      setState(() {
+        _error = e.toString();
+        _isPreparing = false;
+      });
+    }
+  }
+
+  Uri _buildOriginUri() {
+    final base = Uri.parse(ApiService.instance.dio.options.baseUrl);
+    return Uri(
+      scheme: base.scheme,
+      host: base.host,
+      port: base.hasPort ? base.port : null,
+      path: '/',
+    );
+  }
+
+  Uri _buildCloudreveHomeUri() {
+    final parent = _parentUri(widget.file.relativePath);
+    final openTarget = widget.file.id.isNotEmpty
+        ? widget.file.id
+        : widget.file.relativePath;
+
+    return Uri(
+      scheme: _originUri.scheme,
+      host: _originUri.host,
+      port: _originUri.hasPort ? _originUri.port : null,
+      path: '/home',
+      queryParameters: {
+        'path': parent,
+        'open': openTarget,
+        'size': widget.file.size.toString(),
+      },
+    );
+  }
+
+  String _parentUri(String uri) {
+    final normalized = uri.endsWith('/')
+        ? uri.substring(0, uri.length - 1)
+        : uri;
+    final index = normalized.lastIndexOf('/');
+    if (index <= 'cloudreve://my'.length) {
+      return 'cloudreve://my';
+    }
+    return normalized.substring(0, index);
+  }
+
+  Future<String?> _buildCloudreveFrontendSessionJson() async {
+    final tokenGetter = ApiService.instance.getTokenCallback;
+    final token = tokenGetter == null ? null : await tokenGetter();
+    if (token == null || token.isEmpty) {
+      return null;
+    }
+
+    Map<String, dynamic>? user;
+    try {
+      final response = await ApiService.instance.get<Map<String, dynamic>>(
+        '/user/me',
+      );
+      user = Map<String, dynamic>.from(response);
+    } catch (_) {
+      user = null;
+    }
+
+    final userId = user?['id']?.toString() ?? user?['uid']?.toString() ?? 'app';
+
+    final now = DateTime.now().toUtc();
+    final accessExpires = now.add(const Duration(hours: 2)).toIso8601String();
+    final refreshExpires = now.add(const Duration(hours: 2)).toIso8601String();
+
+    final sessionState = {
+      'current': userId,
+      'sessions': {
+        userId: {
+          'user': user ?? {'id': userId},
+          'token': {
+            'access_token': token,
+            // App 侧暂时没有把 refresh token 暴露给这里。
+            // 给 Cloudreve 前端一个短期可用 session；过期后 WebView 内刷新会要求重新登录。
+            'refresh_token': '',
+            'access_expires': accessExpires,
+            'refresh_expires': refreshExpires,
+          },
+          'settings': {},
+        },
+      },
+      'anonymousSettings': {},
+    };
+
+    return jsonEncode(sessionState);
+  }
+
+  Future<void> _injectSessionAndOpenIfNeeded() async {
+    if (_sessionInjected) return;
+    _sessionInjected = true;
+
+    final sessionJson = _sessionStateJson;
+    final target = _targetUri.toString();
+
+    try {
+      if (sessionJson != null) {
+        final script =
+            '''
+          try {
+            localStorage.setItem('cloudreve_session', ${jsonEncode(sessionJson)});
+          } catch (e) {}
+          window.location.replace(${jsonEncode(target)});
+        ''';
+        await _runJavaScript(script);
+      } else {
+        await _loadTarget();
+      }
+    } catch (e) {
+      if (!mounted) return;
+      setState(() => _error = e.toString());
+    }
+  }
+
+  Future<void> _openTargetAgain() async {
+    _sessionInjected = true;
+    await _loadTarget();
+  }
+
+  Future<void> _reloadWebView() async {
+    if (_useDesktopWebView) {
+      await _desktopController?.reload();
+    } else {
+      await _mobileController?.reload();
+    }
+  }
+
+  Future<void> _loadOrigin() async {
+    if (_useDesktopWebView) {
+      final controller = _desktopController;
+      if (controller == null) return;
+      await _desktopController?.loadUrl(
+        urlRequest: desktop.URLRequest(url: desktop.WebUri.uri(_originUri)),
+      );
+    } else {
+      await _mobileController!.loadRequest(_originUri);
+    }
+  }
+
+  Future<void> _loadTarget() async {
+    if (_useDesktopWebView) {
+      await _desktopController?.loadUrl(
+        urlRequest: desktop.URLRequest(url: desktop.WebUri.uri(_targetUri)),
+      );
+    } else {
+      await _mobileController!.loadRequest(_targetUri);
+    }
+  }
+
+  Future<void> _runJavaScript(String source) async {
+    if (_useDesktopWebView) {
+      await _desktopController?.evaluateJavascript(source: source);
+    } else {
+      await _mobileController!.runJavaScript(source);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(widget.file.name, overflow: TextOverflow.ellipsis),
+        actions: [
+          IconButton(
+            tooltip: '重新打开',
+            icon: const Icon(Icons.open_in_browser),
+            onPressed: _openTargetAgain,
+          ),
+          IconButton(
+            tooltip: '刷新',
+            icon: const Icon(Icons.refresh),
+            onPressed: _reloadWebView,
+          ),
+        ],
+        bottom: PreferredSize(
+          preferredSize: const Size.fromHeight(3),
+          child: _progress > 0 && _progress < 100
+              ? LinearProgressIndicator(value: _progress / 100)
+              : const SizedBox(height: 3),
+        ),
+      ),
+      body: _buildBody(),
+    );
+  }
+
+  Widget _buildBody() {
+    if (_isPreparing) {
+      return const Center(child: CircularProgressIndicator());
+    }
+
+    if (_error != null) {
+      return Center(
+        child: Padding(
+          padding: const EdgeInsets.all(24),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              const Icon(Icons.error_outline, size: 56, color: Colors.red),
+              const SizedBox(height: 16),
+              Text(_error!, textAlign: TextAlign.center),
+              const SizedBox(height: 16),
+              FilledButton.icon(
+                onPressed: _prepareAndOpen,
+                icon: const Icon(Icons.refresh),
+                label: const Text('重试'),
+              ),
+            ],
+          ),
+        ),
+      );
+    }
+
+    if (_useDesktopWebView) {
+      return desktop.InAppWebView(
+        initialSettings: desktop.InAppWebViewSettings(
+          javaScriptEnabled: true,
+          domStorageEnabled: true,
+          isInspectable: true,
+          cacheMode: desktop.CacheMode.LOAD_DEFAULT,
+          supportMultipleWindows: true,
+          transparentBackground: true,
+          supportZoom: true,
+          useHybridComposition: true,
+        ),
+        onWebViewCreated: (controller) async {
+          _desktopController = controller;
+          if (!_isPreparing) {
+            await _loadOrigin();
+          }
+        },
+        onProgressChanged: (_, progress) {
+          if (!mounted) return;
+          setState(() => _progress = progress);
+        },
+        onLoadStop: (_, url) => _injectSessionAndOpenIfNeeded(),
+        onReceivedError: (_, request, error) {
+          if (!mounted || request.isForMainFrame != true) return;
+          setState(() => _error = '${error.type}: ${error.description}');
+        },
+      );
+    }
+
+    return mobile.WebViewWidget(controller: _mobileController!);
+  }
+}

lib/presentation/pages/preview/pdf_preview_page.dart

@@ -114,9 +114,12 @@ class _PdfPreviewPageState extends State<PdfPreviewPage> {
         initialPageNumber: 1,
         params: const PdfViewerParams(
           activeMatchTextColor: Colors.yellow,
-          annotationRenderingMode: PdfAnnotationRenderingMode.annotationAndForms,
-          maxScale: 4.0,
-          minScale: 0.8, // Allow 300% zoom
+          annotationRenderingMode:
+              PdfAnnotationRenderingMode.annotationAndForms,
+          sizeDelegateProvider: PdfViewerSizeDelegateProviderLegacy(
+            maxScale: 4.0,
+            minScale: 0.8,
+          ),
           scaleEnabled: true,
           textSelectionParams: PdfTextSelectionParams(
             enabled: true,

lib/presentation/pages/profile/widgets/quick_functions_section.dart

@@ -1,28 +1,70 @@
+import 'package:cloudreve4_flutter/presentation/providers/navigation_provider.dart';
 import 'package:cloudreve4_flutter/router/app_router.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:lucide_icons/lucide_icons.dart';
+import 'package:provider/provider.dart';
 
 class _QuickFunction {
   final IconData icon;
   final String label;
-  final String route;
+  final String? route;
+  final void Function(BuildContext context)? onTap;
 
   const _QuickFunction({
     required this.icon,
     required this.label,
-    required this.route,
+    this.route,
+    this.onTap,
   });
 }
 
 class QuickFunctionsSection extends StatelessWidget {
   const QuickFunctionsSection({super.key});
 
-  static const _functions = [
-    _QuickFunction(icon: LucideIcons.share2, label: '我的分享', route: RouteNames.share),
-    _QuickFunction(icon: LucideIcons.cloud, label: 'WebDAV', route: RouteNames.webdav),
-    _QuickFunction(icon: LucideIcons.download, label: '离线下载', route: RouteNames.remoteDownload),
-    _QuickFunction(icon: LucideIcons.trash2, label: '回收站', route: RouteNames.recycleBin),
-    _QuickFunction(icon: LucideIcons.settings, label: '设置', route: RouteNames.settings),
+  static final _functions = [
+    _QuickFunction(
+      icon: LucideIcons.share2,
+      label: '我的分享',
+      route: RouteNames.share,
+    ),
+    _QuickFunction(
+      icon: LucideIcons.cloud,
+      label: 'WebDAV',
+      route: RouteNames.webdav,
+    ),
+    _QuickFunction(
+      icon: LucideIcons.download,
+      label: '离线下载',
+      route: RouteNames.remoteDownload,
+    ),
+    _QuickFunction(
+      icon: LucideIcons.trash2,
+      label: '回收站',
+      route: RouteNames.recycleBin,
+    ),
+    _QuickFunction(
+      icon: LucideIcons.refreshCw,
+      label: '文件同步',
+      onTap: (ctx) {
+        final nav = ctx.read<NavigationProvider>();
+        // 桌面端或 Android 平板（宽屏）有同步 Tab，直接切换；手机端跳转同步详情页
+        final isDesktop =
+            defaultTargetPlatform != TargetPlatform.android &&
+            defaultTargetPlatform != TargetPlatform.iOS;
+        final isWideScreen = MediaQuery.of(ctx).size.width >= 800;
+        if (isDesktop || isWideScreen) {
+          nav.setIndex(3);
+        } else {
+          Navigator.of(ctx).pushNamed(RouteNames.syncStatus);
+        }
+      },
+    ),
+    _QuickFunction(
+      icon: LucideIcons.settings,
+      label: '设置',
+      route: RouteNames.settings,
+    ),
   ];
 
   static const double _spacing = 12;
@@ -43,9 +85,12 @@ class QuickFunctionsSection extends StatelessWidget {
             children: [
               Icon(LucideIcons.zap, size: 18, color: theme.colorScheme.primary),
               const SizedBox(width: 8),
-              Text('快捷功能',
-                  style: theme.textTheme.titleMedium
-                      ?.copyWith(fontWeight: FontWeight.w600)),
+              Text(
+                '快捷功能',
+                style: theme.textTheme.titleMedium?.copyWith(
+                  fontWeight: FontWeight.w600,
+                ),
+              ),
             ],
           ),
         ),
@@ -59,7 +104,8 @@ class QuickFunctionsSection extends StatelessWidget {
               if (itemWidth < _minItemWidth) break;
               perRow = next;
             }
-            final itemWidth = (availableWidth - _spacing * (perRow - 1)) / perRow;
+            final itemWidth =
+                (availableWidth - _spacing * (perRow - 1)) / perRow;
 
             return Wrap(
               spacing: _spacing,
@@ -70,7 +116,13 @@ class QuickFunctionsSection extends StatelessWidget {
                   child: _QuickFunctionCard(
                     icon: fn.icon,
                     label: fn.label,
-                    onTap: () => Navigator.of(context).pushNamed(fn.route),
+                    onTap: () {
+                      if (fn.onTap != null) {
+                        fn.onTap!(context);
+                      } else if (fn.route != null) {
+                        Navigator.of(context).pushNamed(fn.route!);
+                      }
+                    },
                   ),
                 );
               }).toList(),
@@ -106,9 +158,7 @@ class _QuickFunctionCardState extends State<_QuickFunctionCard> {
     final colorScheme = theme.colorScheme;
 
     return Card(
-      color: _hovered
-          ? colorScheme.surfaceContainerHighest
-          : null,
+      color: _hovered ? colorScheme.surfaceContainerHighest : null,
       child: InkWell(
         onTap: widget.onTap,
         borderRadius: BorderRadius.circular(12),

lib/presentation/pages/settings/app_settings_page.dart

@@ -2,6 +2,7 @@ import 'dart:io';
 import 'package:flutter/material.dart';
 import 'package:lucide_icons/lucide_icons.dart';
 import 'package:open_file/open_file.dart';
+import 'package:logger/logger.dart' show Level;
 import 'package:provider/provider.dart';
 import '../../../core/constants/storage_keys.dart';
 import '../../../core/utils/app_logger.dart';
@@ -38,6 +39,7 @@ class _AppSettingsPageState extends State<AppSettingsPage> {
   String _logFilePath = '';
   int? _logFileSize;
   String _cacheDirPath = '';
+  Level _logLevel = Level.info;
 
   @override
   void initState() {
@@ -46,6 +48,7 @@ class _AppSettingsPageState extends State<AppSettingsPage> {
     _loadWifiOnlySetting();
     _loadGravatarMirrorSetting();
     _loadLogInfo();
+    _loadLogLevel();
   }
 
   Future<void> _loadCacheSettings() async {
@@ -127,6 +130,15 @@ class _AppSettingsPageState extends State<AppSettingsPage> {
     }
   }
 
+  Future<void> _loadLogLevel() async {
+    final saved = await StorageService.instance.getString(StorageKeys.logLevel);
+    if (saved != null && mounted) {
+      setState(() {
+        _logLevel = _parseLogLevel(saved);
+      });
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -295,6 +307,13 @@ class _AppSettingsPageState extends State<AppSettingsPage> {
                 _buildSection(
                   title: '日志管理',
                   children: [
+                    ListTile(
+                      leading: const Icon(Icons.tune),
+                      title: const Text('日志级别'),
+                      subtitle: Text(_logLevelLabel(_logLevel)),
+                      trailing: const Icon(Icons.chevron_right),
+                      onTap: () => _pickLogLevel(),
+                    ),
                     ListTile(
                       title: const Text('日志文件路径'),
                       subtitle: Text(
@@ -883,4 +902,70 @@ class _AppSettingsPageState extends State<AppSettingsPage> {
       if (mounted) ToastHelper.success('日志已清空');
     }
   }
+
+  String _logLevelLabel(Level level) {
+    return switch (level) {
+      Level.error => 'Error — 仅错误',
+      Level.warning => 'Warning — 错误 + 警告',
+      Level.info => 'Info — 常规信息',
+      Level.debug => 'Debug — 调试信息（含FFI交互）',
+      Level.trace => 'Trace — 全量追踪',
+      _ => level.name,
+    };
+  }
+
+  Level _parseLogLevel(String level) {
+    return switch (level) {
+      'error' => Level.error,
+      'warning' => Level.warning,
+      'info' => Level.info,
+      'debug' => Level.debug,
+      'trace' => Level.trace,
+      _ => Level.info,
+    };
+  }
+
+  Future<void> _pickLogLevel() async {
+    final levels = [
+      (Level.error, 'Error — 仅错误'),
+      (Level.warning, 'Warning — 错误 + 警告'),
+      (Level.info, 'Info — 常规信息'),
+      (Level.debug, 'Debug — 调试信息（含FFI）'),
+      (Level.trace, 'Trace — 全量追踪'),
+    ];
+
+    final result = await showDialog<Level>(
+      context: context,
+      builder: (ctx) => SimpleDialog(
+        title: const Text('日志级别'),
+        children: levels.map((e) {
+          final isSelected = _logLevel == e.$1;
+          return SimpleDialogOption(
+            onPressed: () => Navigator.pop(ctx, e.$1),
+            child: Row(
+              children: [
+                Icon(
+                  isSelected ? Icons.radio_button_checked : Icons.radio_button_unchecked,
+                  size: 20,
+                  color: isSelected ? Theme.of(ctx).colorScheme.primary : Theme.of(ctx).hintColor,
+                ),
+                const SizedBox(width: 8),
+                Flexible(child: Text(e.$2)),
+              ],
+            ),
+          );
+        }).toList(),
+      ),
+    );
+
+    if (result != null && result != _logLevel) {
+      setState(() => _logLevel = result);
+      AppLogger.setLevel(result);
+      await StorageService.instance.setString(
+        StorageKeys.logLevel,
+        result.name,
+      );
+      if (mounted) ToastHelper.success('日志级别已切换为 ${_logLevelLabel(result)}');
+    }
+  }
 }

lib/presentation/pages/settings/settings_page.dart

@@ -1,9 +1,11 @@
 import 'package:flutter/material.dart';
+import 'package:flutter/gestures.dart';
 import 'package:provider/provider.dart';
 import 'package:url_launcher/url_launcher.dart';
 import 'package:package_info_plus/package_info_plus.dart';
 import '../../../data/models/user_model.dart';
 import '../../../data/models/user_setting_model.dart';
+import '../../../services/update_service.dart';
 import '../../../services/user_setting_service.dart';
 import '../../providers/auth_provider.dart';
 import '../../providers/user_setting_provider.dart';
@@ -16,6 +18,8 @@ import 'file_preferences_page.dart';
 import 'app_settings_page.dart';
 import 'credit_history_page.dart';
 import 'quick_access_settings_page.dart';
+import 'network_test_page.dart';
+import '../../../router/app_router.dart';
 
 /// 设置主页
 class SettingsPage extends StatefulWidget {
@@ -82,106 +86,121 @@ class _SettingsPageState extends State<SettingsPage> {
       ),
       body: DesktopConstrained(
         child: ListView(
-        children: [
-          _buildProfileCard(context, user, settings, capacity),
-          const SizedBox(height: 8),
-          _buildSection(
-            title: '账户与安全',
-            children: [
-              _SettingsTile(
-                icon: Icons.person_outline,
-                title: '个人资料',
-                subtitle: '修改昵称、头像',
-                onTap: () => _navigateTo(context, const ProfileEditPage()),
-              ),
-              _SettingsTile(
-                icon: Icons.security_outlined,
-                title: '安全设置',
-                subtitle: _securitySubtitle(settings),
-                onTap: () => _navigateTo(context, const SecuritySettingsPage()),
-              ),
-            ],
-          ),
-          _buildSection(
-            title: '偏好',
-            children: [
-              _SettingsTile(
-                icon: Icons.apps_outlined,
-                title: '快捷入口',
-                subtitle: '自定义概览页快捷目录',
-                onTap: () => _navigateTo(context, const QuickAccessSettingsPage()),
-              ),
-              _SettingsTile(
-                icon: Icons.folder_outlined,
-                title: '文件偏好',
-                subtitle: '版本保留、视图同步、分享可见性',
-                onTap: () => _navigateTo(context, const FilePreferencesPage()),
-              ),
-              _SettingsTile(
-                icon: Icons.tune,
-                title: '应用设置',
-                subtitle: '缓存、主题、语言',
-                onTap: () => _navigateTo(context, const AppSettingsPage()),
-              ),
-            ],
-          ),
-          // 财务区域（有数据时才显示）
-          if (settings != null) ..._buildProSections(context, settings),
-          _buildSection(
-            title: '关于',
-            children: [
-              ListTile(
-                leading: const Icon(Icons.info_outline),
-                title: const Text('应用名称'),
-                subtitle: const Text('公云存储'),
-              ),
-              ListTile(
-                leading: const Icon(Icons.tag),
-                title: const Text('版本号'),
-                subtitle: Text(_appVersion.isEmpty ? '加载中...' : _appVersion),
-              ),
-              ListTile(
-                leading: const Icon(Icons.copyright),
-                title: const Text('License'),
-                subtitle: const Text('AGPL-3.0'),
-              ),
-              ListTile(
-                leading: const Icon(Icons.code),
-                title: const Text('二次开发'),
-                subtitle: const Text('gongyun_app'),
-                trailing: const Icon(Icons.open_in_new, size: 16),
-                onTap: () {
-                  launchUrl(
-                    Uri.parse('https://git.saont.net/gongyun/app'),
-                    mode: LaunchMode.externalApplication,
-                  );
-                },
-              ),
-              ListTile(
-                leading: const Icon(Icons.code),
-                title: const Text('基于'),
-                subtitle: const Text('cloudreve4_flutter'),
-                trailing: const Icon(Icons.open_in_new, size: 16),
-                onTap: () {
-                  launchUrl(
-                    Uri.parse('https://github.com/LimoYuan/cloudreve4_flutter'),
-                    mode: LaunchMode.externalApplication,
-                  );
-                },
-              ),
-            ],
-          ),
-          const SizedBox(height: 24),
-          _buildLogoutButton(context, auth),
-          const SizedBox(height: 32),
-        ],
-      ),
+          children: [
+            _buildProfileCard(context, user, settings, capacity),
+            const SizedBox(height: 8),
+            _buildSection(
+              title: '账户与安全',
+              children: [
+                _SettingsTile(
+                  icon: Icons.person_outline,
+                  title: '个人资料',
+                  subtitle: '修改昵称、头像',
+                  onTap: () => _navigateTo(context, const ProfileEditPage()),
+                ),
+                _SettingsTile(
+                  icon: Icons.security_outlined,
+                  title: '安全设置',
+                  subtitle: _securitySubtitle(settings),
+                  onTap: () =>
+                      _navigateTo(context, const SecuritySettingsPage()),
+                ),
+              ],
+            ),
+            _buildSection(
+              title: '偏好',
+              children: [
+                _SettingsTile(
+                  icon: Icons.sync_outlined,
+                  title: '文件同步',
+                  subtitle: '本地与云端文件自动同步',
+                  onTap: () =>
+                      Navigator.of(context).pushNamed(RouteNames.syncSettings),
+                ),
+                _SettingsTile(
+                  icon: Icons.apps_outlined,
+                  title: '快捷入口',
+                  subtitle: '自定义概览页快捷目录',
+                  onTap: () =>
+                      _navigateTo(context, const QuickAccessSettingsPage()),
+                ),
+                _SettingsTile(
+                  icon: Icons.folder_outlined,
+                  title: '文件偏好',
+                  subtitle: '版本保留、视图同步、分享可见性',
+                  onTap: () =>
+                      _navigateTo(context, const FilePreferencesPage()),
+                ),
+                _SettingsTile(
+                  icon: Icons.tune,
+                  title: '应用设置',
+                  subtitle: '缓存、主题、语言',
+                  onTap: () => _navigateTo(context, const AppSettingsPage()),
+                ),
+                _SettingsTile(
+                  icon: Icons.network_check,
+                  title: '网络测试',
+                  subtitle: '服务连通性测试与自定义线路(会员)',
+                  onTap: () => _openNetworkTest(context),
+                ),
+              ],
+            ),
+            // 财务区域（有数据时才显示）
+            if (settings != null) ..._buildProSections(context, settings),
+            _buildSection(
+              title: '关于',
+              children: [
+                ListTile(
+                  leading: const Icon(Icons.info_outline),
+                  title: const Text('应用名称'),
+                  subtitle: const Text('公云存储'),
+                ),
+                _buildVersionTile(),
+                ListTile(
+                  leading: const Icon(Icons.copyright),
+                  title: const Text('License'),
+                  subtitle: const Text('AGPL-3.0'),
+                ),
+                ListTile(
+                  leading: const Icon(Icons.code),
+                  title: const Text('二次开发'),
+                  subtitle: const Text('gongyun_app'),
+                  trailing: const Icon(Icons.open_in_new, size: 16),
+                  onTap: () {
+                    _openExternalUrl(
+                      Uri.parse('https://git.saont.net/gongyun/app'),
+                    );
+                  },
+                ),
+                ListTile(
+                  leading: const Icon(Icons.code),
+                  title: const Text('基于'),
+                  subtitle: const Text('cloudreve4_flutter'),
+                  trailing: const Icon(Icons.open_in_new, size: 16),
+                  onTap: () {
+                    _openExternalUrl(
+                      Uri.parse(
+                        'https://github.com/LimoYuan/cloudreve4_flutter',
+                      ),
+                    );
+                  },
+                ),
+              ],
+            ),
+            const SizedBox(height: 24),
+            _buildLogoutButton(context, auth),
+            const SizedBox(height: 32),
+          ],
+        ),
       ),
     );
   }
 
   /// 财务区域（存储包、积分、会员）
-  List<Widget> _buildProSections(BuildContext context, UserSettingModel settings) {
+  List<Widget> _buildProSections(
+    BuildContext context,
+    UserSettingModel settings,
+  ) {
     final sections = <Widget>[];
     final hasStoragePacks = settings.storagePacks.isNotEmpty;
     final hasCredit = settings.credit > 0;
@@ -190,40 +209,54 @@ class _SettingsPageState extends State<SettingsPage> {
     if (hasStoragePacks || hasCredit || hasMembership) {
       final children = <Widget>[];
       if (hasMembership) {
-        children.add(ListTile(
-          leading: const Icon(Icons.workspace_premium_outlined),
-          title: const Text('会员'),
-          subtitle: Text('到期: ${_formatDate(settings.groupExpires!)}'),
-          trailing: TextButton(
-            onPressed: () => _cancelMembership(context),
-            child: const Text('取消会员', style: TextStyle(color: Colors.red)),
+        children.add(
+          ListTile(
+            leading: const Icon(Icons.workspace_premium_outlined),
+            title: const Text('会员'),
+            subtitle: Text('到期: ${_formatDate(settings.groupExpires!)}'),
+            trailing: TextButton(
+              onPressed: () => _cancelMembership(context),
+              child: const Text('取消会员', style: TextStyle(color: Colors.red)),
+            ),
           ),
-        ));
+        );
       }
       if (hasStoragePacks) {
-        children.add(ListTile(
-          leading: const Icon(Icons.inventory_2_outlined),
-          title: Text('存储包 (${settings.storagePacks.length})'),
-          subtitle: Text(_storagePackSummary(settings.storagePacks)),
-          trailing: const Icon(Icons.chevron_right),
-          onTap: () => _showStoragePacks(context, settings.storagePacks),
-        ));
+        children.add(
+          ListTile(
+            leading: const Icon(Icons.inventory_2_outlined),
+            title: Text('存储包 (${settings.storagePacks.length})'),
+            subtitle: Text(_storagePackSummary(settings.storagePacks)),
+            trailing: const Icon(Icons.chevron_right),
+            onTap: () => _showStoragePacks(context, settings.storagePacks),
+          ),
+        );
       }
       if (hasCredit) {
-        children.add(ListTile(
-          leading: const Icon(Icons.account_balance_wallet_outlined),
-          title: const Text('积分'),
-          subtitle: Text('${settings.credit} 积分'),
-          trailing: const Icon(Icons.chevron_right),
-          onTap: () => _navigateTo(context, CreditHistoryPage(currentCredit: settings.credit)),
-        ));
+        children.add(
+          ListTile(
+            leading: const Icon(Icons.account_balance_wallet_outlined),
+            title: const Text('积分'),
+            subtitle: Text('${settings.credit} 积分'),
+            trailing: const Icon(Icons.chevron_right),
+            onTap: () => _navigateTo(
+              context,
+              CreditHistoryPage(currentCredit: settings.credit),
+            ),
+          ),
+        );
       }
       sections.add(_buildSection(title: '财务', children: children));
     }
     return sections;
   }
 
-  Widget _buildProfileCard(BuildContext context, UserModel? user, UserSettingModel? settings, UserCapacityModel? capacity) {
+  Widget _buildProfileCard(
+    BuildContext context,
+    UserModel? user,
+    UserSettingModel? settings,
+    UserCapacityModel? capacity,
+  ) {
     final theme = Theme.of(context);
     final colorScheme = theme.colorScheme;
 
@@ -246,17 +279,24 @@ class _SettingsPageState extends State<SettingsPage> {
                       children: [
                         Text(
                           user?.nickname ?? '未登录',
-                          style: theme.textTheme.titleMedium?.copyWith(fontWeight: FontWeight.bold),
+                          style: theme.textTheme.titleMedium?.copyWith(
+                            fontWeight: FontWeight.bold,
+                          ),
                         ),
                         const SizedBox(height: 2),
                         Text(
                           user?.email ?? '',
-                          style: theme.textTheme.bodySmall?.copyWith(color: colorScheme.onSurfaceVariant),
+                          style: theme.textTheme.bodySmall?.copyWith(
+                            color: colorScheme.onSurfaceVariant,
+                          ),
                         ),
                         if (user?.group != null) ...[
                           const SizedBox(height: 4),
                           Container(
-                            padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
+                            padding: const EdgeInsets.symmetric(
+                              horizontal: 8,
+                              vertical: 2,
+                            ),
                             decoration: BoxDecoration(
                               color: colorScheme.primaryContainer,
                               borderRadius: BorderRadius.circular(8),
@@ -309,9 +349,12 @@ class _SettingsPageState extends State<SettingsPage> {
           mainAxisAlignment: MainAxisAlignment.spaceBetween,
           children: [
             Text('存储空间', style: theme.textTheme.bodySmall),
-            Text('$usedText / $totalText', style: theme.textTheme.bodySmall?.copyWith(
-              color: colorScheme.onSurfaceVariant,
-            )),
+            Text(
+              '$usedText / $totalText',
+              style: theme.textTheme.bodySmall?.copyWith(
+                color: colorScheme.onSurfaceVariant,
+              ),
+            ),
           ],
         ),
         const SizedBox(height: 6),
@@ -327,7 +370,10 @@ class _SettingsPageState extends State<SettingsPage> {
     );
   }
 
-  Widget _buildSection({required String title, required List<Widget> children}) {
+  Widget _buildSection({
+    required String title,
+    required List<Widget> children,
+  }) {
     return Padding(
       padding: const EdgeInsets.symmetric(vertical: 4),
       child: Column(
@@ -353,17 +399,43 @@ class _SettingsPageState extends State<SettingsPage> {
     );
   }
 
+  Widget _buildVersionTile() {
+    return AnimatedBuilder(
+      animation: UpdateService.instance,
+      builder: (context, _) {
+        final hasUpdate = UpdateService.instance.hasUpdate;
+        return ListTile(
+          leading: Icon(
+            hasUpdate ? Icons.new_releases_outlined : Icons.tag,
+            color: hasUpdate ? Theme.of(context).colorScheme.primary : null,
+          ),
+          title: const Text('版本号'),
+          subtitle: Text(_appVersion.isEmpty ? '加载中...' : _appVersion),
+          onTap: hasUpdate ? () => _openDownloadsPage() : null,
+          trailing: hasUpdate ? const _UpdateAvailableBadge() : null,
+        );
+      },
+    );
+  }
+
   Widget _buildLogoutButton(BuildContext context, AuthProvider auth) {
     return Padding(
       padding: const EdgeInsets.symmetric(horizontal: 16),
       child: OutlinedButton.icon(
         onPressed: () => _confirmLogout(context, auth),
         icon: Icon(Icons.logout, color: Theme.of(context).colorScheme.error),
-        label: Text('退出登录', style: TextStyle(color: Theme.of(context).colorScheme.error)),
+        label: Text(
+          '退出登录',
+          style: TextStyle(color: Theme.of(context).colorScheme.error),
+        ),
         style: OutlinedButton.styleFrom(
           minimumSize: const Size(double.infinity, 48),
-          side: BorderSide(color: Theme.of(context).colorScheme.error.withValues(alpha: 0.3)),
-          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+          side: BorderSide(
+            color: Theme.of(context).colorScheme.error.withValues(alpha: 0.3),
+          ),
+          shape: RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(12),
+          ),
         ),
       ),
     );
@@ -400,33 +472,47 @@ class _SettingsPageState extends State<SettingsPage> {
               padding: const EdgeInsets.symmetric(vertical: 16),
               child: Text('存储包', style: Theme.of(ctx).textTheme.titleMedium),
             ),
-            ...packs.map((pack) => Card(
-              child: Padding(
-                padding: const EdgeInsets.all(12),
-                child: Column(
-                  crossAxisAlignment: CrossAxisAlignment.start,
-                  children: [
-                    Row(
-                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                      children: [
-                        Text(pack.name, style: Theme.of(ctx).textTheme.titleSmall),
-                        Text(_formatBytes(pack.size), style: Theme.of(ctx).textTheme.labelLarge),
-                      ],
-                    ),
-                    const SizedBox(height: 4),
-                    Text(
-                      '激活: ${_formatDate(pack.activeSince)}'
-                      '${pack.expireAt != null ? " · 到期: ${_formatDate(pack.expireAt!)}" : " · 永久"}',
-                      style: Theme.of(ctx).textTheme.bodySmall,
-                    ),
-                    if (pack.isExpired) ...[
+            ...packs.map(
+              (pack) => Card(
+                child: Padding(
+                  padding: const EdgeInsets.all(12),
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Row(
+                        mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                        children: [
+                          Text(
+                            pack.name,
+                            style: Theme.of(ctx).textTheme.titleSmall,
+                          ),
+                          Text(
+                            _formatBytes(pack.size),
+                            style: Theme.of(ctx).textTheme.labelLarge,
+                          ),
+                        ],
+                      ),
                       const SizedBox(height: 4),
-                      Text('已过期', style: TextStyle(color: Theme.of(ctx).colorScheme.error, fontSize: 12)),
+                      Text(
+                        '激活: ${_formatDate(pack.activeSince)}'
+                        '${pack.expireAt != null ? " · 到期: ${_formatDate(pack.expireAt!)}" : " · 永久"}',
+                        style: Theme.of(ctx).textTheme.bodySmall,
+                      ),
+                      if (pack.isExpired) ...[
+                        const SizedBox(height: 4),
+                        Text(
+                          '已过期',
+                          style: TextStyle(
+                            color: Theme.of(ctx).colorScheme.error,
+                            fontSize: 12,
+                          ),
+                        ),
+                      ],
                     ],
-                  ],
+                  ),
                 ),
               ),
-            )),
+            ),
             const SizedBox(height: 16),
           ],
         ),
@@ -442,10 +528,15 @@ class _SettingsPageState extends State<SettingsPage> {
         title: const Text('取消会员'),
         content: const Text('确定要取消当前会员吗？取消后将失去会员权益。'),
         actions: [
-          TextButton(onPressed: () => Navigator.of(ctx).pop(false), child: const Text('取消')),
+          TextButton(
+            onPressed: () => Navigator.of(ctx).pop(false),
+            child: const Text('取消'),
+          ),
           FilledButton(
             onPressed: () => Navigator.of(ctx).pop(true),
-            style: FilledButton.styleFrom(backgroundColor: Theme.of(ctx).colorScheme.error),
+            style: FilledButton.styleFrom(
+              backgroundColor: Theme.of(ctx).colorScheme.error,
+            ),
             child: const Text('确认取消'),
           ),
         ],
@@ -472,6 +563,59 @@ class _SettingsPageState extends State<SettingsPage> {
     }
   }
 
+  Future<void> _openExternalUrl(Uri uri) async {
+    try {
+      final opened = await launchUrl(uri, mode: LaunchMode.externalApplication);
+      if (!opened) {
+        ToastHelper.failure('无法打开链接: $uri');
+      }
+    } catch (e) {
+      ToastHelper.failure('无法打开链接: $e');
+    }
+  }
+
+  Future<void> _openDownloadsPage() async {
+    try {
+      await UpdateService.instance.openDownloadsPage();
+    } catch (e) {
+      ToastHelper.failure('打开下载页面失败: $e');
+    }
+  }
+
+  Future<void> _openNetworkTest(BuildContext context) async {
+    final agreed = await showDialog<bool>(
+      context: context,
+      barrierDismissible: false,
+      builder: (dialogContext) => AlertDialog(
+        title: const Text('会话信息授权'),
+        content: _NetworkTestConsentText(
+          onOpenPrivacy: () => _openExternalUrl(
+            Uri.parse('https://www.gongyun.org/policy/privacy.html'),
+          ),
+          onOpenTerms: () => _openExternalUrl(
+            Uri.parse('https://www.gongyun.org/policy/terms.html'),
+          ),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(dialogContext).pop(false),
+            child: const Text('不同意'),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.of(dialogContext).pop(true),
+            child: const Text('同意'),
+          ),
+        ],
+      ),
+    );
+
+    if (agreed == true && context.mounted) {
+      await Navigator.of(
+        context,
+      ).push(MaterialPageRoute(builder: (_) => const NetworkTestPage()));
+    }
+  }
+
   Future<void> _confirmLogout(BuildContext context, AuthProvider auth) async {
     final confirmed = await showDialog<bool>(
       context: context,
@@ -479,10 +623,15 @@ class _SettingsPageState extends State<SettingsPage> {
         title: const Text('退出登录'),
         content: const Text('确定要退出当前账号吗？'),
         actions: [
-          TextButton(onPressed: () => Navigator.of(ctx).pop(false), child: const Text('取消')),
+          TextButton(
+            onPressed: () => Navigator.of(ctx).pop(false),
+            child: const Text('取消'),
+          ),
           FilledButton(
             onPressed: () => Navigator.of(ctx).pop(true),
-            style: FilledButton.styleFrom(backgroundColor: Theme.of(context).colorScheme.error),
+            style: FilledButton.styleFrom(
+              backgroundColor: Theme.of(context).colorScheme.error,
+            ),
             child: const Text('退出'),
           ),
         ],
@@ -499,7 +648,9 @@ class _SettingsPageState extends State<SettingsPage> {
   String _formatBytes(int bytes) {
     if (bytes < 1024) return '$bytes B';
     if (bytes < 1024 * 1024) return '${(bytes / 1024).toStringAsFixed(1)} KB';
-    if (bytes < 1024 * 1024 * 1024) return '${(bytes / (1024 * 1024)).toStringAsFixed(1)} MB';
+    if (bytes < 1024 * 1024 * 1024) {
+      return '${(bytes / (1024 * 1024)).toStringAsFixed(1)} MB';
+    }
     return '${(bytes / (1024 * 1024 * 1024)).toStringAsFixed(1)} GB';
   }
 
@@ -508,6 +659,140 @@ class _SettingsPageState extends State<SettingsPage> {
   }
 }
 
+class _UpdateAvailableBadge extends StatefulWidget {
+  const _UpdateAvailableBadge();
+
+  @override
+  State<_UpdateAvailableBadge> createState() => _UpdateAvailableBadgeState();
+}
+
+class _UpdateAvailableBadgeState extends State<_UpdateAvailableBadge>
+    with SingleTickerProviderStateMixin {
+  late final AnimationController _controller;
+  late final Animation<double> _opacity;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = AnimationController(
+      vsync: this,
+      duration: const Duration(milliseconds: 900),
+    )..repeat(reverse: true);
+    _opacity = Tween<double>(
+      begin: 0.3,
+      end: 1,
+    ).animate(CurvedAnimation(parent: _controller, curve: Curves.easeInOut));
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final colorScheme = Theme.of(context).colorScheme;
+    return FadeTransition(
+      opacity: _opacity,
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Container(
+            width: 8,
+            height: 8,
+            decoration: BoxDecoration(
+              color: colorScheme.error,
+              shape: BoxShape.circle,
+            ),
+          ),
+          const SizedBox(width: 6),
+          Text(
+            '发现新版本',
+            style: TextStyle(
+              color: colorScheme.error,
+              fontWeight: FontWeight.w700,
+            ),
+          ),
+          const SizedBox(width: 4),
+          Icon(Icons.chevron_right, size: 18, color: colorScheme.error),
+        ],
+      ),
+    );
+  }
+}
+
+class _NetworkTestConsentText extends StatefulWidget {
+  final VoidCallback onOpenPrivacy;
+  final VoidCallback onOpenTerms;
+
+  const _NetworkTestConsentText({
+    required this.onOpenPrivacy,
+    required this.onOpenTerms,
+  });
+
+  @override
+  State<_NetworkTestConsentText> createState() =>
+      _NetworkTestConsentTextState();
+}
+
+class _NetworkTestConsentTextState extends State<_NetworkTestConsentText> {
+  late final TapGestureRecognizer _privacyRecognizer;
+  late final TapGestureRecognizer _termsRecognizer;
+
+  @override
+  void initState() {
+    super.initState();
+    _privacyRecognizer = TapGestureRecognizer()..onTap = widget.onOpenPrivacy;
+    _termsRecognizer = TapGestureRecognizer()..onTap = widget.onOpenTerms;
+  }
+
+  @override
+  void didUpdateWidget(covariant _NetworkTestConsentText oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    _privacyRecognizer.onTap = widget.onOpenPrivacy;
+    _termsRecognizer.onTap = widget.onOpenTerms;
+  }
+
+  @override
+  void dispose() {
+    _privacyRecognizer.dispose();
+    _termsRecognizer.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final linkStyle = TextStyle(
+      color: Theme.of(context).colorScheme.primary,
+      fontWeight: FontWeight.w700,
+    );
+
+    return Text.rich(
+      TextSpan(
+        children: [
+          const TextSpan(text: '您需同意'),
+          TextSpan(
+            text: '隐私政策',
+            style: linkStyle,
+            recognizer: _privacyRecognizer,
+          ),
+          const TextSpan(text: '与'),
+          TextSpan(
+            text: '用户协议',
+            style: linkStyle,
+            recognizer: _termsRecognizer,
+          ),
+          const TextSpan(
+            text:
+                '方可进入网络测试页。测试会访问公云存储服务，并通过第三方服务 ipwho.is 查询当前网络 IP、AS 与运营商信息；如 ipwho.is 不可用，将使用 ipapi.co 作为备用查询。',
+          ),
+        ],
+      ),
+    );
+  }
+}
+
 class _SettingsTile extends StatelessWidget {
   final IconData icon;
   final String title;

lib/presentation/pages/shell/app_shell.dart

@@ -1,21 +1,52 @@
-import 'package:animations/animations.dart';
+import 'package:cloudreve4_flutter/presentation/providers/admin_provider.dart';
 import 'package:cloudreve4_flutter/presentation/providers/auth_provider.dart';
 import 'package:cloudreve4_flutter/presentation/providers/download_manager_provider.dart';
 import 'package:cloudreve4_flutter/presentation/providers/file_manager_provider.dart';
 import 'package:cloudreve4_flutter/presentation/providers/navigation_provider.dart';
+import 'package:cloudreve4_flutter/presentation/providers/sync_provider.dart';
 import 'package:cloudreve4_flutter/presentation/providers/upload_manager_provider.dart';
+import 'package:cloudreve4_flutter/presentation/providers/user_setting_provider.dart';
+import 'package:cloudreve4_flutter/presentation/widgets/announcement_dialog.dart';
 import 'package:cloudreve4_flutter/presentation/widgets/gesture_handler_mixin.dart';
 import 'package:cloudreve4_flutter/presentation/widgets/glassmorphism_container.dart';
 import 'package:cloudreve4_flutter/presentation/widgets/user_avatar.dart';
+import 'package:cloudreve4_flutter/services/announcement_service.dart';
+import 'package:cloudreve4_flutter/services/dialog_queue_service.dart';
+import 'package:cloudreve4_flutter/services/share_link_service.dart';
+import 'package:cloudreve4_flutter/presentation/pages/share/share_link_page.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:lucide_icons/lucide_icons.dart';
 import 'package:provider/provider.dart';
 import '../../../router/app_router.dart';
 import '../files/files_page.dart';
 import '../overview/overview_page.dart';
+import '../sync/sync_page.dart';
 import '../tasks/tasks_page.dart';
 import '../profile/profile_page.dart';
 
+class _ShellPageSlot extends StatefulWidget {
+  final Widget child;
+
+  const _ShellPageSlot({required this.child});
+
+  @override
+  State<_ShellPageSlot> createState() => _ShellPageSlotState();
+}
+
+class _ShellPageSlotState extends State<_ShellPageSlot>
+    with AutomaticKeepAliveClientMixin {
+  @override
+  bool get wantKeepAlive => true;
+
+  @override
+  Widget build(BuildContext context) {
+    super.build(context);
+    return widget.child;
+  }
+}
+
 class AppShell extends StatefulWidget {
   const AppShell({super.key});
 
@@ -23,30 +54,232 @@ class AppShell extends StatefulWidget {
   State<AppShell> createState() => _AppShellState();
 }
 
-class _AppShellState extends State<AppShell> with GestureHandlerMixin {
+class _AppShellState extends State<AppShell>
+    with GestureHandlerMixin, TickerProviderStateMixin, WidgetsBindingObserver {
+  final Set<int> _visitedPageIndexes = <int>{0};
+  late AnimationController _syncSpinController;
+  String? _lastClipboardShareId;
+  String? _lastUserId;
+  bool _cachedShowSyncTab = false;
+
+  static bool _shouldShowSyncTab(double screenWidth) {
+    if (defaultTargetPlatform != TargetPlatform.android &&
+        defaultTargetPlatform != TargetPlatform.iOS) {
+      return true;
+    }
+    return screenWidth >= 800;
+  }
+
+  List<Widget> _pages(bool showSyncTab) => showSyncTab
+      ? [
+          const OverviewPage(),
+          const FilesPage(),
+          const TasksPage(),
+          const SyncPage(),
+          const ProfilePage(),
+        ]
+      : [
+          const OverviewPage(),
+          const FilesPage(),
+          const TasksPage(),
+          const ProfilePage(),
+        ];
+
+  int _clampedIndex(int index) {
+    final maxIndex = _pages(_cachedShowSyncTab).length - 1;
+    if (index < 0) return 0;
+    if (index > maxIndex) return maxIndex;
+    return index;
+  }
+
+  @override
+  void initState() {
+    super.initState();
+    _syncSpinController = AnimationController(
+      vsync: this,
+      duration: const Duration(seconds: 2),
+    );
+    WidgetsBinding.instance.addObserver(this);
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      _showPostLoginAnnouncement();
+      _checkClipboardShareLink();
+      _lastUserId = context.read<AuthProvider>().user?.id;
+    });
+  }
+
+  @override
+  void dispose() {
+    WidgetsBinding.instance.removeObserver(this);
+    _syncSpinController.dispose();
+    super.dispose();
+  }
+
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    if (state == AppLifecycleState.resumed) {
+      _checkClipboardShareLink();
+    }
+  }
+
+  void _handleTabSelected(int index) {
+    final nav = Provider.of<NavigationProvider>(context, listen: false);
+    nav.setIndex(index);
+
+    final userSetting = Provider.of<UserSettingProvider>(
+      context,
+      listen: false,
+    );
+    if (index == 0 || index == _pages(_cachedShowSyncTab).length - 1) {
+      userSetting.loadCapacity();
+    }
+  }
+
+  void _checkUserChange(AuthProvider auth) {
+    final currentUserId = auth.user?.id;
+    if (_lastUserId != null && currentUserId != _lastUserId) {
+      _lastUserId = currentUserId;
+      Future.microtask(() {
+        if (mounted) _resetProvidersOnUserChange();
+      });
+    } else if (_lastUserId == null && currentUserId != null) {
+      _lastUserId = currentUserId;
+    }
+  }
+
+  void _resetProvidersOnUserChange() {
+    final fileManager = Provider.of<FileManagerProvider>(
+      context,
+      listen: false,
+    );
+    final userSetting = Provider.of<UserSettingProvider>(
+      context,
+      listen: false,
+    );
+    final admin = Provider.of<AdminProvider>(context, listen: false);
+    final sync = Provider.of<SyncProvider>(context, listen: false);
+
+    fileManager.clearFiles();
+    userSetting.clear();
+    admin.clear();
+
+    if (sync.engineInitialized) {
+      sync.resetSync();
+    }
+
+    final nav = Provider.of<NavigationProvider>(context, listen: false);
+    nav.setIndex(0);
+    userSetting.loadCapacity();
+  }
+
+  Future<void> _showPostLoginAnnouncement() async {
+    final authProvider = context.read<AuthProvider>();
+    if (!authProvider.isAuthenticated) return;
+
+    try {
+      final service = AnnouncementService.instance;
+      final announcement = await service.getChangedSiteNotice();
+      if (!mounted || announcement == null) return;
+
+      await DialogQueueService.instance.enqueue<void>(() async {
+        if (!mounted) return;
+
+        await AnnouncementDialog.show(
+          context,
+          title: announcement.title,
+          html: announcement.html,
+          baseUrl: announcement.baseUrl,
+        );
+
+        await service.markDismissed(announcement);
+      });
+    } catch (_) {
+      // Announcement checks should never block the shell.
+    }
+  }
+
+  Future<void> _checkClipboardShareLink() async {
+    await Future<void>.delayed(const Duration(milliseconds: 650));
+    if (!mounted) return;
+
+    try {
+      final data = await Clipboard.getData(Clipboard.kTextPlain);
+      final candidate = ShareLinkService.instance.parseShareLink(data?.text);
+
+      if (candidate == null) return;
+      if (_lastClipboardShareId == candidate.id) return;
+
+      _lastClipboardShareId = candidate.id;
+
+      await DialogQueueService.instance.enqueue<void>(() async {
+        if (!mounted) return;
+
+        final open = await showDialog<bool>(
+          context: context,
+          builder: (ctx) => AlertDialog(
+            title: const Text('检测到分享链接'),
+            content: Text(
+              '是否打开这个文件分享？\n\n${candidate.url}',
+              maxLines: 5,
+              overflow: TextOverflow.ellipsis,
+            ),
+            actions: [
+              TextButton(
+                onPressed: () => Navigator.of(ctx).pop(false),
+                child: const Text('忽略'),
+              ),
+              FilledButton(
+                onPressed: () => Navigator.of(ctx).pop(true),
+                child: const Text('打开'),
+              ),
+            ],
+          ),
+        );
+
+        if (open == true && mounted) {
+          await Navigator.of(context).push(
+            MaterialPageRoute(
+              builder: (_) => ShareLinkPage(candidate: candidate),
+            ),
+          );
+        }
+      });
+    } catch (_) {
+      // Clipboard access failures should not affect the shell.
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     final screenWidth = MediaQuery.of(context).size.width;
     final isDesktop = screenWidth >= 1000;
+    _cachedShowSyncTab = _shouldShowSyncTab(screenWidth);
 
     return PopScope(
       canPop: false,
       onPopInvokedWithResult: (didPop, result) async {
         if (!didPop) {
-          final navProvider = Provider.of<NavigationProvider>(context, listen: false);
-          final fileManager = Provider.of<FileManagerProvider>(context, listen: false);
+          final navProvider = Provider.of<NavigationProvider>(
+            context,
+            listen: false,
+          );
+          final fileManager = Provider.of<FileManagerProvider>(
+            context,
+            listen: false,
+          );
 
           if (navProvider.currentIndex == 1 && fileManager.currentPath != '/') {
             await fileManager.goBack();
-          } else if (navProvider.currentIndex != 0 && navProvider.currentIndex != 1) {
+          } else if (navProvider.currentIndex != 0 &&
+              navProvider.currentIndex != 1) {
             navProvider.setIndex(0);
           } else {
             await checkExitApp(context);
           }
         }
       },
-      child: Consumer<NavigationProvider>(
-        builder: (context, navProvider, _) {
+      child: Consumer2<AuthProvider, NavigationProvider>(
+        builder: (context, auth, navProvider, _) {
+          _checkUserChange(auth);
           if (isDesktop) {
             return _buildDesktopLayout(context, navProvider);
           }
@@ -57,43 +290,75 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
   }
 
   Widget _buildPageContent(BuildContext context, int currentIndex) {
-    const pages = [
-      OverviewPage(),
-      FilesPage(),
-      TasksPage(),
-      ProfilePage(),
-    ];
+    final pages = _pages(_cachedShowSyncTab);
+    final visibleIndex = _clampedIndex(currentIndex);
+    _visitedPageIndexes.add(visibleIndex);
 
-    return PageTransitionSwitcher(
-      duration: const Duration(milliseconds: 300),
-      transitionBuilder: (child, animation, secondaryAnimation) {
-        return SharedAxisTransition(
-          animation: animation,
-          secondaryAnimation: secondaryAnimation,
-          transitionType: SharedAxisTransitionType.horizontal,
-          child: child,
-        );
-      },
-      child: KeyedSubtree(
-        key: ValueKey(currentIndex),
-        child: pages[currentIndex],
+    return RepaintBoundary(
+      child: IndexedStack(
+        index: visibleIndex,
+        children: List.generate(pages.length, (index) {
+          if (!_visitedPageIndexes.contains(index)) {
+            return const SizedBox.shrink();
+          }
+          return _ShellPageSlot(child: pages[index]);
+        }),
       ),
     );
   }
 
-  Widget _buildMobileLayout(BuildContext context, NavigationProvider navProvider) {
+  Widget _buildSyncIcon({required bool isSelected, required double size}) {
+    return Consumer<SyncProvider>(
+      builder: (context, sync, _) {
+        final hasWorkers = sync.activeWorkerCount > 0;
+
+        if (hasWorkers && !_syncSpinController.isAnimating) {
+          _syncSpinController.repeat();
+        } else if (!hasWorkers && _syncSpinController.isAnimating) {
+          _syncSpinController.stop();
+          _syncSpinController.value = 0;
+        }
+
+        final icon = Icon(
+          LucideIcons.refreshCw,
+          size: size,
+          weight: isSelected ? 700 : 400,
+        );
+
+        if (!hasWorkers) return icon;
+
+        return ListenableBuilder(
+          listenable: _syncSpinController,
+          builder: (context, child) {
+            return Transform.rotate(
+              angle: _syncSpinController.value * 2 * 3.14159265,
+              child: child,
+            );
+          },
+          child: icon,
+        );
+      },
+    );
+  }
+
+  Widget _buildMobileLayout(
+    BuildContext context,
+    NavigationProvider navProvider,
+  ) {
     return Scaffold(
       body: _buildPageContent(context, navProvider.currentIndex),
       bottomNavigationBar: GlassmorphismContainer(
         borderRadius: 0,
         child: Consumer2<UploadManagerProvider, DownloadManagerProvider>(
           builder: (context, uploadManager, downloadManager, _) {
-            final activeCount = uploadManager.activeTasks.length + downloadManager.downloadingCount;
+            final activeCount =
+                uploadManager.activeTasks.length +
+                downloadManager.downloadingCount;
 
             return NavigationBar(
               height: 64,
-              selectedIndex: navProvider.currentIndex,
-              onDestinationSelected: (i) => navProvider.setIndex(i),
+              selectedIndex: _clampedIndex(navProvider.currentIndex),
+              onDestinationSelected: _handleTabSelected,
               destinations: [
                 const NavigationDestination(
                   icon: Icon(LucideIcons.layoutDashboard),
@@ -118,6 +383,30 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
                   ),
                   label: '任务',
                 ),
+                if (_cachedShowSyncTab)
+                  NavigationDestination(
+                    icon: Consumer<SyncProvider>(
+                      builder: (context, sync, _) {
+                        final count = sync.activeWorkerCount;
+                        return Badge(
+                          isLabelVisible: count > 0,
+                          label: Text('$count'),
+                          child: _buildSyncIcon(isSelected: false, size: 24),
+                        );
+                      },
+                    ),
+                    selectedIcon: Consumer<SyncProvider>(
+                      builder: (context, sync, _) {
+                        final count = sync.activeWorkerCount;
+                        return Badge(
+                          isLabelVisible: count > 0,
+                          label: Text('$count'),
+                          child: _buildSyncIcon(isSelected: true, size: 24),
+                        );
+                      },
+                    ),
+                    label: '同步',
+                  ),
                 const NavigationDestination(
                   icon: Icon(LucideIcons.user),
                   selectedIcon: Icon(LucideIcons.user, weight: 700),
@@ -131,7 +420,10 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
     );
   }
 
-  Widget _buildDesktopLayout(BuildContext context, NavigationProvider navProvider) {
+  Widget _buildDesktopLayout(
+    BuildContext context,
+    NavigationProvider navProvider,
+  ) {
     final theme = Theme.of(context);
     final authProvider = context.watch<AuthProvider>();
     final user = authProvider.user;
@@ -141,16 +433,19 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
       body: Row(
         children: [
           NavigationRail(
-            selectedIndex: navProvider.currentIndex,
-            onDestinationSelected: (i) => navProvider.setIndex(i),
+            selectedIndex: _clampedIndex(navProvider.currentIndex),
+            onDestinationSelected: _handleTabSelected,
             leading: Padding(
               padding: const EdgeInsets.symmetric(vertical: 16),
               child: GestureDetector(
-                onTap: () => navProvider.setIndex(3),
+                onTap: () =>
+                    navProvider.setIndex(_pages(_cachedShowSyncTab).length - 1),
                 child: Container(
                   decoration: BoxDecoration(
                     shape: BoxShape.circle,
-                    border: navProvider.currentIndex == 3
+                    border:
+                        navProvider.currentIndex ==
+                            _pages(_cachedShowSyncTab).length - 1
                         ? Border.all(
                             color: theme.colorScheme.primary,
                             width: 2.5,
@@ -180,7 +475,9 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
               NavigationRailDestination(
                 icon: Consumer2<UploadManagerProvider, DownloadManagerProvider>(
                   builder: (context, uploadManager, downloadManager, _) {
-                    final activeCount = uploadManager.activeTasks.length + downloadManager.downloadingCount;
+                    final activeCount =
+                        uploadManager.activeTasks.length +
+                        downloadManager.downloadingCount;
                     return Badge(
                       isLabelVisible: activeCount > 0,
                       label: Text('$activeCount'),
@@ -191,6 +488,30 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
                 selectedIcon: const Icon(LucideIcons.listChecks, weight: 700),
                 label: const Text('任务'),
               ),
+              if (_cachedShowSyncTab)
+                NavigationRailDestination(
+                  icon: Consumer<SyncProvider>(
+                    builder: (context, sync, _) {
+                      final count = sync.activeWorkerCount;
+                      return Badge(
+                        isLabelVisible: count > 0,
+                        label: Text('$count'),
+                        child: _buildSyncIcon(isSelected: false, size: 24),
+                      );
+                    },
+                  ),
+                  selectedIcon: Consumer<SyncProvider>(
+                    builder: (context, sync, _) {
+                      final count = sync.activeWorkerCount;
+                      return Badge(
+                        isLabelVisible: count > 0,
+                        label: Text('$count'),
+                        child: _buildSyncIcon(isSelected: true, size: 24),
+                      );
+                    },
+                  ),
+                  label: const Text('同步'),
+                ),
               const NavigationRailDestination(
                 icon: Icon(LucideIcons.user),
                 selectedIcon: Icon(LucideIcons.user, weight: 700),
@@ -206,32 +527,38 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
                     context,
                     icon: LucideIcons.share2,
                     label: '我的分享',
-                    onTap: () => Navigator.of(context).pushNamed(RouteNames.share),
+                    onTap: () =>
+                        Navigator.of(context).pushNamed(RouteNames.share),
                   ),
                   _buildSecondaryNavItem(
                     context,
                     icon: LucideIcons.cloud,
                     label: 'WebDAV',
-                    onTap: () => Navigator.of(context).pushNamed(RouteNames.webdav),
+                    onTap: () =>
+                        Navigator.of(context).pushNamed(RouteNames.webdav),
                   ),
                   _buildSecondaryNavItem(
                     context,
                     icon: LucideIcons.download,
                     label: '离线下载',
-                    onTap: () => Navigator.of(context).pushNamed(RouteNames.remoteDownload),
+                    onTap: () => Navigator.of(
+                      context,
+                    ).pushNamed(RouteNames.remoteDownload),
                   ),
                   _buildSecondaryNavItem(
                     context,
                     icon: LucideIcons.trash2,
                     label: '回收站',
-                    onTap: () => Navigator.of(context).pushNamed(RouteNames.recycleBin),
+                    onTap: () =>
+                        Navigator.of(context).pushNamed(RouteNames.recycleBin),
                   ),
                   const Divider(indent: 12, endIndent: 12),
                   _buildSecondaryNavItem(
                     context,
                     icon: LucideIcons.settings,
                     label: '设置',
-                    onTap: () => Navigator.of(context).pushNamed(RouteNames.settings),
+                    onTap: () =>
+                        Navigator.of(context).pushNamed(RouteNames.settings),
                   ),
                   _buildSecondaryNavItem(
                     context,
@@ -245,9 +572,7 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
             ),
           ),
           const VerticalDivider(thickness: 1, width: 1),
-          Expanded(
-            child: _buildPageContent(context, navProvider.currentIndex),
-          ),
+          Expanded(child: _buildPageContent(context, navProvider.currentIndex)),
         ],
       ),
     );
@@ -278,7 +603,10 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
 
   Future<void> _handleLogout(BuildContext context) async {
     final authProvider = Provider.of<AuthProvider>(context, listen: false);
-    final fileManager = Provider.of<FileManagerProvider>(context, listen: false);
+    final fileManager = Provider.of<FileManagerProvider>(
+      context,
+      listen: false,
+    );
 
     final confirmed = await showDialog<bool>(
       context: context,
@@ -302,7 +630,9 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
       await authProvider.logout();
       fileManager.clearFiles();
       if (context.mounted) {
-        Navigator.of(context).pushNamedAndRemoveUntil(RouteNames.login, (route) => false);
+        Navigator.of(
+          context,
+        ).pushNamedAndRemoveUntil(RouteNames.login, (route) => false);
       }
     }
   }

lib/presentation/pages/splash/splash_page.dart

@@ -5,6 +5,7 @@ import '../../../services/api_service.dart';
 import '../../../services/server_service.dart';
 import '../../../services/storage_service.dart';
 import '../../providers/auth_provider.dart';
+import '../../providers/sync_provider.dart';
 
 /// 启动页
 class SplashPage extends StatefulWidget {
@@ -45,6 +46,16 @@ class _SplashPageState extends State<SplashPage> {
     if (!mounted) return;
 
     if (authProvider.isAuthenticated) {
+      // 自动恢复同步（如果之前处于同步状态）
+      if (!mounted) return;
+      final syncProvider = Provider.of<SyncProvider>(context, listen: false);
+      final token = authProvider.token;
+      await syncProvider.autoResumeIfNeeded(
+        currentAccessToken: token?.accessToken,
+        currentRefreshToken: token?.refreshToken,
+      );
+
+      if (!mounted) return;
       Navigator.of(context).pushReplacementNamed(RouteNames.home);
     } else {
       Navigator.of(context).pushReplacementNamed(RouteNames.login);

lib/presentation/pages/sync/sync_log_viewer_page.dart

@@ -0,0 +1,131 @@
+import 'dart:io';
+import 'package:flutter/material.dart';
+import 'package:path_provider/path_provider.dart';
+import '../../widgets/toast_helper.dart';
+
+/// 同步引擎日志预览页面
+class SyncLogViewerPage extends StatefulWidget {
+  const SyncLogViewerPage({super.key});
+
+  @override
+  State<SyncLogViewerPage> createState() => _SyncLogViewerPageState();
+}
+
+class _SyncLogViewerPageState extends State<SyncLogViewerPage> {
+  String _logContent = '';
+  bool _isLoading = true;
+  final ScrollController _scrollController = ScrollController();
+
+  @override
+  void initState() {
+    super.initState();
+    _loadLog();
+  }
+
+  @override
+  void dispose() {
+    _scrollController.dispose();
+    super.dispose();
+  }
+
+  Future<String> _getSyncLogPath() async {
+    final appDir = await getApplicationSupportDirectory();
+    return '${appDir.path}${Platform.pathSeparator}sync_core${Platform.pathSeparator}logs${Platform.pathSeparator}sync_log.txt';
+  }
+
+  Future<void> _loadLog() async {
+    setState(() => _isLoading = true);
+    try {
+      final path = await _getSyncLogPath();
+      final file = File(path);
+      if (!await file.exists()) {
+        if (mounted) {
+          setState(() {
+            _logContent = '';
+            _isLoading = false;
+          });
+        }
+        return;
+      }
+
+      final lines = await file.readAsLines();
+      const maxLines = 1000;
+      String content;
+      if (lines.length <= maxLines) {
+        content = lines.join('\n');
+      } else {
+        content = '... (仅显示最近 $maxLines 行)\n\n'
+            '${lines.sublist(lines.length - maxLines).join('\n')}';
+      }
+
+      if (mounted) {
+        setState(() {
+          _logContent = content;
+          _isLoading = false;
+        });
+        WidgetsBinding.instance.addPostFrameCallback((_) {
+          if (_scrollController.hasClients) {
+            _scrollController.jumpTo(_scrollController.position.maxScrollExtent);
+          }
+        });
+      }
+    } catch (e) {
+      if (mounted) {
+        setState(() => _isLoading = false);
+        ToastHelper.error('读取同步日志失败：$e');
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final isDark = theme.brightness == Brightness.dark;
+
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('同步日志'),
+        actions: [
+          IconButton(
+            icon: const Icon(Icons.refresh),
+            onPressed: _loadLog,
+            tooltip: '刷新',
+          ),
+        ],
+      ),
+      body: _isLoading
+          ? const Center(child: CircularProgressIndicator())
+          : _logContent.isEmpty
+              ? Center(
+                  child: Column(
+                    mainAxisAlignment: MainAxisAlignment.center,
+                    children: [
+                      Icon(Icons.description_outlined,
+                          size: 48, color: theme.hintColor.withValues(alpha: 0.4)),
+                      const SizedBox(height: 16),
+                      Text('暂无同步日志', style: TextStyle(color: theme.hintColor)),
+                    ],
+                  ),
+                )
+              : Container(
+                  color: isDark ? const Color(0xFF1E1E1E) : const Color(0xFFF5F5F5),
+                  child: Scrollbar(
+                    controller: _scrollController,
+                    child: SingleChildScrollView(
+                      controller: _scrollController,
+                      padding: const EdgeInsets.all(12),
+                      child: SelectableText(
+                        _logContent,
+                        style: TextStyle(
+                          fontFamily: 'SourceCodePro',
+                          fontSize: 13,
+                          height: 1.5,
+                          color: isDark ? Colors.grey[300] : Colors.grey[900],
+                        ),
+                      ),
+                    ),
+                  ),
+                ),
+    );
+  }
+}

lib/presentation/pages/sync/sync_page.dart

@@ -0,0 +1,795 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:provider/provider.dart';
+import 'package:lucide_icons/lucide_icons.dart';
+
+import '../../../data/models/sync_task_model.dart';
+import '../../providers/sync_provider.dart';
+import '../../widgets/sync_stats_card.dart';
+import '../../widgets/toast_helper.dart';
+import 'sync_settings_page.dart';
+
+/// 同步 Tab 页 - 展示实时同步状态、活跃任务和已完成任务
+class SyncPage extends StatefulWidget {
+  const SyncPage({super.key});
+
+  @override
+  State<SyncPage> createState() => _SyncPageState();
+}
+
+class _SyncPageState extends State<SyncPage> {
+  // 展开的任务 ID
+  final Set<String> _expandedTasks = {};
+  // 正在加载详情的任务 ID
+  final Set<String> _loadingDetails = {};
+
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      context.read<SyncProvider>().loadRecentTasks();
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final sync = context.watch<SyncProvider>();
+    final theme = Theme.of(context);
+
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('文件同步'),
+        actions: [
+          IconButton(
+            icon: const Icon(Icons.settings_outlined),
+            onPressed: () => _navigateToSettings(),
+            tooltip: '同步设置',
+          ),
+        ],
+      ),
+      body: RefreshIndicator(
+        onRefresh: () async {
+          final sync = context.read<SyncProvider>();
+          sync.invalidateAllTaskDetails();
+          await sync.loadRecentTasks();
+        },
+        child: ListView(
+          padding: const EdgeInsets.symmetric(vertical: 8),
+          children: [
+            Padding(
+              padding: const EdgeInsets.symmetric(horizontal: 5),
+              child: LayoutBuilder(
+                builder: (context, constraints) {
+                  final isWide = constraints.maxWidth >= 800;
+                  final statsCard = SyncStatsCard(
+                    uploaded: sync.cumUploaded,
+                    downloaded: sync.cumDownloaded,
+                    renamed: sync.cumRenamed,
+                    moved: sync.cumMoved,
+                    conflicts: sync.cumConflicts,
+                    failed: sync.cumFailed,
+                    deletedLocal: sync.cumDeletedLocal,
+                    deletedRemote: sync.cumDeletedRemote,
+                    skipped: sync.cumSkipped,
+                  );
+
+                  if (isWide) {
+                    return IntrinsicHeight(
+                      child: Row(
+                        crossAxisAlignment: CrossAxisAlignment.stretch,
+                        children: [
+                          Expanded(child: _buildStatusHeaderCard(sync, theme)),
+                          const SizedBox(width: 8),
+                          Expanded(child: statsCard),
+                        ],
+                      ),
+                    );
+                  }
+                  return Column(
+                    children: [
+                      _buildStatusHeaderCard(sync, theme),
+                      const SizedBox(height: 8),
+                      statsCard,
+                    ],
+                  );
+                },
+              ),
+            ),
+            const SizedBox(height: 8),
+            _buildActiveTasksSection(sync, theme),
+            const SizedBox(height: 8),
+            _buildCompletedTasksSection(sync, theme),
+            const SizedBox(height: 32),
+          ],
+        ),
+      ),
+    );
+  }
+
+  void _navigateToSettings() {
+    Navigator.of(
+      context,
+    ).push(MaterialPageRoute(builder: (_) => const SyncSettingsPage()));
+  }
+
+  Widget _buildStatusHeaderCard(SyncProvider sync, ThemeData theme) {
+    final isActive = sync.isActive;
+    final isPaused = sync.isPaused;
+    final hasError = sync.hasError;
+
+    Color statusColor;
+    String statusText;
+
+    if (isActive) {
+      statusColor = theme.colorScheme.primary;
+      statusText = _syncModeLabel(sync);
+    } else if (isPaused) {
+      statusColor = Colors.orange;
+      statusText = '已暂停';
+    } else if (hasError) {
+      statusColor = theme.colorScheme.error;
+      statusText = '同步错误';
+    } else if (sync.state == SyncState.stopped) {
+      statusColor = theme.disabledColor;
+      statusText = '已停止';
+    } else {
+      statusColor = theme.disabledColor;
+      statusText = '未启动';
+    }
+
+    return Container(
+      width: double.infinity,
+      decoration: BoxDecoration(
+        gradient: LinearGradient(
+          begin: Alignment.topLeft,
+          end: Alignment.bottomRight,
+          colors: [
+            theme.colorScheme.primaryContainer.withValues(alpha: 0.3),
+            theme.colorScheme.tertiaryContainer.withValues(alpha: 0.3),
+          ],
+        ),
+        borderRadius: BorderRadius.circular(24),
+      ),
+      padding: const EdgeInsets.fromLTRB(24, 16, 24, 28),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Center(
+            child: Text(
+              statusText,
+              style: theme.textTheme.titleMedium?.copyWith(
+                fontWeight: FontWeight.w600,
+                color: statusColor,
+              ),
+            ),
+          ),
+          if (sync.errorMessage != null) ...[
+            const SizedBox(height: 4),
+            Center(
+              child: Text(
+                sync.errorMessage!,
+                style: theme.textTheme.bodySmall?.copyWith(
+                  color: theme.colorScheme.error,
+                ),
+                maxLines: 1,
+                overflow: TextOverflow.ellipsis,
+              ),
+            ),
+          ],
+          const SizedBox(height: 16),
+          Row(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              SizedBox(
+                width: 96,
+                height: 96,
+                child: Stack(
+                  alignment: Alignment.center,
+                  children: [
+                    if (isActive)
+                      SizedBox(
+                        width: 96,
+                        height: 96,
+                        child: CircularProgressIndicator(
+                          value: sync.activeTotalCount > 0
+                              ? sync.activeProgress
+                              : null,
+                          strokeWidth: 6,
+                          strokeCap: StrokeCap.round,
+                          backgroundColor:
+                              theme.colorScheme.surfaceContainerHighest,
+                          valueColor: AlwaysStoppedAnimation<Color>(
+                            statusColor,
+                          ),
+                        ),
+                      )
+                    else
+                      SizedBox(
+                        width: 96,
+                        height: 96,
+                        child: CircularProgressIndicator(
+                          value: 0,
+                          strokeWidth: 6,
+                          backgroundColor:
+                              theme.colorScheme.surfaceContainerHighest,
+                          valueColor: AlwaysStoppedAnimation<Color>(
+                            statusColor,
+                          ),
+                        ),
+                      ),
+                    Column(
+                      mainAxisSize: MainAxisSize.min,
+                      children: [
+                        if (isActive && sync.activeTotalCount > 0)
+                          Text(
+                            '${(sync.activeProgress * 100).toInt()}%',
+                            style: theme.textTheme.titleMedium?.copyWith(
+                              fontWeight: FontWeight.bold,
+                              color: statusColor,
+                            ),
+                          ),
+                        Text(
+                          isActive
+                              ? (sync.state == SyncState.continuous
+                                    ? '持续同步'
+                                    : '同步中')
+                              : isPaused
+                              ? '已暂停'
+                              : hasError
+                              ? '错误'
+                              : '未启动',
+                          style: theme.textTheme.bodySmall?.copyWith(
+                            color: theme.hintColor,
+                            fontSize: 11,
+                          ),
+                        ),
+                      ],
+                    ),
+                  ],
+                ),
+              ),
+              const SizedBox(width: 24),
+              IntrinsicWidth(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    _buildStatRow(
+                      Icons.file_upload_outlined,
+                      '${sync.cumUploaded}',
+                      '已上传',
+                      Colors.blue,
+                      theme,
+                    ),
+                    const SizedBox(height: 8),
+                    _buildStatRow(
+                      Icons.file_download_outlined,
+                      '${sync.cumDownloaded}',
+                      '已下载',
+                      Colors.green,
+                      theme,
+                    ),
+                    const SizedBox(height: 8),
+                    _buildStatRow(
+                      Icons.warning_amber_outlined,
+                      '${sync.cumConflicts}',
+                      '冲突',
+                      Colors.orange,
+                      theme,
+                    ),
+                  ],
+                ),
+              ),
+            ],
+          ),
+          if (isActive && sync.currentFile != null) ...[
+            const SizedBox(height: 12),
+            Text(
+              sync.currentFile!,
+              style: theme.textTheme.bodySmall?.copyWith(
+                color: theme.hintColor,
+              ),
+              overflow: TextOverflow.ellipsis,
+              maxLines: 1,
+            ),
+          ],
+          if (isActive && sync.activeTotalCount > 0) ...[
+            const SizedBox(height: 8),
+            Text(
+              '${sync.activeCompletedCount} / ${sync.activeTotalCount} 文件',
+              style: theme.textTheme.bodySmall?.copyWith(
+                color: theme.hintColor,
+              ),
+            ),
+          ],
+          const SizedBox(height: 16),
+          Row(
+            children: [
+              if (!sync.isActive && !sync.isPaused)
+                Expanded(
+                  child: FilledButton.icon(
+                    onPressed: () => _navigateToSettings(),
+                    icon: const Icon(Icons.play_arrow, size: 18),
+                    label: const Text('开始同步'),
+                  ),
+                ),
+              if (sync.isActive)
+                Expanded(
+                  child: OutlinedButton.icon(
+                    onPressed: () => sync.pause(),
+                    icon: const Icon(Icons.pause, size: 18),
+                    label: const Text('暂停'),
+                  ),
+                ),
+              if (sync.isPaused)
+                Expanded(
+                  child: FilledButton.icon(
+                    onPressed: () => sync.resume(),
+                    icon: const Icon(Icons.play_arrow, size: 18),
+                    label: const Text('恢复'),
+                  ),
+                ),
+              if (sync.isActive || sync.isPaused) ...[
+                const SizedBox(width: 8),
+                Expanded(
+                  child: OutlinedButton.icon(
+                    onPressed: () => _stopSync(sync),
+                    icon: const Icon(Icons.stop, size: 18),
+                    label: const Text('停止'),
+                    style: OutlinedButton.styleFrom(
+                      foregroundColor: theme.colorScheme.error,
+                    ),
+                  ),
+                ),
+              ],
+            ],
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildStatRow(
+    IconData icon,
+    String value,
+    String label,
+    Color color,
+    ThemeData theme,
+  ) {
+    return Row(
+      children: [
+        Icon(icon, size: 16, color: color),
+        const SizedBox(width: 8),
+        Text(
+          value,
+          style: theme.textTheme.titleSmall?.copyWith(
+            fontWeight: FontWeight.bold,
+          ),
+        ),
+        const SizedBox(width: 4),
+        Text(
+          label,
+          style: theme.textTheme.bodySmall?.copyWith(color: theme.hintColor),
+        ),
+      ],
+    );
+  }
+
+  String _syncModeLabel(SyncProvider sync) {
+    final mode = sync.persistedConfig?.syncMode ?? 'full';
+    return switch (mode) {
+      'full' => '全量同步中',
+      'upload_only' => '仅上传中',
+      'download_only' => '仅下载中',
+      'album' => '相册同步中',
+      'mirror_wcf' => '镜像同步中',
+      _ => '同步中',
+    };
+  }
+
+  Widget _buildActiveTasksSection(SyncProvider sync, ThemeData theme) {
+    final tasks = sync.activeTasks;
+
+    return _buildTaskSection(
+      theme: theme,
+      title: '正在同步',
+      icon: LucideIcons.loader,
+      tasks: tasks,
+      emptyText: '暂无正在进行的同步任务',
+    );
+  }
+
+  Widget _buildCompletedTasksSection(SyncProvider sync, ThemeData theme) {
+    final tasks = sync.recentTasks
+        .where(
+          (t) =>
+              (t.status == 'completed' ||
+                  t.status == 'failed' ||
+                  t.status == 'cancelled') &&
+              t.totalCount > 0,
+        )
+        .toList();
+
+    return _buildTaskSection(
+      theme: theme,
+      title: '已完成',
+      icon: LucideIcons.checkCircle2,
+      tasks: tasks,
+      emptyText: '暂无已完成的同步任务',
+    );
+  }
+
+  Widget _buildTaskSection({
+    required ThemeData theme,
+    required String title,
+    required IconData icon,
+    required List<SyncTaskModel> tasks,
+    required String emptyText,
+  }) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 5, vertical: 8),
+          child: Row(
+            children: [
+              Icon(icon, size: 18, color: theme.colorScheme.primary),
+              const SizedBox(width: 8),
+              Text(
+                title,
+                style: theme.textTheme.titleSmall?.copyWith(
+                  fontWeight: FontWeight.bold,
+                  color: theme.colorScheme.primary,
+                ),
+              ),
+            ],
+          ),
+        ),
+        if (tasks.isEmpty)
+          Card(
+            margin: const EdgeInsets.symmetric(horizontal: 5),
+            child: Padding(
+              padding: const EdgeInsets.all(24),
+              child: Center(
+                child: Text(
+                  emptyText,
+                  style: TextStyle(color: theme.hintColor),
+                ),
+              ),
+            ),
+          )
+        else
+          ...tasks.map((task) => _buildTaskCard(task, theme)),
+      ],
+    );
+  }
+
+  Widget _buildTaskCard(SyncTaskModel task, ThemeData theme) {
+    final isExpanded = _expandedTasks.contains(task.id);
+
+    return Card(
+      margin: const EdgeInsets.symmetric(horizontal: 5, vertical: 2),
+      child: Column(
+        children: [
+          InkWell(
+            onTap: () => _toggleTaskExpand(task.id),
+            child: Padding(
+              padding: const EdgeInsets.symmetric(horizontal: 5, vertical: 12),
+              child: Row(
+                children: [
+                  GestureDetector(
+                    onTap: () {
+                      Clipboard.setData(ClipboardData(text: task.id));
+                      ToastHelper.success('已复制任务 ID');
+                    },
+                    child: Row(
+                      mainAxisSize: MainAxisSize.min,
+                      children: [
+                        SizedBox(
+                          width: 72,
+                          child: Text(
+                            task.shortId,
+                            style: theme.textTheme.bodySmall?.copyWith(
+                              fontFamily: 'monospace',
+                              color: theme.hintColor,
+                            ),
+                          ),
+                        ),
+                        Icon(Icons.copy, size: 14, color: theme.hintColor),
+                      ],
+                    ),
+                  ),
+                  Expanded(
+                    child: Row(
+                      children: [
+                        Container(
+                          padding: const EdgeInsets.symmetric(
+                            horizontal: 8,
+                            vertical: 2,
+                          ),
+                          decoration: BoxDecoration(
+                            color: _statusColor(
+                              task.status,
+                              theme,
+                            ).withValues(alpha: 0.1),
+                            borderRadius: BorderRadius.circular(4),
+                          ),
+                          child: Text(
+                            task.statusLabel,
+                            style: theme.textTheme.bodySmall?.copyWith(
+                              color: _statusColor(task.status, theme),
+                              fontWeight: FontWeight.w600,
+                            ),
+                          ),
+                        ),
+                        const SizedBox(width: 12),
+                        Text(
+                          '${task.completedCount}/${task.totalCount}',
+                          style: theme.textTheme.bodySmall,
+                        ),
+                        if (task.failedCount > 0) ...[
+                          const SizedBox(width: 8),
+                          Text(
+                            '失败${task.failedCount}',
+                            style: theme.textTheme.bodySmall?.copyWith(
+                              color: theme.colorScheme.error,
+                            ),
+                          ),
+                        ],
+                      ],
+                    ),
+                  ),
+                  Icon(
+                    isExpanded ? Icons.expand_less : Icons.expand_more,
+                    size: 20,
+                    color: theme.hintColor,
+                  ),
+                ],
+              ),
+            ),
+          ),
+          if (isExpanded) _buildTaskDetailList(task, theme),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildTaskDetailList(SyncTaskModel task, ThemeData theme) {
+    final sync = context.watch<SyncProvider>();
+    final items = sync.getCachedTaskDetail(task.id);
+
+    if (_loadingDetails.contains(task.id)) {
+      return const Padding(
+        padding: EdgeInsets.all(16),
+        child: Center(
+          child: SizedBox(
+            width: 20,
+            height: 20,
+            child: CircularProgressIndicator(strokeWidth: 2),
+          ),
+        ),
+      );
+    }
+
+    if (items == null || items.isEmpty) {
+      return Padding(
+        padding: const EdgeInsets.all(16),
+        child: Text('暂无任务项', style: TextStyle(color: theme.hintColor)),
+      );
+    }
+
+    final hasMore = sync.hasMoreTaskDetail(task.id);
+
+    return Column(
+      children: [
+        const Divider(height: 1, indent: 16, endIndent: 16),
+        Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 5, vertical: 6),
+          child: Row(
+            children: [
+              SizedBox(
+                width: 70,
+                child: Text(
+                  '操作',
+                  style: theme.textTheme.labelSmall?.copyWith(
+                    color: theme.hintColor,
+                  ),
+                ),
+              ),
+              Expanded(
+                child: Text(
+                  '文件名',
+                  style: theme.textTheme.labelSmall?.copyWith(
+                    color: theme.hintColor,
+                  ),
+                ),
+              ),
+              SizedBox(
+                width: 55,
+                child: Text(
+                  '状态',
+                  style: theme.textTheme.labelSmall?.copyWith(
+                    color: theme.hintColor,
+                  ),
+                ),
+              ),
+              SizedBox(
+                width: 110,
+                child: Text(
+                  '时间',
+                  style: theme.textTheme.labelSmall?.copyWith(
+                    color: theme.hintColor,
+                  ),
+                ),
+              ),
+            ],
+          ),
+        ),
+        ...items.map((item) => _buildTaskItemRow(item, theme)),
+        if (hasMore)
+          Padding(
+            padding: const EdgeInsets.symmetric(vertical: 8),
+            child: TextButton.icon(
+              onPressed: () => _loadMoreDetail(task.id),
+              icon: const Icon(Icons.expand_more, size: 16),
+              label: const Text('加载更多'),
+            ),
+          ),
+        const SizedBox(height: 4),
+      ],
+    );
+  }
+
+  Widget _buildTaskItemRow(SyncTaskItemModel item, ThemeData theme) {
+    final timeStr = _formatTime(item.updatedAt);
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 5, vertical: 3),
+      child: Row(
+        children: [
+          SizedBox(
+            width: 70,
+            child: Container(
+              padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 1),
+              decoration: BoxDecoration(
+                color: _actionColor(
+                  item.actionType,
+                  theme,
+                ).withValues(alpha: 0.1),
+                borderRadius: BorderRadius.circular(3),
+              ),
+              child: Text(
+                item.actionLabel,
+                style: theme.textTheme.bodySmall?.copyWith(
+                  fontSize: 11,
+                  color: _actionColor(item.actionType, theme),
+                ),
+              ),
+            ),
+          ),
+          const SizedBox(width: 8),
+          Expanded(
+            child: Text(
+              item.filename,
+              style: theme.textTheme.bodySmall,
+              overflow: TextOverflow.ellipsis,
+              maxLines: 1,
+            ),
+          ),
+          SizedBox(
+            width: 55,
+            child: Text(
+              item.statusLabel,
+              style: theme.textTheme.bodySmall?.copyWith(
+                color: _itemStatusColor(item.status, theme),
+              ),
+            ),
+          ),
+          SizedBox(
+            width: 110,
+            child: Text(
+              timeStr,
+              style: theme.textTheme.bodySmall?.copyWith(
+                fontFamily: 'monospace',
+                fontSize: 11,
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Color _statusColor(String status, ThemeData theme) {
+    return switch (status) {
+      'running' => theme.colorScheme.primary,
+      'completed' => Colors.green,
+      'failed' => theme.colorScheme.error,
+      'cancelled' => theme.hintColor,
+      _ => theme.hintColor,
+    };
+  }
+
+  Color _actionColor(String actionType, ThemeData theme) {
+    return switch (actionType) {
+      'upload' => Colors.blue,
+      'download' => Colors.green,
+      'create_placeholder' => Colors.teal,
+      'delete_local' || 'delete_remote' => theme.colorScheme.error,
+      'rename' || 'move' => Colors.orange,
+      'conflict_resolve' => Colors.purple,
+      _ => theme.colorScheme.primary,
+    };
+  }
+
+  Color _itemStatusColor(String status, ThemeData theme) {
+    return switch (status) {
+      'completed' => Colors.green,
+      'failed' => theme.colorScheme.error,
+      'running' => theme.colorScheme.primary,
+      _ => theme.hintColor,
+    };
+  }
+
+  String _formatTime(String isoTime) {
+    try {
+      final dt = DateTime.parse(isoTime).toLocal();
+      return '${dt.year}/${dt.month.toString().padLeft(2, '0')}/${dt.day.toString().padLeft(2, '0')} '
+          '${dt.hour.toString().padLeft(2, '0')}:${dt.minute.toString().padLeft(2, '0')}:${dt.second.toString().padLeft(2, '0')}';
+    } catch (_) {
+      return isoTime;
+    }
+  }
+
+  void _toggleTaskExpand(String taskId) {
+    final sync = context.read<SyncProvider>();
+    if (_expandedTasks.contains(taskId)) {
+      setState(() => _expandedTasks.remove(taskId));
+      sync.unwatchTaskDetail(taskId);
+      return;
+    }
+
+    setState(() => _expandedTasks.add(taskId));
+    sync.watchTaskDetail(taskId);
+
+    if (sync.getCachedTaskDetail(taskId) == null &&
+        !_loadingDetails.contains(taskId)) {
+      setState(() => _loadingDetails.add(taskId));
+      sync.getTaskDetail(taskId).whenComplete(() {
+        if (mounted) {
+          setState(() => _loadingDetails.remove(taskId));
+        }
+      });
+    }
+  }
+
+  void _loadMoreDetail(String taskId) {
+    final sync = context.read<SyncProvider>();
+    sync.loadMoreTaskDetail(taskId);
+  }
+
+  Future<void> _stopSync(SyncProvider sync) async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (ctx) => AlertDialog(
+        title: const Text('停止同步'),
+        content: const Text('确定要停止文件同步吗？'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(ctx, false),
+            child: const Text('取消'),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.pop(ctx, true),
+            style: FilledButton.styleFrom(
+              backgroundColor: Theme.of(ctx).colorScheme.error,
+            ),
+            child: const Text('停止'),
+          ),
+        ],
+      ),
+    );
+
+    if (confirmed == true) {
+      await sync.stop();
+    }
+  }
+}

lib/presentation/pages/sync/sync_page_android.dart

@@ -0,0 +1,768 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+import '../../../data/models/sync_task_model.dart';
+import '../../providers/sync_provider.dart';
+import '../../widgets/sync_stats_card.dart';
+import 'sync_settings_page.dart';
+
+/// 移动端同步详情页面 - 展示实时同步状态和任务列表
+class SyncPageAndroid extends StatefulWidget {
+  const SyncPageAndroid({super.key});
+
+  @override
+  State<SyncPageAndroid> createState() => _SyncPageAndroidState();
+}
+
+class _SyncPageAndroidState extends State<SyncPageAndroid> {
+  final Set<String> _expandedTasks = {};
+  final Set<String> _loadingDetails = {};
+
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      context.read<SyncProvider>().loadRecentTasks();
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final sync = context.watch<SyncProvider>();
+    final theme = Theme.of(context);
+
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('文件同步'),
+        actions: [
+          IconButton(
+            icon: const Icon(Icons.settings_outlined),
+            onPressed: () => _navigateToSettings(),
+            tooltip: '同步设置',
+          ),
+        ],
+      ),
+      body: RefreshIndicator(
+        onRefresh: () async {
+          final sync = context.read<SyncProvider>();
+          sync.invalidateAllTaskDetails();
+          await sync.loadRecentTasks();
+        },
+        child: CustomScrollView(
+          physics: const AlwaysScrollableScrollPhysics(),
+          slivers: [
+            SliverToBoxAdapter(
+              child: Padding(
+                padding: const EdgeInsets.fromLTRB(16, 8, 16, 0),
+                child: _buildHeader(sync, theme),
+              ),
+            ),
+            SliverToBoxAdapter(
+              child: Padding(
+                padding: const EdgeInsets.fromLTRB(16, 12, 16, 0),
+                child: SyncStatsCard(
+                  uploaded: sync.cumUploaded,
+                  downloaded: sync.cumDownloaded,
+                  renamed: sync.cumRenamed,
+                  moved: sync.cumMoved,
+                  conflicts: sync.cumConflicts,
+                  failed: sync.cumFailed,
+                  deletedLocal: sync.cumDeletedLocal,
+                  deletedRemote: sync.cumDeletedRemote,
+                  skipped: sync.cumSkipped,
+                ),
+              ),
+            ),
+            SliverToBoxAdapter(
+              child: Padding(
+                padding: const EdgeInsets.fromLTRB(20, 24, 20, 12),
+                child: Row(
+                  children: [
+                    Icon(
+                      Icons.sync_outlined,
+                      size: 18,
+                      color: theme.colorScheme.primary,
+                    ),
+                    const SizedBox(width: 8),
+                    Text(
+                      '同步任务',
+                      style: theme.textTheme.titleSmall?.copyWith(
+                        fontWeight: FontWeight.bold,
+                        color: theme.colorScheme.primary,
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            ),
+            _buildTaskList(sync, theme),
+            const SliverToBoxAdapter(child: SizedBox(height: 100)),
+          ],
+        ),
+      ),
+    );
+  }
+
+  void _navigateToSettings() {
+    Navigator.of(
+      context,
+    ).push(MaterialPageRoute(builder: (_) => const SyncSettingsPage()));
+  }
+
+  Widget _buildHeader(SyncProvider sync, ThemeData theme) {
+    final isActive = sync.isActive;
+    final isPaused = sync.isPaused;
+    final hasError = sync.hasError;
+
+    Color statusColor;
+    String statusText;
+
+    if (isActive) {
+      statusColor = theme.colorScheme.primary;
+      statusText = _syncModeLabel(sync);
+    } else if (isPaused) {
+      statusColor = Colors.orange;
+      statusText = '已暂停';
+    } else if (hasError) {
+      statusColor = theme.colorScheme.error;
+      statusText = '同步错误';
+    } else if (sync.state == SyncState.stopped) {
+      statusColor = theme.disabledColor;
+      statusText = '已停止';
+    } else {
+      statusColor = theme.disabledColor;
+      statusText = '未启动';
+    }
+
+    return Container(
+      width: double.infinity,
+      decoration: BoxDecoration(
+        gradient: LinearGradient(
+          begin: Alignment.topLeft,
+          end: Alignment.bottomRight,
+          colors: [
+            theme.colorScheme.primaryContainer.withValues(alpha: 0.3),
+            theme.colorScheme.tertiaryContainer.withValues(alpha: 0.3),
+          ],
+        ),
+        borderRadius: BorderRadius.circular(24),
+      ),
+      padding: const EdgeInsets.fromLTRB(24, 16, 24, 28),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // 顶部：状态文字居中
+          Center(
+            child: Text(
+              statusText,
+              style: theme.textTheme.titleMedium?.copyWith(
+                fontWeight: FontWeight.w600,
+                color: statusColor,
+              ),
+            ),
+          ),
+          const SizedBox(height: 16),
+          // 中间：左侧旋转圆 + 右侧统计
+          Row(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              // 左侧：旋转圆形指示器
+              SizedBox(
+                width: 96,
+                height: 96,
+                child: Stack(
+                  alignment: Alignment.center,
+                  children: [
+                    if (isActive)
+                      SizedBox(
+                        width: 96,
+                        height: 96,
+                        child: CircularProgressIndicator(
+                          value: sync.activeTotalCount > 0
+                              ? sync.activeProgress
+                              : null,
+                          strokeWidth: 6,
+                          strokeCap: StrokeCap.round,
+                          backgroundColor:
+                              theme.colorScheme.surfaceContainerHighest,
+                          valueColor: AlwaysStoppedAnimation<Color>(
+                            statusColor,
+                          ),
+                        ),
+                      )
+                    else
+                      SizedBox(
+                        width: 96,
+                        height: 96,
+                        child: CircularProgressIndicator(
+                          value: 0,
+                          strokeWidth: 6,
+                          backgroundColor:
+                              theme.colorScheme.surfaceContainerHighest,
+                          valueColor: AlwaysStoppedAnimation<Color>(
+                            statusColor,
+                          ),
+                        ),
+                      ),
+                    // 中心文字
+                    Column(
+                      mainAxisSize: MainAxisSize.min,
+                      children: [
+                        if (isActive && sync.activeTotalCount > 0)
+                          Text(
+                            '${(sync.activeProgress * 100).toInt()}%',
+                            style: theme.textTheme.titleMedium?.copyWith(
+                              fontWeight: FontWeight.bold,
+                              color: statusColor,
+                            ),
+                          ),
+                        Text(
+                          isActive
+                              ? (sync.state == SyncState.continuous
+                                    ? '持续同步'
+                                    : '同步中')
+                              : isPaused
+                              ? '已暂停'
+                              : hasError
+                              ? '错误'
+                              : '未启动',
+                          style: theme.textTheme.bodySmall?.copyWith(
+                            color: theme.hintColor,
+                            fontSize: 11,
+                          ),
+                        ),
+                      ],
+                    ),
+                  ],
+                ),
+              ),
+              const SizedBox(width: 24),
+              // 右侧：统计行
+              IntrinsicWidth(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    _buildStatRow(
+                      Icons.file_upload_outlined,
+                      '${sync.cumUploaded}',
+                      '已上传',
+                      Colors.blue,
+                      theme,
+                    ),
+                    const SizedBox(height: 8),
+                    _buildStatRow(
+                      Icons.file_download_outlined,
+                      '${sync.cumDownloaded}',
+                      '已下载',
+                      Colors.green,
+                      theme,
+                    ),
+                    const SizedBox(height: 8),
+                    _buildStatRow(
+                      Icons.warning_amber_outlined,
+                      '${sync.cumConflicts}',
+                      '冲突',
+                      Colors.orange,
+                      theme,
+                    ),
+                  ],
+                ),
+              ),
+            ],
+          ),
+          if (isActive && sync.currentFile != null) ...[
+            const SizedBox(height: 12),
+            Text(
+              sync.currentFile!,
+              style: theme.textTheme.bodySmall?.copyWith(
+                color: theme.hintColor,
+              ),
+              overflow: TextOverflow.ellipsis,
+              maxLines: 1,
+            ),
+          ],
+          if (isActive && sync.activeTotalCount > 0) ...[
+            const SizedBox(height: 8),
+            Text(
+              '${sync.activeCompletedCount} / ${sync.activeTotalCount} 文件',
+              style: theme.textTheme.bodySmall?.copyWith(
+                color: theme.hintColor,
+              ),
+            ),
+          ],
+          const SizedBox(height: 16),
+          // 操作按钮
+          Row(
+            children: [
+              if (!sync.isActive && !sync.isPaused)
+                Expanded(
+                  child: FilledButton.icon(
+                    onPressed: () => _navigateToSettings(),
+                    icon: const Icon(Icons.play_arrow, size: 18),
+                    label: const Text('开始同步'),
+                  ),
+                ),
+              if (sync.isActive)
+                Expanded(
+                  child: OutlinedButton.icon(
+                    onPressed: () => sync.pause(),
+                    icon: const Icon(Icons.pause, size: 18),
+                    label: const Text('暂停'),
+                  ),
+                ),
+              if (sync.isPaused)
+                Expanded(
+                  child: FilledButton.icon(
+                    onPressed: () => sync.resume(),
+                    icon: const Icon(Icons.play_arrow, size: 18),
+                    label: const Text('恢复'),
+                  ),
+                ),
+              if (sync.isActive || isPaused) ...[
+                const SizedBox(width: 8),
+                Expanded(
+                  child: OutlinedButton.icon(
+                    onPressed: () => _stopSync(sync),
+                    icon: const Icon(Icons.stop, size: 18),
+                    label: const Text('停止'),
+                    style: OutlinedButton.styleFrom(
+                      foregroundColor: theme.colorScheme.error,
+                    ),
+                  ),
+                ),
+              ],
+            ],
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildStatRow(
+    IconData icon,
+    String value,
+    String label,
+    Color color,
+    ThemeData theme,
+  ) {
+    return Row(
+      children: [
+        Icon(icon, size: 16, color: color),
+        const SizedBox(width: 8),
+        Text(
+          value,
+          style: theme.textTheme.titleSmall?.copyWith(
+            fontWeight: FontWeight.bold,
+          ),
+        ),
+        const SizedBox(width: 4),
+        Text(
+          label,
+          style: theme.textTheme.bodySmall?.copyWith(color: theme.hintColor),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildTaskList(SyncProvider sync, ThemeData theme) {
+    // 活跃任务 + 已完成任务
+    final activeTasks = sync.activeTasks;
+    final completedTasks = sync.recentTasks
+        .where(
+          (t) =>
+              (t.status == 'completed' ||
+                  t.status == 'failed' ||
+                  t.status == 'cancelled') &&
+              t.totalCount > 0,
+        )
+        .toList();
+    final allTasks = [...activeTasks, ...completedTasks];
+
+    if (allTasks.isEmpty) {
+      return SliverFillRemaining(
+        hasScrollBody: false,
+        child: Center(
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Icon(Icons.cloud_off, size: 48, color: theme.hintColor),
+              const SizedBox(height: 12),
+              Text('暂无同步任务', style: TextStyle(color: theme.hintColor)),
+            ],
+          ),
+        ),
+      );
+    }
+
+    return SliverPadding(
+      padding: const EdgeInsets.symmetric(horizontal: 16),
+      sliver: SliverList(
+        delegate: SliverChildBuilderDelegate(
+          (context, index) => _buildTaskCard(allTasks[index], sync, theme),
+          childCount: allTasks.length,
+        ),
+      ),
+    );
+  }
+
+  Widget _buildTaskCard(
+    SyncTaskModel task,
+    SyncProvider sync,
+    ThemeData theme,
+  ) {
+    final isExpanded = _expandedTasks.contains(task.id);
+    final isRunning = task.status == 'running';
+    final isFailed = task.status == 'failed';
+    final isCompleted = task.status == 'completed';
+
+    Color statusColor = switch (task.status) {
+      'running' => theme.colorScheme.primary,
+      'completed' => Colors.green,
+      'failed' => theme.colorScheme.error,
+      'cancelled' => theme.hintColor,
+      _ => theme.hintColor,
+    };
+
+    return Container(
+      margin: const EdgeInsets.only(bottom: 12),
+      decoration: BoxDecoration(
+        color: theme.colorScheme.surface,
+        borderRadius: BorderRadius.circular(20),
+        boxShadow: [
+          BoxShadow(
+            color: Colors.black.withValues(alpha: 0.03),
+            blurRadius: 8,
+            offset: const Offset(0, 2),
+          ),
+        ],
+      ),
+      child: Column(
+        children: [
+          InkWell(
+            onTap: () => _toggleTaskExpand(task.id),
+            borderRadius: BorderRadius.circular(20),
+            child: Padding(
+              padding: const EdgeInsets.all(16),
+              child: Row(
+                children: [
+                  // 状态图标
+                  Container(
+                    padding: const EdgeInsets.all(10),
+                    decoration: BoxDecoration(
+                      color: statusColor.withValues(alpha: 0.1),
+                      borderRadius: BorderRadius.circular(14),
+                    ),
+                    child: Icon(
+                      isRunning
+                          ? Icons.sync
+                          : isFailed
+                          ? Icons.error_outline
+                          : isCompleted
+                          ? Icons.check_circle_outline
+                          : Icons.cloud_off,
+                      color: statusColor,
+                      size: 20,
+                    ),
+                  ),
+                  const SizedBox(width: 14),
+                  // 任务信息
+                  Expanded(
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Row(
+                          children: [
+                            Container(
+                              padding: const EdgeInsets.symmetric(
+                                horizontal: 8,
+                                vertical: 2,
+                              ),
+                              decoration: BoxDecoration(
+                                color: statusColor.withValues(alpha: 0.1),
+                                borderRadius: BorderRadius.circular(6),
+                              ),
+                              child: Text(
+                                task.statusLabel,
+                                style: theme.textTheme.bodySmall?.copyWith(
+                                  color: statusColor,
+                                  fontWeight: FontWeight.w600,
+                                ),
+                              ),
+                            ),
+                            const SizedBox(width: 8),
+                            Text(
+                              task.triggerLabel,
+                              style: theme.textTheme.bodySmall?.copyWith(
+                                color: theme.hintColor,
+                              ),
+                            ),
+                          ],
+                        ),
+                        const SizedBox(height: 8),
+                        // 进度条
+                        ClipRRect(
+                          borderRadius: BorderRadius.circular(4),
+                          child: LinearProgressIndicator(
+                            value: isRunning && task.totalCount > 0
+                                ? task.progress
+                                : (isCompleted ? 1.0 : null),
+                            minHeight: 4,
+                            backgroundColor:
+                                theme.colorScheme.surfaceContainerHighest,
+                            valueColor: AlwaysStoppedAnimation<Color>(
+                              statusColor,
+                            ),
+                          ),
+                        ),
+                        const SizedBox(height: 4),
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                          children: [
+                            Text(
+                              '${task.completedCount}/${task.totalCount}',
+                              style: theme.textTheme.bodySmall?.copyWith(
+                                fontSize: 11,
+                              ),
+                            ),
+                            if (task.failedCount > 0)
+                              Text(
+                                '失败${task.failedCount}',
+                                style: theme.textTheme.bodySmall?.copyWith(
+                                  fontSize: 11,
+                                  color: theme.colorScheme.error,
+                                ),
+                              ),
+                          ],
+                        ),
+                      ],
+                    ),
+                  ),
+                  const SizedBox(width: 8),
+                  Icon(
+                    isExpanded ? Icons.expand_less : Icons.expand_more,
+                    size: 20,
+                    color: theme.hintColor,
+                  ),
+                ],
+              ),
+            ),
+          ),
+          if (isExpanded) _buildTaskDetailList(task, sync, theme),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildTaskDetailList(
+    SyncTaskModel task,
+    SyncProvider sync,
+    ThemeData theme,
+  ) {
+    final items = sync.getCachedTaskDetail(task.id);
+
+    if (_loadingDetails.contains(task.id)) {
+      return const Padding(
+        padding: EdgeInsets.all(16),
+        child: Center(
+          child: SizedBox(
+            width: 20,
+            height: 20,
+            child: CircularProgressIndicator(strokeWidth: 2),
+          ),
+        ),
+      );
+    }
+
+    if (items == null || items.isEmpty) {
+      return Padding(
+        padding: const EdgeInsets.all(16),
+        child: Text('暂无任务项', style: TextStyle(color: theme.hintColor)),
+      );
+    }
+
+    final hasMore = sync.hasMoreTaskDetail(task.id);
+
+    return Column(
+      children: [
+        Divider(
+          height: 1,
+          indent: 16,
+          endIndent: 16,
+          color: theme.dividerColor,
+        ),
+        ...items.map((item) => _buildTaskItemTile(item, theme)),
+        if (hasMore)
+          Padding(
+            padding: const EdgeInsets.symmetric(vertical: 8),
+            child: TextButton.icon(
+              onPressed: () => _loadMoreDetail(task.id),
+              icon: const Icon(Icons.expand_more, size: 16),
+              label: const Text('加载更多'),
+            ),
+          ),
+        const SizedBox(height: 4),
+      ],
+    );
+  }
+
+  Widget _buildTaskItemTile(SyncTaskItemModel item, ThemeData theme) {
+    Color actionColor = switch (item.actionType) {
+      'upload' => Colors.blue,
+      'download' => Colors.green,
+      'create_placeholder' => Colors.teal,
+      'delete_local' || 'delete_remote' => theme.colorScheme.error,
+      'rename' || 'move' => Colors.orange,
+      'conflict_resolve' => Colors.purple,
+      _ => theme.colorScheme.primary,
+    };
+
+    Color itemStatusColor = switch (item.status) {
+      'completed' => Colors.green,
+      'failed' => theme.colorScheme.error,
+      'running' => theme.colorScheme.primary,
+      _ => theme.hintColor,
+    };
+
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 4),
+      child: Row(
+        children: [
+          // 操作类型图标
+          Container(
+            padding: const EdgeInsets.all(6),
+            decoration: BoxDecoration(
+              color: actionColor.withValues(alpha: 0.1),
+              borderRadius: BorderRadius.circular(8),
+            ),
+            child: Icon(
+              item.actionType == 'upload'
+                  ? Icons.file_upload_outlined
+                  : item.actionType == 'download'
+                  ? Icons.file_download_outlined
+                  : item.actionType == 'delete_local' ||
+                        item.actionType == 'delete_remote'
+                  ? Icons.delete_outline
+                  : item.actionType == 'rename'
+                  ? Icons.edit_outlined
+                  : item.actionType == 'move'
+                  ? Icons.drive_file_move_outline
+                  : Icons.sync_outlined,
+              color: actionColor,
+              size: 14,
+            ),
+          ),
+          const SizedBox(width: 10),
+          // 文件名 + 状态
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  item.filename,
+                  style: theme.textTheme.bodySmall?.copyWith(
+                    fontWeight: FontWeight.w500,
+                  ),
+                  overflow: TextOverflow.ellipsis,
+                  maxLines: 1,
+                ),
+                if (item.errorMessage != null)
+                  Text(
+                    item.errorMessage!,
+                    style: theme.textTheme.bodySmall?.copyWith(
+                      fontSize: 10,
+                      color: theme.colorScheme.error,
+                    ),
+                    maxLines: 1,
+                    overflow: TextOverflow.ellipsis,
+                  ),
+              ],
+            ),
+          ),
+          const SizedBox(width: 8),
+          // 状态标签
+          Container(
+            padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
+            decoration: BoxDecoration(
+              color: itemStatusColor.withValues(alpha: 0.1),
+              borderRadius: BorderRadius.circular(4),
+            ),
+            child: Text(
+              item.statusLabel,
+              style: theme.textTheme.bodySmall?.copyWith(
+                fontSize: 10,
+                color: itemStatusColor,
+                fontWeight: FontWeight.w600,
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  String _syncModeLabel(SyncProvider sync) {
+    final mode = sync.persistedConfig?.syncMode ?? 'full';
+    return switch (mode) {
+      'full' => '全量同步中',
+      'upload_only' => '仅上传中',
+      'download_only' => '仅下载中',
+      'album_upload' => '相册上传中',
+      'album_download' => '相册下载中',
+      'mirror_wcf' => '镜像同步中',
+      _ => '同步中',
+    };
+  }
+
+  void _toggleTaskExpand(String taskId) {
+    final sync = context.read<SyncProvider>();
+    if (_expandedTasks.contains(taskId)) {
+      setState(() => _expandedTasks.remove(taskId));
+      sync.unwatchTaskDetail(taskId);
+      return;
+    }
+
+    setState(() => _expandedTasks.add(taskId));
+    sync.watchTaskDetail(taskId);
+
+    if (sync.getCachedTaskDetail(taskId) == null &&
+        !_loadingDetails.contains(taskId)) {
+      setState(() => _loadingDetails.add(taskId));
+      sync.getTaskDetail(taskId).whenComplete(() {
+        if (mounted) {
+          setState(() => _loadingDetails.remove(taskId));
+        }
+      });
+    }
+  }
+
+  void _loadMoreDetail(String taskId) {
+    context.read<SyncProvider>().loadMoreTaskDetail(taskId);
+  }
+
+  Future<void> _stopSync(SyncProvider sync) async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (ctx) => AlertDialog(
+        title: const Text('停止同步'),
+        content: const Text('确定要停止文件同步吗？'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(ctx, false),
+            child: const Text('取消'),
+          ),
+          FilledButton(
+            onPressed: () => Navigator.pop(ctx, true),
+            style: FilledButton.styleFrom(
+              backgroundColor: Theme.of(ctx).colorScheme.error,
+            ),
+            child: const Text('停止'),
+          ),
+        ],
+      ),
+    );
+
+    if (confirmed == true) {
+      await sync.stop();
+    }
+  }
+}

lib/presentation/providers/admin_provider.dart

@@ -63,10 +63,7 @@ class AdminProvider extends ChangeNotifier {
   Future<void> loadAll() async {
     _setState(AdminState.loading);
     try {
-      await Future.wait([
-        loadGroups(),
-        loadUsers(),
-      ]);
+      await Future.wait([loadGroups(), loadUsers()]);
       _setState(AdminState.idle);
     } catch (e) {
       _errorMessage = e.toString();
@@ -213,6 +210,19 @@ class AdminProvider extends ChangeNotifier {
 
   bool isUserSelected(int userId) => _selectedUserIds.contains(userId);
 
+  /// 清除管理员数据（切换账号时调用）
+  void clear() {
+    _groups = [];
+    _users = [];
+    _groupsPagination = null;
+    _usersPagination = null;
+    _selectedUserIds.clear();
+    _isSelectingUsers = false;
+    _errorMessage = null;
+    _state = AdminState.idle;
+    notifyListeners();
+  }
+
   void _setState(AdminState state) {
     _state = state;
     notifyListeners();

lib/presentation/providers/file_manager_provider.dart

@@ -3,7 +3,10 @@ import 'dart:async';
 import 'package:flutter/foundation.dart';
 import '../../data/models/file_model.dart';
 import '../../services/file_service.dart';
+import '../../services/storage_service.dart';
 import '../../services/thumbnail_service.dart';
+import '../../core/constants/sort_options.dart';
+import '../../core/constants/storage_keys.dart';
 import '../../core/utils/app_logger.dart';
 import '../../core/utils/file_utils.dart';
 
@@ -15,7 +18,11 @@ class RefreshResult {
   final int added;
   final int removed;
   final int updated;
-  const RefreshResult({required this.added, required this.removed, required this.updated});
+  const RefreshResult({
+    required this.added,
+    required this.removed,
+    required this.updated,
+  });
   bool get isUnchanged => added == 0 && removed == 0 && updated == 0;
 }
 
@@ -25,8 +32,11 @@ class FileManagerProvider extends ChangeNotifier {
   List<FileModel> _files = [];
   List<String> _selectedFiles = [];
   FileViewType _viewType = FileViewType.list;
+  SortOption _sortOption = SortOption.default_;
   bool _isLoading = false;
+  bool _isLoadingMore = false;
   bool _hasMore = true;
+  String? _nextPageToken;
   String? _errorMessage;
   String? _contextHint;
   String? _highlightPath;
@@ -36,15 +46,21 @@ class FileManagerProvider extends ChangeNotifier {
   List<FileModel> get files => _files;
   List<String> get selectedFiles => _selectedFiles;
   FileViewType get viewType => _viewType;
+  SortOption get sortOption => _sortOption;
   bool get isLoading => _isLoading;
+  bool get isLoadingMore => _isLoadingMore;
   bool get hasMore => _hasMore;
+  String? get nextPageToken => _nextPageToken;
   String? get errorMessage => _errorMessage;
   String? get contextHint => _contextHint;
   bool get hasSelection => _selectedFiles.isNotEmpty;
   String? get highlightPath => _highlightPath;
 
   /// 加载文件列表
-  Future<void> loadFiles({bool refresh = false, Duration timeout = const Duration(seconds: 5)}) async {
+  Future<void> loadFiles({
+    bool refresh = false,
+    Duration timeout = const Duration(seconds: 5),
+  }) async {
     if (refresh) {
       _selectedFiles.clear();
     }
@@ -52,13 +68,18 @@ class FileManagerProvider extends ChangeNotifier {
     setState(() {
       _isLoading = true;
       _errorMessage = null;
+      _nextPageToken = null;
     });
 
     try {
-      final response = await FileService().listFiles(
-        uri: _currentPath,
-        pageSize: 50,
-      ).timeout(timeout);
+      final response = await FileService()
+          .listFiles(
+            uri: _currentPath,
+            pageSize: 50,
+            orderBy: _sortOption.field.apiKey,
+            orderDirection: _sortOption.direction.apiKey,
+          )
+          .timeout(timeout);
 
       final List<dynamic> filesData = response['files'] as List<dynamic>? ?? [];
       final pagination = response['pagination'] as Map<String, dynamic>? ?? {};
@@ -67,7 +88,8 @@ class FileManagerProvider extends ChangeNotifier {
         _files = filesData
             .map((f) => FileModel.fromJson(f as Map<String, dynamic>))
             .toList();
-        _hasMore = pagination['next_token'] != null;
+        _nextPageToken = pagination['next_token'] as String?;
+        _hasMore = _nextPageToken != null;
         _contextHint = response['context_hint'] as String?;
       });
     } on TimeoutException {
@@ -87,12 +109,62 @@ class FileManagerProvider extends ChangeNotifier {
     }
   }
 
+  /// 加载更多文件（分页）
+  Future<void> loadMoreFiles({
+    Duration timeout = const Duration(seconds: 5),
+  }) async {
+    if (_isLoadingMore || _nextPageToken == null) return;
+
+    setState(() {
+      _isLoadingMore = true;
+      _errorMessage = null;
+    });
+
+    try {
+      final response = await FileService()
+          .listFiles(
+            uri: _currentPath,
+            pageSize: 50,
+            orderBy: _sortOption.field.apiKey,
+            orderDirection: _sortOption.direction.apiKey,
+            nextPageToken: _nextPageToken,
+          )
+          .timeout(timeout);
+
+      final List<dynamic> filesData = response['files'] as List<dynamic>? ?? [];
+      final pagination = response['pagination'] as Map<String, dynamic>? ?? {};
+      final newFiles = filesData
+          .map((f) => FileModel.fromJson(f as Map<String, dynamic>))
+          .toList();
+
+      setState(() {
+        final existingIds = _files.map((e) => e.id).toSet();
+        _files.addAll(newFiles.where((f) => !existingIds.contains(f.id)));
+        _nextPageToken = pagination['next_token'] as String?;
+        _hasMore = _nextPageToken != null;
+      });
+    } on TimeoutException {
+      setState(() {
+        _errorMessage = '加载更多超时，请重试';
+      });
+    } catch (e) {
+      setState(() {
+        _errorMessage = e.toString();
+      });
+    } finally {
+      setState(() {
+        _isLoadingMore = false;
+      });
+    }
+  }
+
   /// 进入文件夹
   Future<void> enterFolder(String path) async {
     _currentPath = path;
     _selectedFiles.clear();
     _highlightPath = null;
     _highlightTimer?.cancel();
+    _nextPageToken = null;
     ThumbnailService.instance.clearAll();
     await loadFiles();
   }
@@ -111,6 +183,7 @@ class FileManagerProvider extends ChangeNotifier {
     _selectedFiles.clear();
     _highlightPath = null;
     _highlightTimer?.cancel();
+    _nextPageToken = null;
     ThumbnailService.instance.clearAll();
     notifyListeners();
     await loadFiles();
@@ -144,6 +217,30 @@ class FileManagerProvider extends ChangeNotifier {
     notifyListeners();
   }
 
+  /// 设置排序选项并重新加载
+  Future<void> setSortOption(SortOption option) async {
+    if (_sortOption == option) return;
+    _sortOption = option;
+    notifyListeners();
+    await StorageService.instance.setString(
+      StorageKeys.fileSortOption,
+      option.toKey(),
+    );
+    await loadFiles(refresh: true);
+  }
+
+  /// 从持久化恢复排序偏好
+  Future<void> restoreSortOption() async {
+    final key = await StorageService.instance.getString(
+      StorageKeys.fileSortOption,
+    );
+    final option = SortOption.fromKey(key);
+    if (option != _sortOption) {
+      _sortOption = option;
+      notifyListeners();
+    }
+  }
+
   /// 设置错误信息
   void setErrorMessage(String? message) {
     _errorMessage = message;
@@ -224,9 +321,13 @@ class FileManagerProvider extends ChangeNotifier {
   }
 
   /// 移动文件（增量更新）
-  Future<String?> moveFiles(List<String> uris, String destination, {bool copy = false}) async {
+  Future<String?> moveFiles(
+    List<String> uris,
+    String destination, {
+    bool copy = false,
+  }) async {
     try {
-      await FileService().moveFiles(uris: uris, dst: destination);
+      await FileService().moveFiles(uris: uris, dst: destination, copy: copy);
       clearSelection();
 
       if (!copy) {
@@ -253,7 +354,10 @@ class FileManagerProvider extends ChangeNotifier {
   /// 重命名文件（原地更新，不刷新列表）
   Future<String?> renameFile(String path, String newName) async {
     try {
-      final response = await FileService().renameFile(uri: path, newName: newName);
+      final response = await FileService().renameFile(
+        uri: path,
+        newName: newName,
+      );
       if (response.isEmpty) {
         await loadFiles();
         return null;
@@ -319,21 +423,29 @@ class FileManagerProvider extends ChangeNotifier {
       _selectedFiles = [];
       _currentPath = '/';
       _errorMessage = null;
+      _nextPageToken = null;
+      _hasMore = true;
     });
   }
 
-  /// 智能刷新 - 只更新差异部分
-  Future<RefreshResult> refreshFiles({Duration timeout = const Duration(seconds: 5)}) async {
+  /// 智能刷新 - 只更新差异部分（仅刷新首页）
+  Future<RefreshResult> refreshFiles({
+    Duration timeout = const Duration(seconds: 5),
+  }) async {
     setState(() {
       _isLoading = true;
       _errorMessage = null;
     });
 
     try {
-      final response = await FileService().listFiles(
-        uri: _currentPath,
-        pageSize: 50,
-      ).timeout(timeout);
+      final response = await FileService()
+          .listFiles(
+            uri: _currentPath,
+            pageSize: 50,
+            orderBy: _sortOption.field.apiKey,
+            orderDirection: _sortOption.direction.apiKey,
+          )
+          .timeout(timeout);
 
       final List<dynamic> filesData = response['files'] as List<dynamic>? ?? [];
       final newFiles = filesData
@@ -378,9 +490,11 @@ class FileManagerProvider extends ChangeNotifier {
         }
       }
 
+      final pagination = response['pagination'] as Map<String, dynamic>?;
       setState(() {
         _files = updatedFiles;
-        _hasMore = response['pagination']?['next_token'] != null;
+        _nextPageToken = pagination?['next_token'] as String?;
+        _hasMore = _nextPageToken != null;
         _contextHint = response['context_hint'] as String?;
       });
 

lib/presentation/providers/sync_provider.dart

@@ -0,0 +1,882 @@
+import 'dart:async';
+import 'package:flutter/foundation.dart';
+
+import '../../../core/utils/app_logger.dart';
+import '../../../data/models/sync_config_model.dart';
+import '../../../data/models/sync_event_model.dart';
+import '../../../data/models/sync_task_model.dart';
+import '../../../services/storage_service.dart';
+import '../../../services/sync_service.dart';
+
+enum SyncState {
+  idle,
+  initializing,
+  initialSync,
+  continuous,
+  paused,
+  error,
+  stopped,
+}
+
+class SyncProvider extends ChangeNotifier {
+  SyncState _state = SyncState.idle;
+  String? _errorMessage;
+  SyncSummaryModel? _lastSummary;
+  int _syncedFiles = 0;
+  int _totalFiles = 0;
+  int _conflictCount = 0;
+  int _uploadingCount = 0;
+  int _downloadingCount = 0;
+  String? _currentFile;
+  StreamSubscription<SyncEventModel>? _eventSub;
+  Timer? _pollTimer;
+  int _pollIntervalSeconds = 1; // 动态调节：活跃1s，空闲3s
+
+  // 任务列表
+  List<SyncTaskModel> _activeTasks = [];
+  List<SyncTaskModel> _recentTasks = [];
+  int _activeWorkerCount = 0;
+  // 任务详情缓存: taskId -> items
+  final Map<String, List<SyncTaskItemModel>> _taskDetailCache = {};
+  // 任务详情是否有更多: taskId -> hasMore
+  final Map<String, bool> _taskDetailHasMore = {};
+  // 需要实时刷新详情的任务ID（UI 展开中的任务）
+  final Set<String> _watchedTaskIds = {};
+  bool _recentTasksLoaded = false;
+
+  // 持久化的同步配置
+  SyncConfigModel? _persistedConfig;
+
+  // 累积统计（跨所有 Worker 实时汇总，不仅仅是 lastSummary）
+  int _cumUploaded = 0;
+  int _cumDownloaded = 0;
+  int _cumRenamed = 0;
+  int _cumMoved = 0;
+  int _cumFailed = 0;
+  int _cumConflicts = 0;
+  int _cumDeletedLocal = 0;
+  int _cumDeletedRemote = 0;
+  int _cumSkipped = 0;
+
+  SyncState get state => _state;
+  String? get errorMessage => _errorMessage;
+  SyncSummaryModel? get lastSummary => _lastSummary;
+  int get syncedFiles => _syncedFiles;
+  int get totalFiles => _totalFiles;
+  int get conflictCount => _conflictCount;
+  int get uploadingCount => _uploadingCount;
+  int get downloadingCount => _downloadingCount;
+  String? get currentFile => _currentFile;
+  SyncConfigModel? get persistedConfig => _persistedConfig;
+  List<SyncTaskModel> get activeTasks => _activeTasks;
+  List<SyncTaskModel> get recentTasks => _recentTasks;
+  int get activeWorkerCount => _activeWorkerCount;
+
+  /// 累积上传数（所有 Worker 汇总）
+  int get cumUploaded => _cumUploaded;
+
+  /// 累积下载数（所有 Worker 汇总）
+  int get cumDownloaded => _cumDownloaded;
+
+  /// 累积重命名数
+  int get cumRenamed => _cumRenamed;
+
+  /// 累积移动数
+  int get cumMoved => _cumMoved;
+
+  /// 累积失败数
+  int get cumFailed => _cumFailed;
+
+  /// 累积冲突数
+  int get cumConflicts => _cumConflicts;
+
+  /// 累积删本地数
+  int get cumDeletedLocal => _cumDeletedLocal;
+
+  /// 累积删远程数
+  int get cumDeletedRemote => _cumDeletedRemote;
+
+  /// 累积跳过数
+  int get cumSkipped => _cumSkipped;
+
+  /// 累积总计操作数
+  int get cumTotal =>
+      _cumUploaded +
+      _cumDownloaded +
+      _cumRenamed +
+      _cumMoved +
+      _cumFailed +
+      _cumConflicts +
+      _cumDeletedLocal +
+      _cumDeletedRemote +
+      _cumSkipped;
+
+  /// 从活跃任务聚合的已完成数
+  int get activeCompletedCount {
+    int sum = 0;
+    for (final t in _activeTasks) {
+      sum += t.completedCount;
+    }
+    return sum;
+  }
+
+  /// 从活跃任务聚合的总数
+  int get activeTotalCount {
+    int sum = 0;
+    for (final t in _activeTasks) {
+      sum += t.totalCount;
+    }
+    return sum;
+  }
+
+  /// 从活跃任务聚合的进度（0.0~1.0）
+  double get activeProgress {
+    final total = activeTotalCount;
+    if (total == 0) return 0.0;
+    return activeCompletedCount / total;
+  }
+
+  bool get isActive =>
+      _state == SyncState.initializing ||
+      _state == SyncState.initialSync ||
+      _state == SyncState.continuous;
+
+  bool get isPaused => _state == SyncState.paused;
+
+  bool get hasError => _state == SyncState.error;
+
+  /// Rust 同步引擎是否已初始化（点过"开始同步"后为 true）
+  bool _engineInitialized = false;
+  bool get engineInitialized => _engineInitialized;
+
+  double get progress => _totalFiles > 0 ? _syncedFiles / _totalFiles : 0.0;
+
+  /// 从持久化存储恢复同步配置和状态
+  Future<void> restoreFromStorage() async {
+    final configMap = await StorageService.instance.getSyncConfig();
+    if (configMap != null) {
+      try {
+        _persistedConfig = SyncConfigModel(
+          baseUrl: configMap['baseUrl'] as String? ?? '',
+          accessToken: configMap['accessToken'] as String? ?? '',
+          refreshToken: configMap['refreshToken'] as String? ?? '',
+          localRoot: configMap['localRoot'] as String? ?? '',
+          remoteRoot: configMap['remoteRoot'] as String? ?? 'cloudreve://my',
+          // 旧版 'album' 迁移为 'album_upload'
+          syncMode: (configMap['syncMode'] as String? ?? 'full') == 'album'
+              ? 'album_upload'
+              : (configMap['syncMode'] as String? ?? 'full'),
+          conflictStrategy:
+              configMap['conflictStrategy'] as String? ?? 'keep_both',
+          wcfDeleteMode:
+              configMap['wcfDeleteMode'] as String? ?? 'wcf_delete_local_only',
+          maxConcurrentTransfers:
+              configMap['maxConcurrentTransfers'] as int? ?? 3,
+          bandwidthLimitKbps: configMap['bandwidthLimitKbps'] as int? ?? 0,
+          maxWorkers: configMap['maxWorkers'] as int? ?? 0,
+          dataDir: configMap['dataDir'] as String? ?? '',
+          clientId: configMap['clientId'] as String? ?? '',
+          logLevel: configMap['logLevel'] as String? ?? 'info',
+        );
+        AppLogger.i(
+          '恢复同步配置: 模式=${_persistedConfig!.syncMode}, 冲突=${_persistedConfig!.conflictStrategy}, 并发=${_persistedConfig!.maxConcurrentTransfers}, 带宽=${_persistedConfig!.bandwidthLimitKbps}kbps, maxWorkers=${_persistedConfig!.maxWorkers}',
+        );
+      } catch (e) {
+        AppLogger.e('恢复同步配置失败: $e');
+      }
+    }
+
+    final savedState = await StorageService.instance.getSyncState();
+    if (savedState != null && savedState != 'idle' && savedState != 'stopped') {
+      AppLogger.i('恢复同步状态: $savedState');
+    }
+
+    // 恢复累积统计
+    final cumStats = await StorageService.instance.getSyncCumStats();
+    if (cumStats != null) {
+      _cumUploaded = cumStats['uploaded'] ?? 0;
+      _cumDownloaded = cumStats['downloaded'] ?? 0;
+      _cumRenamed = cumStats['renamed'] ?? 0;
+      _cumMoved = cumStats['moved'] ?? 0;
+      _cumFailed = cumStats['failed'] ?? 0;
+      _cumConflicts = cumStats['conflicts'] ?? 0;
+      _cumDeletedLocal = cumStats['deleted_local'] ?? 0;
+      _cumDeletedRemote = cumStats['deleted_remote'] ?? 0;
+      _cumSkipped = cumStats['skipped'] ?? 0;
+      AppLogger.i(
+        '恢复累积统计: 上传=$_cumUploaded, 下载=$_cumDownloaded, 失败=$_cumFailed, 冲突=$_cumConflicts, 删本地=$_cumDeletedLocal, 删远程=$_cumDeletedRemote, 跳过=$_cumSkipped',
+      );
+    }
+  }
+
+  /// 保存同步配置到持久化存储
+  Future<void> _persistConfig(SyncConfigModel config) async {
+    _persistedConfig = config;
+    await StorageService.instance.setSyncConfig({
+      'baseUrl': config.baseUrl,
+      'accessToken': config.accessToken,
+      'refreshToken': config.refreshToken,
+      'localRoot': config.localRoot,
+      'remoteRoot': config.remoteRoot,
+      'syncMode': config.syncMode,
+      'conflictStrategy': config.conflictStrategy,
+      'wcfDeleteMode': config.wcfDeleteMode,
+      'maxConcurrentTransfers': config.maxConcurrentTransfers,
+      'bandwidthLimitKbps': config.bandwidthLimitKbps,
+      'maxWorkers': config.maxWorkers,
+      'dataDir': config.dataDir,
+      'clientId': config.clientId,
+      'logLevel': config.logLevel,
+    });
+  }
+
+  /// 持久化累积统计
+  Future<void> _persistCumStats() async {
+    await StorageService.instance.setSyncCumStats({
+      'uploaded': _cumUploaded,
+      'downloaded': _cumDownloaded,
+      'renamed': _cumRenamed,
+      'moved': _cumMoved,
+      'failed': _cumFailed,
+      'conflicts': _cumConflicts,
+      'deleted_local': _cumDeletedLocal,
+      'deleted_remote': _cumDeletedRemote,
+      'skipped': _cumSkipped,
+    });
+  }
+
+  /// 从 Rust DB 加载累积统计（权威数据源）
+  /// 取 DB 和内存中的较大值，避免覆盖事件已递增的增量
+  Future<void> _loadCumStatsFromDb() async {
+    try {
+      final stats = await SyncService.instance.getCumStats();
+      _cumUploaded = _max(_cumUploaded, stats['uploaded'] ?? 0);
+      _cumDownloaded = _max(_cumDownloaded, stats['downloaded'] ?? 0);
+      _cumRenamed = _max(_cumRenamed, stats['renamed'] ?? 0);
+      _cumMoved = _max(_cumMoved, stats['moved'] ?? 0);
+      _cumFailed = _max(_cumFailed, stats['failed'] ?? 0);
+      _cumConflicts = _max(_cumConflicts, stats['conflicts'] ?? 0);
+      _cumDeletedLocal = _max(_cumDeletedLocal, stats['deleted_local'] ?? 0);
+      _cumDeletedRemote = _max(_cumDeletedRemote, stats['deleted_remote'] ?? 0);
+      _cumSkipped = _max(_cumSkipped, stats['skipped'] ?? 0);
+      await _persistCumStats();
+      AppLogger.i(
+        '从 DB 校准累积统计: 上传=$_cumUploaded, 下载=$_cumDownloaded, 失败=$_cumFailed, 冲突=$_cumConflicts, 删本地=$_cumDeletedLocal, 删远程=$_cumDeletedRemote, 跳过=$_cumSkipped',
+      );
+      notifyListeners();
+    } catch (e) {
+      AppLogger.e('从 DB 加载累积统计失败: $e');
+    }
+  }
+
+  static int _max(int a, int b) => a > b ? a : b;
+
+  /// 持久化同步状态
+  Future<void> _persistState(SyncState state) async {
+    final stateStr = switch (state) {
+      SyncState.idle => 'idle',
+      SyncState.initializing => 'initializing',
+      SyncState.initialSync => 'initialSync',
+      SyncState.continuous => 'continuous',
+      SyncState.paused => 'paused',
+      SyncState.error => 'error',
+      SyncState.stopped => 'stopped',
+    };
+    await StorageService.instance.setSyncState(stateStr);
+  }
+
+  /// 初始化并启动同步
+  Future<void> startSync(SyncConfigModel config) async {
+    _state = SyncState.initializing;
+    _errorMessage = null;
+    _syncedFiles = 0;
+    _totalFiles = 0;
+    _currentFile = null;
+    // 不再清零 cum — 从 DB 加载权威数据
+    notifyListeners();
+
+    // 确保 clientId 已注入（Dart 生成、持久化、全层共享）
+    final clientId = await StorageService.instance.getOrCreateClientId();
+    final configWithClientId = config.copyWith(clientId: clientId);
+
+    // 持久化配置和状态
+    await _persistConfig(configWithClientId);
+    await _persistState(SyncState.initializing);
+
+    try {
+      await SyncService.instance.init(configWithClientId);
+      _engineInitialized = true;
+
+      // 从 DB 加载累积统计（权威数据源，替代 SharedPreferences）
+      await _loadCumStatsFromDb();
+
+      _subscribeEvents();
+
+      _state = SyncState.initialSync;
+      await _persistState(SyncState.initialSync);
+      notifyListeners();
+
+      // 启动状态轮询
+      _startPolling();
+
+      // 启动初始同步（后台运行）
+      SyncService.instance
+          .startInitialSync()
+          .then((summary) async {
+            _lastSummary = summary;
+            // 不再覆盖 cum — TaskItemUpdated 事件已实时递增
+            // 初始同步完成后从 DB 重新校准（避免事件遗漏）
+            await _loadCumStatsFromDb();
+            _state = SyncState.continuous;
+            await _persistState(SyncState.continuous);
+            AppLogger.i('初始同步完成');
+            notifyListeners();
+
+            // 自动启动持续同步
+            SyncService.instance.startContinuousSync();
+          })
+          .catchError((e) async {
+            _state = SyncState.error;
+            _errorMessage = e.toString();
+            await _persistState(SyncState.error);
+            AppLogger.e('初始同步失败: $e');
+            notifyListeners();
+          });
+    } catch (e) {
+      _state = SyncState.error;
+      _errorMessage = e.toString();
+      await _persistState(SyncState.error);
+      AppLogger.e('同步启动失败: $e');
+      notifyListeners();
+    }
+  }
+
+  /// 自动恢复同步（启动时调用，如果之前处于同步状态则恢复）
+  Future<void> autoResumeIfNeeded({
+    String? currentAccessToken,
+    String? currentRefreshToken,
+  }) async {
+    if (_persistedConfig == null) {
+      await restoreFromStorage();
+    }
+    if (_persistedConfig == null) return;
+
+    final savedState = await StorageService.instance.getSyncState();
+    if (savedState == null ||
+        savedState == 'idle' ||
+        savedState == 'stopped' ||
+        savedState == 'error') {
+      return;
+    }
+
+    AppLogger.i('自动恢复同步，上次状态: $savedState');
+
+    var config = _persistedConfig!;
+    if (currentAccessToken != null && currentRefreshToken != null) {
+      config = config.copyWith(
+        accessToken: currentAccessToken,
+        refreshToken: currentRefreshToken,
+      );
+    }
+
+    await startSync(config);
+  }
+
+  /// 更新配置（持久化 + 推送到 Rust 引擎）
+  Future<void> updateConfig(SyncConfigModel config) async {
+    await _persistConfig(config);
+
+    // 引擎已初始化时（无论是否运行中），推送配置到 Rust
+    try {
+      await SyncService.instance.updateConfig(config);
+      AppLogger.i('同步配置已更新到引擎: 模式=${config.syncMode}');
+    } catch (e) {
+      AppLogger.e('更新配置到引擎失败: $e');
+    }
+  }
+
+  /// 热修改日志级别（立即生效，无需重启引擎）
+  Future<void> setLogLevel(String level) async {
+    // 持久化
+    if (_persistedConfig != null) {
+      final updated = _persistedConfig!.copyWith(logLevel: level);
+      await _persistConfig(updated);
+    }
+
+    // 引擎已初始化时立即通知 Rust（不限制仅活跃状态）
+    try {
+      await SyncService.instance.setLogLevel(level);
+      AppLogger.i('日志级别已切换为: $level');
+    } catch (e) {
+      AppLogger.e('切换日志级别失败: $e');
+    }
+  }
+
+  /// 轮询 Rust 引擎状态（动态间隔：活跃1s，空闲3s）
+  void _startPolling() {
+    _pollTimer?.cancel();
+    _pollIntervalSeconds = isActive || isPaused ? 1 : 3;
+    _pollTimer = Timer.periodic(
+      Duration(seconds: _pollIntervalSeconds),
+      (_) => _pollStatus(),
+    );
+  }
+
+  void _adjustPollInterval() {
+    final target = isActive || isPaused ? 1 : 3;
+    if (target != _pollIntervalSeconds) {
+      _pollIntervalSeconds = target;
+      _startPolling();
+    }
+  }
+
+  void _stopPolling() {
+    _pollTimer?.cancel();
+    _pollTimer = null;
+  }
+
+  int _pollErrorCount = 0;
+  int _pollCount = 0;
+
+  Future<void> _pollStatus() async {
+    try {
+      final status = await SyncService.instance.getStatus();
+      _syncedFiles = status.syncedFiles;
+      _totalFiles = status.totalFiles;
+      _uploadingCount = status.uploadingCount;
+      _downloadingCount = status.downloadingCount;
+      _conflictCount = status.conflictCount;
+      _pollErrorCount = 0;
+
+      final rustState = _parseState(status.state);
+      if (rustState != _state && rustState != SyncState.idle) {
+        _state = rustState;
+        await _persistState(rustState);
+      }
+      if (status.errorMessage != null && status.errorMessage!.isNotEmpty) {
+        _errorMessage = status.errorMessage;
+      }
+
+      // 轮询活跃任务 + 刷新已完成任务
+      try {
+        final newActiveWorkerCount = await SyncService.instance
+            .getActiveWorkerCount();
+        final newActiveTasks = await SyncService.instance.getActiveTasksTyped();
+
+        bool changed = newActiveWorkerCount != _activeWorkerCount;
+        _activeWorkerCount = newActiveWorkerCount;
+
+        // 活跃任务列表有变化时才更新
+        if (!_taskListEqual(newActiveTasks, _activeTasks)) {
+          _activeTasks = newActiveTasks;
+          changed = true;
+          // 清除不再活跃的任务的详情缓存
+          _taskDetailCache.removeWhere(
+            (key, _) => !newActiveTasks.any((t) => t.id == key),
+          );
+        }
+
+        // 每次 polling 都刷新已完成任务
+        await _refreshRecentTasks();
+
+        // 刷新展开中的任务详情（实时更新 item 状态）
+        await _refreshWatchedTaskDetails();
+
+        if (changed) {
+          notifyListeners();
+        } else {
+          notifyListeners();
+        }
+      } catch (_) {}
+
+      // 每 5 次轮询从 DB 校准累积统计（兜底，防止事件丢失导致 UI 不同步）
+      _pollCount++;
+      if (_pollCount % 5 == 0 && _engineInitialized) {
+        try {
+          final stats = await SyncService.instance.getCumStats();
+          final dbUploaded = stats['uploaded'] ?? 0;
+          final dbDownloaded = stats['downloaded'] ?? 0;
+          final dbRenamed = stats['renamed'] ?? 0;
+          final dbMoved = stats['moved'] ?? 0;
+          final dbFailed = stats['failed'] ?? 0;
+          final dbConflicts = stats['conflicts'] ?? 0;
+          final dbDeletedLocal = stats['deleted_local'] ?? 0;
+          final dbDeletedRemote = stats['deleted_remote'] ?? 0;
+          final dbSkipped = stats['skipped'] ?? 0;
+          if (dbUploaded != _cumUploaded ||
+              dbDownloaded != _cumDownloaded ||
+              dbRenamed != _cumRenamed ||
+              dbMoved != _cumMoved ||
+              dbFailed != _cumFailed ||
+              dbConflicts != _cumConflicts ||
+              dbDeletedLocal != _cumDeletedLocal ||
+              dbDeletedRemote != _cumDeletedRemote ||
+              dbSkipped != _cumSkipped) {
+            _cumUploaded = dbUploaded;
+            _cumDownloaded = dbDownloaded;
+            _cumRenamed = dbRenamed;
+            _cumMoved = dbMoved;
+            _cumFailed = dbFailed;
+            _cumConflicts = dbConflicts;
+            _cumDeletedLocal = dbDeletedLocal;
+            _cumDeletedRemote = dbDeletedRemote;
+            _cumSkipped = dbSkipped;
+            await _persistCumStats();
+          }
+        } catch (_) {}
+      }
+
+      notifyListeners();
+      _adjustPollInterval();
+    } catch (_) {
+      // 引擎未初始化等连续错误，停止轮询避免刷屏
+      _pollErrorCount++;
+      if (_pollErrorCount >= 3) {
+        _stopPolling();
+      }
+    }
+  }
+
+  /// 首次加载已完成任务（如果轮询未运行则启动慢速轮询）
+  Future<void> loadRecentTasks() async {
+    if (_recentTasksLoaded) return;
+    await _refreshRecentTasks();
+    if (_pollTimer == null) {
+      _startPolling();
+    }
+  }
+
+  Future<void> _refreshRecentTasks() async {
+    try {
+      final tasks = await SyncService.instance.getRecentTasksTyped(limit: 50);
+      if (!_taskListEqual(tasks, _recentTasks)) {
+        _recentTasks = tasks;
+      }
+      _recentTasksLoaded = true;
+    } catch (_) {}
+  }
+
+  bool _taskListEqual(List<SyncTaskModel> a, List<SyncTaskModel> b) {
+    if (a.length != b.length) return false;
+    for (int i = 0; i < a.length; i++) {
+      if (a[i].id != b[i].id ||
+          a[i].completedCount != b[i].completedCount ||
+          a[i].failedCount != b[i].failedCount ||
+          a[i].status != b[i].status) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  /// 刷新展开中的任务详情（轮询时调用，只刷新 watched 的任务）
+  Future<void> _refreshWatchedTaskDetails() async {
+    if (_watchedTaskIds.isEmpty) return;
+    for (final taskId in _watchedTaskIds.toList()) {
+      try {
+        // 重新加载前 20 条（和当前缓存量一致）
+        final cachedCount = _taskDetailCache[taskId]?.length ?? 20;
+        final newItems = await SyncService.instance.queryTaskItemsTyped(
+          taskId: taskId,
+          limit: cachedCount.clamp(20, 100),
+          offset: 0,
+        );
+        final oldItems = _taskDetailCache[taskId];
+        if (oldItems != null && !_itemListEqual(oldItems, newItems)) {
+          _taskDetailCache[taskId] = newItems;
+          notifyListeners();
+        } else if (oldItems == null) {
+          _taskDetailCache[taskId] = newItems;
+          notifyListeners();
+        }
+      } catch (_) {}
+    }
+  }
+
+  bool _itemListEqual(List<SyncTaskItemModel> a, List<SyncTaskItemModel> b) {
+    if (a.length != b.length) return false;
+    for (int i = 0; i < a.length; i++) {
+      if (a[i].id != b[i].id || a[i].status != b[i].status) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  void _subscribeEvents() {
+    _eventSub = SyncService.instance.events.listen((event) async {
+      switch (event) {
+        case SyncStateChanged(:final newState):
+          _state = _parseState(newState);
+          await _persistState(_state);
+        case SyncProgress(:final synced, :final total, :final currentFile):
+          _syncedFiles = synced;
+          _totalFiles = total;
+          _currentFile = currentFile;
+        case SyncFileUploaded():
+          _syncedFiles++;
+        case SyncFileDownloaded():
+          _syncedFiles++;
+        case SyncConflictDetected():
+          _conflictCount++;
+        case SyncError(:final message, :final recoverable):
+          if (!recoverable) {
+            _state = SyncState.error;
+            _errorMessage = message;
+            await _persistState(SyncState.error);
+          }
+        case SyncTokenExpired():
+          _handleTokenExpired();
+        case SyncInitialSyncComplete(:final summary):
+          _lastSummary = summary;
+          _state = SyncState.continuous;
+          await _persistState(SyncState.continuous);
+        // 不再在此启动 continuous sync — .then() 回调已启动，避免重复
+        case SyncDiskSpaceWarning():
+          AppLogger.w('磁盘空间不足');
+        case SyncWorkerCompleted():
+          break;
+        case SyncWorkerFailed():
+          break;
+        case SyncTaskItemUpdated(:final taskId, :final action, :final status):
+          AppLogger.d(
+            '[SyncProvider] TaskItemUpdated: taskId=$taskId, action=$action, status=$status',
+          );
+          // 实时更新活跃任务的 completedCount/failedCount
+          final idx = _activeTasks.indexWhere((t) => t.id == taskId);
+          if (idx >= 0) {
+            final old = _activeTasks[idx];
+            if (status == 'completed') {
+              _activeTasks[idx] = SyncTaskModel(
+                id: old.id,
+                trigger: old.trigger,
+                totalCount: old.totalCount,
+                completedCount: old.completedCount + 1,
+                failedCount: old.failedCount,
+                status: old.status,
+                createdAt: old.createdAt,
+                updatedAt: old.updatedAt,
+                finishedAt: old.finishedAt,
+              );
+            } else if (status == 'failed') {
+              _activeTasks[idx] = SyncTaskModel(
+                id: old.id,
+                trigger: old.trigger,
+                totalCount: old.totalCount,
+                completedCount: old.completedCount,
+                failedCount: old.failedCount + 1,
+                status: old.status,
+                createdAt: old.createdAt,
+                updatedAt: old.updatedAt,
+                finishedAt: old.finishedAt,
+              );
+            }
+          }
+          // 实时递增累积计数器
+          if (status == 'completed') {
+            switch (action) {
+              case 'upload':
+                _cumUploaded++;
+                AppLogger.d('[SyncProvider] cumUploaded=$_cumUploaded');
+              case 'download':
+                _cumDownloaded++;
+              case 'rename':
+                _cumRenamed++;
+              case 'move':
+                _cumMoved++;
+              case 'conflict_resolve':
+                _cumConflicts++;
+              case 'delete_local':
+                _cumDeletedLocal++;
+              case 'delete_remote':
+                _cumDeletedRemote++;
+              case 'create_placeholder':
+                break;
+              default:
+                AppLogger.w(
+                  '[SyncProvider] TaskItemUpdated: 未知 action=$action',
+                );
+            }
+          } else if (status == 'skipped') {
+            _cumSkipped++;
+          } else if (status == 'failed') {
+            _cumFailed++;
+          }
+      }
+      notifyListeners();
+      _persistCumStats();
+    });
+  }
+
+  SyncState _parseState(String state) {
+    return switch (state) {
+      'idle' => SyncState.idle,
+      'initializing' => SyncState.initializing,
+      'initialSync' => SyncState.initialSync,
+      'continuous' => SyncState.continuous,
+      'paused' => SyncState.paused,
+      'error' => SyncState.error,
+      'stopped' => SyncState.stopped,
+      _ => SyncState.idle,
+    };
+  }
+
+  void _handleTokenExpired() {
+    AppLogger.w('Token 过期，需要刷新');
+  }
+
+  /// 获取任务详情（分页加载，带缓存）
+  Future<List<SyncTaskItemModel>> getTaskDetail(String taskId) async {
+    if (_taskDetailCache.containsKey(taskId)) {
+      return _taskDetailCache[taskId]!;
+    }
+    final items = await SyncService.instance.queryTaskItemsTyped(
+      taskId: taskId,
+      limit: 20,
+      offset: 0,
+    );
+    _taskDetailCache[taskId] = items;
+    _taskDetailHasMore[taskId] = items.length >= 20;
+    notifyListeners();
+    return items;
+  }
+
+  /// 加载更多任务详情
+  Future<List<SyncTaskItemModel>> loadMoreTaskDetail(String taskId) async {
+    final current = _taskDetailCache[taskId] ?? [];
+    final offset = current.length;
+    final newItems = await SyncService.instance.queryTaskItemsTyped(
+      taskId: taskId,
+      limit: 20,
+      offset: offset,
+    );
+    final merged = [...current, ...newItems];
+    _taskDetailCache[taskId] = merged;
+    _taskDetailHasMore[taskId] = newItems.length >= 20;
+    notifyListeners();
+    return merged;
+  }
+
+  /// 指定任务是否还有更多详情可加载
+  bool hasMoreTaskDetail(String taskId) {
+    return _taskDetailHasMore[taskId] ?? true;
+  }
+
+  /// 标记任务详情需要实时刷新（UI 展开时调用）
+  void watchTaskDetail(String taskId) {
+    _watchedTaskIds.add(taskId);
+  }
+
+  /// 取消实时刷新（UI 收起时调用）
+  void unwatchTaskDetail(String taskId) {
+    _watchedTaskIds.remove(taskId);
+  }
+
+  /// 读取缓存的任务详情（同步，无则返回 null）
+  List<SyncTaskItemModel>? getCachedTaskDetail(String taskId) {
+    return _taskDetailCache[taskId];
+  }
+
+  /// 清除任务详情缓存，下次获取时重新请求
+  void invalidateTaskDetail(String taskId) {
+    _taskDetailCache.remove(taskId);
+    _taskDetailHasMore.remove(taskId);
+  }
+
+  /// 清除所有任务详情缓存
+  void invalidateAllTaskDetails() {
+    _taskDetailCache.clear();
+    _taskDetailHasMore.clear();
+    _recentTasksLoaded = false;
+  }
+
+  /// 暂停同步
+  Future<void> pause() async {
+    await SyncService.instance.pause();
+    _state = SyncState.paused;
+    await _persistState(SyncState.paused);
+    notifyListeners();
+  }
+
+  /// 恢复同步
+  Future<void> resume() async {
+    await SyncService.instance.resume();
+    _state = SyncState.continuous;
+    await _persistState(SyncState.continuous);
+    notifyListeners();
+  }
+
+  /// 停止同步
+  Future<void> stop() async {
+    await SyncService.instance.stop();
+    _state = SyncState.stopped;
+    await _persistState(SyncState.stopped);
+    notifyListeners();
+    _adjustPollInterval();
+  }
+
+  /// 重置同步：停止任务 → 清空 DB → (可选)清空本地目录 → 回到初始状态
+  Future<void> resetSync({bool deleteLocalFiles = true}) async {
+    // 引擎未初始化时仅清空本地状态
+    try {
+      await SyncService.instance.resetSync(deleteLocalFiles: deleteLocalFiles);
+    } catch (_) {}
+    _state = SyncState.idle;
+    _errorMessage = null;
+    _syncedFiles = 0;
+    _totalFiles = 0;
+    _conflictCount = 0;
+    _uploadingCount = 0;
+    _downloadingCount = 0;
+    _currentFile = null;
+    _lastSummary = null;
+    _cumUploaded = 0;
+    _cumDownloaded = 0;
+    _cumRenamed = 0;
+    _cumMoved = 0;
+    _cumFailed = 0;
+    _cumConflicts = 0;
+    _cumDeletedLocal = 0;
+    _cumDeletedRemote = 0;
+    _cumSkipped = 0;
+    _persistCumStats();
+    _activeTasks = [];
+    _recentTasks = [];
+    _activeWorkerCount = 0;
+    _taskDetailCache.clear();
+    _recentTasksLoaded = false;
+    _engineInitialized = false;
+    await _persistState(SyncState.idle);
+    notifyListeners();
+  }
+
+  /// 强制重新同步
+  Future<void> forceSync() async {
+    _state = SyncState.initialSync;
+    _syncedFiles = 0;
+    _totalFiles = 0;
+    await _persistState(SyncState.initialSync);
+    notifyListeners();
+
+    try {
+      final summary = await SyncService.instance.forceSync();
+      _lastSummary = summary;
+      _state = SyncState.continuous;
+      await _persistState(SyncState.continuous);
+      // 重新启动持续同步
+      SyncService.instance.startContinuousSync();
+    } catch (e) {
+      _state = SyncState.error;
+      _errorMessage = e.toString();
+      await _persistState(SyncState.error);
+    }
+    notifyListeners();
+  }
+
+  @override
+  void dispose() {
+    _stopPolling();
+    _eventSub?.cancel();
+    super.dispose();
+  }
+}

lib/presentation/providers/user_setting_provider.dart

@@ -46,10 +46,7 @@ class UserSettingProvider extends ChangeNotifier {
 
   /// 同时加载设置和容量
   Future<void> loadAll() async {
-    await Future.wait([
-      loadSettings(),
-      loadCapacity(),
-    ]);
+    await Future.wait([loadSettings(), loadCapacity()]);
   }
 
   /// 修改昵称
@@ -244,6 +241,15 @@ class UserSettingProvider extends ChangeNotifier {
     notifyListeners();
   }
 
+  /// 清除用户数据（切换账号时调用）
+  void clear() {
+    _settings = null;
+    _capacity = null;
+    _errorMessage = null;
+    _state = UserSettingState.idle;
+    notifyListeners();
+  }
+
   void _setState(UserSettingState state) {
     _state = state;
     notifyListeners();

lib/presentation/widgets/announcement_dialog.dart

@@ -0,0 +1,212 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_inappwebview/flutter_inappwebview.dart' as desktop;
+import 'package:webview_flutter/webview_flutter.dart' as mobile;
+
+bool get _useDesktopWebView =>
+    !kIsWeb && (Platform.isWindows || Platform.isLinux);
+
+class AnnouncementDialog extends StatefulWidget {
+  final String title;
+  final String html;
+  final String baseUrl;
+
+  const AnnouncementDialog({
+    super.key,
+    required this.title,
+    required this.html,
+    required this.baseUrl,
+  });
+
+  static Future<void> show(
+    BuildContext context, {
+    required String title,
+    required String html,
+    required String baseUrl,
+  }) async {
+    if (html.trim().isEmpty) return;
+
+    await showDialog<void>(
+      context: context,
+      barrierDismissible: true,
+      builder: (_) =>
+          AnnouncementDialog(title: title, html: html, baseUrl: baseUrl),
+    );
+  }
+
+  @override
+  State<AnnouncementDialog> createState() => _AnnouncementDialogState();
+}
+
+class _AnnouncementDialogState extends State<AnnouncementDialog> {
+  mobile.WebViewController? _mobileController;
+  desktop.InAppWebViewController? _desktopController;
+  late final String _html;
+  late final String _baseUrl;
+  bool _loading = true;
+
+  @override
+  void initState() {
+    super.initState();
+
+    final origin = Uri.parse(widget.baseUrl).origin;
+    _html = _wrapHtml(widget.html);
+    _baseUrl = '$origin/';
+
+    if (!_useDesktopWebView) {
+      _mobileController = mobile.WebViewController()
+        ..setJavaScriptMode(mobile.JavaScriptMode.unrestricted)
+        ..setBackgroundColor(Colors.transparent)
+        ..setNavigationDelegate(
+          mobile.NavigationDelegate(
+            onPageFinished: (_) {
+              if (mounted) setState(() => _loading = false);
+            },
+          ),
+        )
+        ..loadHtmlString(_html, baseUrl: _baseUrl);
+    }
+  }
+
+  @override
+  void dispose() {
+    _desktopController?.dispose();
+    super.dispose();
+  }
+
+  String _wrapHtml(String body) {
+    final encodedTitle = const HtmlEscape().convert(widget.title);
+
+    return '''
+<!doctype html>
+<html>
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
+<title>$encodedTitle</title>
+<style>
+  html, body {
+    margin: 0;
+    padding: 0;
+    background: transparent;
+    color: #1f2937;
+    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", sans-serif;
+    font-size: 14px;
+    line-height: 1.65;
+    overflow-wrap: anywhere;
+  }
+  body {
+    padding: 12px 14px 18px;
+    box-sizing: border-box;
+  }
+  img, video {
+    max-width: 100% !important;
+    height: auto !important;
+    border-radius: 12px;
+  }
+  a {
+    color: #2563eb;
+    text-decoration: none;
+  }
+  fieldset, section, div {
+    max-width: 100% !important;
+    box-sizing: border-box !important;
+  }
+</style>
+</head>
+<body>
+$body
+</body>
+</html>
+''';
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+
+    return Dialog(
+      insetPadding: const EdgeInsets.symmetric(horizontal: 18, vertical: 28),
+      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(22)),
+      child: ClipRRect(
+        borderRadius: BorderRadius.circular(22),
+        child: SizedBox(
+          width: double.infinity,
+          height: MediaQuery.of(context).size.height * 0.72,
+          child: Column(
+            children: [
+              Container(
+                padding: const EdgeInsets.fromLTRB(18, 14, 8, 10),
+                decoration: BoxDecoration(
+                  color: theme.colorScheme.surface,
+                  border: Border(
+                    bottom: BorderSide(
+                      color: theme.dividerColor.withValues(alpha: 0.45),
+                    ),
+                  ),
+                ),
+                child: Row(
+                  children: [
+                    Expanded(
+                      child: Text(
+                        widget.title,
+                        style: theme.textTheme.titleMedium?.copyWith(
+                          fontWeight: FontWeight.w800,
+                        ),
+                      ),
+                    ),
+                    IconButton(
+                      tooltip: '关闭',
+                      onPressed: () => Navigator.of(context).pop(),
+                      icon: const Icon(Icons.close),
+                    ),
+                  ],
+                ),
+              ),
+              Expanded(
+                child: Stack(
+                  children: [
+                    _buildWebView(),
+                    if (_loading)
+                      const Center(child: CircularProgressIndicator()),
+                  ],
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildWebView() {
+    if (_useDesktopWebView) {
+      return desktop.InAppWebView(
+        initialData: desktop.InAppWebViewInitialData(
+          data: _html,
+          baseUrl: desktop.WebUri(_baseUrl),
+        ),
+        initialSettings: desktop.InAppWebViewSettings(
+          javaScriptEnabled: true,
+          domStorageEnabled: true,
+          transparentBackground: true,
+          supportZoom: false,
+        ),
+        onWebViewCreated: (controller) {
+          _desktopController = controller;
+        },
+        onLoadStop: (_, url) {
+          if (mounted) setState(() => _loading = false);
+        },
+        onReceivedError: (_, request, error) {
+          if (mounted) setState(() => _loading = false);
+        },
+      );
+    }
+
+    return mobile.WebViewWidget(controller: _mobileController!);
+  }
+}

lib/presentation/widgets/file_breadcrumb.dart

@@ -1,8 +1,10 @@
 import 'package:flutter/material.dart';
 import 'package:lucide_icons/lucide_icons.dart';
 
+import '../../core/utils/file_utils.dart';
+
 /// 面包屑导航组件
-class FileBreadcrumb extends StatelessWidget {
+class FileBreadcrumb extends StatefulWidget {
   final String currentPath;
   final void Function(String path) onPathTap;
 
@@ -12,9 +14,38 @@ class FileBreadcrumb extends StatelessWidget {
     required this.onPathTap,
   });
 
+  @override
+  State<FileBreadcrumb> createState() => _FileBreadcrumbState();
+}
+
+class _FileBreadcrumbState extends State<FileBreadcrumb> {
+  final _controller = ScrollController();
+
+  @override
+  void didUpdateWidget(covariant FileBreadcrumb oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.currentPath != widget.currentPath) {
+      WidgetsBinding.instance.addPostFrameCallback((_) {
+        if (_controller.hasClients) {
+          _controller.animateTo(
+            _controller.position.maxScrollExtent,
+            duration: const Duration(milliseconds: 200),
+            curve: Curves.easeOut,
+          );
+        }
+      });
+    }
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
-    final pathParts = currentPath.split('/');
+    final pathParts = widget.currentPath.split('/');
     pathParts.removeWhere((part) => part.isEmpty);
     final theme = Theme.of(context);
     final colorScheme = theme.colorScheme;
@@ -32,6 +63,7 @@ class FileBreadcrumb extends StatelessWidget {
         ),
       ),
       child: SingleChildScrollView(
+        controller: _controller,
         scrollDirection: Axis.horizontal,
         child: Row(
           children: [
@@ -41,7 +73,7 @@ class FileBreadcrumb extends StatelessWidget {
               path: '/',
               icon: LucideIcons.home,
               primaryColor: colorScheme.primary,
-              onTap: () => onPathTap('/'),
+              onTap: () => widget.onPathTap('/'),
             ),
             for (int i = 0; i < pathParts.length; i++) ...[
               Padding(
@@ -58,8 +90,9 @@ class FileBreadcrumb extends StatelessWidget {
                 path: '/${pathParts.sublist(0, i + 1).join('/')}',
                 icon: null,
                 primaryColor: colorScheme.primary,
-                onTap: () =>
-                    onPathTap('/${pathParts.sublist(0, i + 1).join('/')}'),
+                onTap: () => widget.onPathTap(
+                  '/${pathParts.sublist(0, i + 1).join('/')}',
+                ),
               ),
             ],
           ],
@@ -69,19 +102,7 @@ class FileBreadcrumb extends StatelessWidget {
   }
 
   String _decodePathSegment(String value) {
-    var decoded = value;
-
-    for (var i = 0; i < 5; i++) {
-      try {
-        final next = Uri.decodeComponent(decoded);
-        if (next == decoded) break;
-        decoded = next;
-      } on FormatException {
-        break;
-      }
-    }
-
-    return decoded;
+    return FileUtils.safeDecodePathSegment(value);
   }
 
   Widget _buildBreadcrumbItem(

lib/presentation/widgets/file_grid_item.dart

@@ -17,6 +17,7 @@ class FileGridItem extends StatelessWidget {
   final VoidCallback? onSelect;
   final VoidCallback? onDownload;
   final VoidCallback? onOpenInBrowser;
+  final VoidCallback? onOpenInCloudreveApp;
   final VoidCallback? onRename;
   final VoidCallback? onMove;
   final VoidCallback? onCopy;
@@ -38,6 +39,7 @@ class FileGridItem extends StatelessWidget {
     this.onSelect,
     this.onDownload,
     this.onOpenInBrowser,
+    this.onOpenInCloudreveApp,
     this.onRename,
     this.onMove,
     this.onCopy,
@@ -50,25 +52,27 @@ class FileGridItem extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Builder(
-      builder: (builderContext) => LayoutBuilder(
-        builder: (context, constraints) {
-          final fontSize = (constraints.maxWidth * 0.1).clamp(10.0, 13.0);
+    return RepaintBoundary(
+      child: Builder(
+        builder: (builderContext) => LayoutBuilder(
+          builder: (context, constraints) {
+            final fontSize = (constraints.maxWidth * 0.1).clamp(10.0, 13.0);
 
-          return _FileGridItemHover(
-            file: file,
-            isSelected: isSelected,
-            isHighlighted: isHighlighted,
-            showCheckbox: showCheckbox,
-            contextHint: contextHint,
-            fontSize: fontSize,
-            tapToShowMenu: tapToShowMenu,
-            onTap: tapToShowMenu ? null : onTap,
-            onLongPress: () => _showMenu(builderContext),
-            onSelect: onSelect,
-            onMore: () => _showMenu(builderContext),
-          );
-        },
+            return _FileGridItemHover(
+              file: file,
+              isSelected: isSelected,
+              isHighlighted: isHighlighted,
+              showCheckbox: showCheckbox,
+              contextHint: contextHint,
+              fontSize: fontSize,
+              tapToShowMenu: tapToShowMenu,
+              onTap: tapToShowMenu ? null : onTap,
+              onLongPress: () => _showMenu(builderContext),
+              onSelect: onSelect,
+              onMore: () => _showMenu(builderContext),
+            );
+          },
+        ),
       ),
     );
   }
@@ -79,6 +83,7 @@ class FileGridItem extends StatelessWidget {
       hasSelect: onSelect != null,
       hasDownload: onDownload != null,
       hasOpenInBrowser: onOpenInBrowser != null,
+      hasOpenInCloudreveApp: onOpenInCloudreveApp != null,
       hasRename: onRename != null,
       hasMove: onMove != null,
       hasCopy: onCopy != null,
@@ -95,6 +100,8 @@ class FileGridItem extends StatelessWidget {
         onDownload?.call();
       case FileMenuAction.openInBrowser:
         onOpenInBrowser?.call();
+      case FileMenuAction.openInCloudreveApp:
+        onOpenInCloudreveApp?.call();
       case FileMenuAction.rename:
         onRename?.call();
       case FileMenuAction.move:
@@ -318,10 +325,8 @@ class _FileGridItemHoverState extends State<_FileGridItemHover> {
 
   Widget _buildIconArea(BuildContext context) {
     final file = widget.file;
-    final ext = FileUtils.getFileExtension(file.name);
-    final isThumbnailable = !file.isFolder
-        && FileUtils.isImageFile(file.name)
-        && ext != 'svg';
+    final isThumbnailable =
+        !file.isFolder && FileUtils.isThumbnailableFile(file.name);
 
     if (!isThumbnailable) {
       return Center(
@@ -335,10 +340,52 @@ class _FileGridItemHoverState extends State<_FileGridItemHover> {
       );
     }
 
-    return ThumbnailImage(
-      file: file,
-      contextHint: widget.contextHint,
-      borderRadius: 10,
+    return Stack(
+      fit: StackFit.expand,
+      children: [
+        ThumbnailImage(
+          file: file,
+          contextHint: widget.contextHint,
+          borderRadius: 10,
+        ),
+        if (FileUtils.isVideoFile(file.name))
+          Center(
+            child: Container(
+              width: 34,
+              height: 34,
+              decoration: BoxDecoration(
+                color: Colors.black.withValues(alpha: 0.45),
+                borderRadius: BorderRadius.circular(17),
+              ),
+              child: const Icon(
+                LucideIcons.play,
+                color: Colors.white,
+                size: 18,
+              ),
+            ),
+          ),
+        if (FileUtils.isPsdFile(file.name))
+          Positioned(
+            left: 6,
+            bottom: 6,
+            child: Container(
+              padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
+              decoration: BoxDecoration(
+                color: Colors.black.withValues(alpha: 0.55),
+                borderRadius: BorderRadius.circular(6),
+              ),
+              child: const Text(
+                'PSD',
+                style: TextStyle(
+                  color: Colors.white,
+                  fontSize: 10,
+                  fontWeight: FontWeight.w700,
+                  letterSpacing: 0.2,
+                ),
+              ),
+            ),
+          ),
+      ],
     );
   }
 }

lib/presentation/widgets/file_info_dialog.dart

@@ -19,11 +19,58 @@ class FileInfoPanel extends StatefulWidget {
     Scaffold.of(context).openEndDrawer();
   }
 
+  /// 以 BottomSheet 方式展示文件详情
+  static void showAsBottomSheet(BuildContext context, FileModel file) {
+    showModalBottomSheet<void>(
+      context: context,
+      isScrollControlled: true,
+      showDragHandle: true,
+      builder: (_) => _FileInfoSheet(file: file),
+    );
+  }
+
   @override
   State<FileInfoPanel> createState() => _FileInfoPanelState();
 }
 
 class _FileInfoPanelState extends State<FileInfoPanel> {
+  @override
+  Widget build(BuildContext context) {
+    return Drawer(
+      child: FileInfoPanelContent(file: widget.file),
+    );
+  }
+}
+
+/// 以 BottomSheet 形式展示的文件详情
+class _FileInfoSheet extends StatelessWidget {
+  final FileModel file;
+  const _FileInfoSheet({required this.file});
+
+  @override
+  Widget build(BuildContext context) {
+    return DraggableScrollableSheet(
+      initialChildSize: 0.7,
+      minChildSize: 0.4,
+      maxChildSize: 0.95,
+      expand: false,
+      builder: (context, scrollController) {
+        return FileInfoPanelContent(file: file);
+      },
+    );
+  }
+}
+
+/// FileInfoPanel 的可复用内容区（不含 Drawer 壳）
+class FileInfoPanelContent extends StatefulWidget {
+  final FileModel file;
+  const FileInfoPanelContent({super.key, required this.file});
+
+  @override
+  State<FileInfoPanelContent> createState() => _FileInfoPanelContentState();
+}
+
+class _FileInfoPanelContentState extends State<FileInfoPanelContent> {
   FileInfoModel? _fileInfo;
   bool _isLoading = true;
   bool _isCalculatingFolder = false;
@@ -87,58 +134,53 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
     final theme = Theme.of(context);
     final colorScheme = theme.colorScheme;
 
-    return Drawer(
-      child: SafeArea(
-        right: false,
-        child: Column(
-        children: [
-          Container(
-            padding: const EdgeInsets.only(
-              left: 16,
-              right: 8,
-              top: 8,
-              bottom: 12,
+    return Column(
+      children: [
+        Container(
+          padding: const EdgeInsets.only(
+            left: 16,
+            right: 8,
+            top: 8,
+            bottom: 12,
+          ),
+          decoration: BoxDecoration(
+            border: Border(
+              bottom: BorderSide(color: theme.dividerColor.withValues(alpha: 0.2)),
             ),
-            decoration: BoxDecoration(
-              border: Border(
-                bottom: BorderSide(color: theme.dividerColor.withValues(alpha: 0.2)),
+          ),
+          child: Row(
+            children: [
+              FileIconUtils.buildIconWidget(
+                context: context,
+                file: widget.file,
+                size: 32,
+                iconSize: 18,
+                borderRadius: 8,
               ),
-            ),
-            child: Row(
-              children: [
-                FileIconUtils.buildIconWidget(
-                  context: context,
-                  file: widget.file,
-                  size: 32,
-                  iconSize: 18,
-                  borderRadius: 8,
+              const SizedBox(width: 12),
+              Expanded(
+                child: Text(
+                  widget.file.name,
+                  style: theme.textTheme.titleMedium,
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
                 ),
-                const SizedBox(width: 12),
-                Expanded(
-                  child: Text(
-                    widget.file.name,
-                    style: theme.textTheme.titleMedium,
-                    maxLines: 1,
-                    overflow: TextOverflow.ellipsis,
-                  ),
-                ),
-                IconButton(
-                  icon: const Icon(LucideIcons.x),
-                  onPressed: () => Navigator.of(context).pop(),
-                ),
-              ],
-            ),
+              ),
+              IconButton(
+                icon: const Icon(LucideIcons.x),
+                onPressed: () => Navigator.of(context).pop(),
+              ),
+            ],
           ),
-          Expanded(
-            child: _isLoading
-                ? const Center(child: CircularProgressIndicator())
-                : _error != null
-                    ? _buildError(theme)
-                    : _buildContent(theme, colorScheme),
-          ),
-        ],
         ),
-      ),
+        Expanded(
+          child: _isLoading
+              ? const Center(child: CircularProgressIndicator())
+              : _error != null
+                  ? _buildError(theme)
+                  : _buildContent(theme, colorScheme),
+        ),
+      ],
     );
   }
 
@@ -179,7 +221,6 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
         mainAxisSize: MainAxisSize.min,
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
-          // 类型标签
           Container(
             padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
             decoration: BoxDecoration(
@@ -196,8 +237,6 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
             ),
           ),
           const SizedBox(height: 16),
-
-          // 基本信息
           _buildInfoRow(LucideIcons.folderOpen, '位置', Uri.decodeComponent(file.relativePath)),
           if (file.isFile)
             _buildInfoRow(
@@ -210,7 +249,6 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
           if (file.owned != null)
             _buildInfoRow(LucideIcons.shield, '所有者', file.owned! ? '是' : '否'),
 
-          // 文件扩展信息
           if (file.isFile && extendedInfo != null) ...[
             const SizedBox(height: 12),
             Divider(color: theme.dividerColor.withValues(alpha: 0.3)),
@@ -234,7 +272,6 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
               ),
           ],
 
-          // 版本历史
           if (file.isFile && versionEntities.isNotEmpty) ...[
             const SizedBox(height: 12),
             Divider(color: theme.dividerColor.withValues(alpha: 0.3)),
@@ -242,7 +279,6 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
             _buildVersionSection(theme, colorScheme, versionEntities),
           ],
 
-          // 文件夹信息
           if (file.isFolder) ...[
             const SizedBox(height: 12),
             Divider(color: theme.dividerColor.withValues(alpha: 0.3)),
@@ -488,8 +524,6 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
     );
   }
 
-  // ─── 版本操作 ───
-
   void _openVersion(EntityModel entity) {
     final file = _fileInfo!.file;
     if (!FileTypeUtils.isPreviewable(file.name)) {
@@ -601,8 +635,6 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
     }
   }
 
-  // ─── 文件夹摘要 ───
-
   Widget _buildFolderSummary(ThemeData theme, ColorScheme colorScheme) {
     final summary = _fileInfo?.folderSummary;
 

lib/presentation/widgets/file_list_header.dart

@@ -1,18 +1,23 @@
 import 'package:flutter/material.dart';
 
-/// 文件列表表头（桌面端）
+import '../../core/constants/sort_options.dart';
+
+/// 文件列表表头（桌面端），支持点击排序
 class FileListHeader extends StatelessWidget {
   final bool showCheckbox;
-  const FileListHeader({super.key, this.showCheckbox = false});
+  final SortOption? currentSort;
+  final ValueChanged<SortOption>? onSort;
+
+  const FileListHeader({
+    super.key,
+    this.showCheckbox = false,
+    this.currentSort,
+    this.onSort,
+  });
 
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
-    final style = TextStyle(
-      color: theme.hintColor,
-      fontSize: 12,
-      fontWeight: FontWeight.w500,
-    );
 
     return Container(
       padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 8),
@@ -26,11 +31,77 @@ class FileListHeader extends StatelessWidget {
           if (showCheckbox) const SizedBox(width: 40),
           // 图标占位
           const SizedBox(width: 36 + 16),
-          Expanded(flex: 5, child: Text('名称', style: style)),
-          Expanded(flex: 2, child: Text('修改日期', style: style)),
-          Expanded(flex: 1, child: Text('大小', style: style)),
+          Expanded(
+            flex: 5,
+            child: _buildSortHeader(context, theme, SortField.name, '名称'),
+          ),
+          Expanded(
+            flex: 2,
+            child: _buildSortHeader(
+              context,
+              theme,
+              SortField.updatedAt,
+              '修改日期',
+            ),
+          ),
+          Expanded(
+            flex: 1,
+            child: _buildSortHeader(context, theme, SortField.size, '大小'),
+          ),
         ],
       ),
     );
   }
+
+  Widget _buildSortHeader(
+    BuildContext context,
+    ThemeData theme,
+    SortField field,
+    String label,
+  ) {
+    final isActive = currentSort?.field == field;
+    final style = TextStyle(
+      color: isActive ? theme.colorScheme.primary : theme.hintColor,
+      fontSize: 12,
+      fontWeight: isActive ? FontWeight.w600 : FontWeight.w500,
+    );
+
+    return InkWell(
+      onTap: () => _onHeaderTap(field),
+      borderRadius: BorderRadius.circular(4),
+      child: Padding(
+        padding: const EdgeInsets.symmetric(vertical: 2),
+        child: Row(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            Text(label, style: style),
+            if (isActive) ...[
+              const SizedBox(width: 4),
+              Icon(
+                currentSort!.direction == SortDirection.asc
+                    ? Icons.arrow_upward
+                    : Icons.arrow_downward,
+                size: 14,
+                color: theme.colorScheme.primary,
+              ),
+            ],
+          ],
+        ),
+      ),
+    );
+  }
+
+  void _onHeaderTap(SortField field) {
+    if (onSort == null) return;
+    if (currentSort?.field == field) {
+      // 同一列：切换方向
+      final newDir = currentSort!.direction == SortDirection.asc
+          ? SortDirection.desc
+          : SortDirection.asc;
+      onSort!(SortOption(field, newDir));
+    } else {
+      // 新列：默认升序
+      onSort!(SortOption(field, SortDirection.asc));
+    }
+  }
 }

lib/presentation/widgets/file_list_item.dart

@@ -18,6 +18,7 @@ class FileListItem extends StatelessWidget {
   final VoidCallback? onSelect;
   final VoidCallback? onDownload;
   final VoidCallback? onOpenInBrowser;
+  final VoidCallback? onOpenInCloudreveApp;
   final VoidCallback? onRename;
   final VoidCallback? onMove;
   final VoidCallback? onCopy;
@@ -40,6 +41,7 @@ class FileListItem extends StatelessWidget {
     this.onSelect,
     this.onDownload,
     this.onOpenInBrowser,
+    this.onOpenInCloudreveApp,
     this.onRename,
     this.onMove,
     this.onCopy,
@@ -51,17 +53,19 @@ class FileListItem extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return _FileListItemHover(
-      file: file,
-      isSelected: isSelected,
-      isHighlighted: isHighlighted,
-      index: index,
-      isDesktop: isDesktop,
-      showCheckbox: showCheckbox,
-      tapToShowMenu: tapToShowMenu,
-      onTap: tapToShowMenu ? null : onTap,
-      onLongPress: () => _showMenu(context),
-      onSelect: onSelect,
+    return RepaintBoundary(
+      child: _FileListItemHover(
+        file: file,
+        isSelected: isSelected,
+        isHighlighted: isHighlighted,
+        index: index,
+        isDesktop: isDesktop,
+        showCheckbox: showCheckbox,
+        tapToShowMenu: tapToShowMenu,
+        onTap: tapToShowMenu ? null : onTap,
+        onLongPress: () => _showMenu(context),
+        onSelect: onSelect,
+      ),
     );
   }
 
@@ -71,6 +75,7 @@ class FileListItem extends StatelessWidget {
       hasSelect: onSelect != null,
       hasDownload: onDownload != null,
       hasOpenInBrowser: onOpenInBrowser != null,
+      hasOpenInCloudreveApp: onOpenInCloudreveApp != null,
       hasRename: onRename != null,
       hasMove: onMove != null,
       hasCopy: onCopy != null,
@@ -87,6 +92,8 @@ class FileListItem extends StatelessWidget {
         onDownload?.call();
       case FileMenuAction.openInBrowser:
         onOpenInBrowser?.call();
+      case FileMenuAction.openInCloudreveApp:
+        onOpenInCloudreveApp?.call();
       case FileMenuAction.rename:
         onRename?.call();
       case FileMenuAction.move:

lib/presentation/widgets/file_menu_helper.dart

@@ -7,6 +7,7 @@ enum FileMenuAction {
   select,
   download,
   openInBrowser,
+  openInCloudreveApp,
   rename,
   move,
   copy,
@@ -22,6 +23,7 @@ Future<FileMenuAction?> showFileMenu({
   required bool hasSelect,
   required bool hasDownload,
   required bool hasOpenInBrowser,
+  bool hasOpenInCloudreveApp = false,
   required bool hasRename,
   required bool hasMove,
   required bool hasCopy,
@@ -87,6 +89,17 @@ Future<FileMenuAction?> showFileMenu({
             ],
           ),
         ),
+      if (hasOpenInCloudreveApp)
+        const PopupMenuItem(
+          value: FileMenuAction.openInCloudreveApp,
+          child: Row(
+            children: [
+              Icon(Icons.web_asset, size: 20),
+              SizedBox(width: 12),
+              Text('在 Cloudreve 中打开'),
+            ],
+          ),
+        ),
       if (hasRename)
         const PopupMenuItem(
           value: FileMenuAction.rename,

lib/presentation/widgets/folder_picker.dart

@@ -132,7 +132,7 @@ class _FolderPickerState extends State<FolderPicker> {
     return InkWell(
       onTap: () => _enterFolder(folder),
       child: Padding(
-        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+        padding: const EdgeInsets.symmetric(horizontal: 4, vertical: 8),
         child: Row(
           children: [
             Container(
@@ -163,7 +163,7 @@ class _FolderPickerState extends State<FolderPicker> {
       crossAxisAlignment: CrossAxisAlignment.start,
       children: [
         Padding(
-          padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
+          padding: const EdgeInsets.symmetric(horizontal: 4, vertical: 8),
           child: Row(
             children: [
               Expanded(

lib/presentation/widgets/search_dialog.dart

@@ -1,11 +1,13 @@
 import 'dart:async';
 
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:lucide_icons/lucide_icons.dart';
 import 'package:provider/provider.dart';
 
 import '../../core/utils/date_utils.dart' as date_utils;
 import '../../core/utils/file_icon_utils.dart';
+import '../../core/utils/file_utils.dart';
 import '../../data/models/file_model.dart';
 import '../../services/file_service.dart';
 import '../../services/storage_service.dart';
@@ -17,7 +19,12 @@ import 'glassmorphism_container.dart';
 class SearchDialog extends StatefulWidget {
   const SearchDialog({super.key});
 
+  static bool _isShowing = false;
+  static bool get isShowing => _isShowing;
+
   static Future<void> show(BuildContext context) {
+    if (_isShowing) return Future.value();
+    _isShowing = true;
     return showGeneralDialog(
       context: context,
       barrierDismissible: true,
@@ -38,8 +45,9 @@ class SearchDialog extends StatefulWidget {
           child: FadeTransition(opacity: fadeAnim, child: child),
         );
       },
-      pageBuilder: (context, animation, secondaryAnimation) => const SearchDialog(),
-    );
+      pageBuilder: (context, animation, secondaryAnimation) =>
+          const SearchDialog(),
+    ).whenComplete(() => _isShowing = false);
   }
 
   @override
@@ -145,8 +153,10 @@ class _SearchDialogState extends State<SearchDialog> {
 
     // 在 async gap 之前获取所有引用
     final navProvider = Provider.of<NavigationProvider>(context, listen: false);
-    final fileManager =
-        Provider.of<FileManagerProvider>(context, listen: false);
+    final fileManager = Provider.of<FileManagerProvider>(
+      context,
+      listen: false,
+    );
     final parentPath = _extractParentPath(file.path);
     final filePath = file.path;
 
@@ -181,25 +191,40 @@ class _SearchDialogState extends State<SearchDialog> {
     final isWide = screenWidth >= 600;
     final dialogWidth = isWide ? 560.0 : screenWidth - 32.0;
 
-    return Center(
-      child: Container(
-        width: dialogWidth,
-        constraints: BoxConstraints(maxHeight: screenHeight * 0.75),
-        child: GlassmorphismContainer(
-          borderRadius: 16,
-          sigmaX: 20,
-          sigmaY: 20,
-          child: ClipRRect(
-            borderRadius: BorderRadius.circular(16),
-            child: Material(
-              color: Colors.transparent,
-              child: Column(
-                mainAxisSize: MainAxisSize.min,
-                children: [
-                  _buildSearchInput(context),
-                  const Divider(height: 1),
-                  Flexible(child: _buildBody(context)),
-                ],
+    return Shortcuts(
+      shortcuts: <ShortcutActivator, Intent>{
+        const SingleActivator(LogicalKeyboardKey.escape): DismissIntent(),
+      },
+      child: Actions(
+        actions: <Type, Action<Intent>>{
+          DismissIntent: CallbackAction<DismissIntent>(
+            onInvoke: (_) {
+              Navigator.of(context).pop();
+              return null;
+            },
+          ),
+        },
+        child: Center(
+          child: Container(
+            width: dialogWidth,
+            constraints: BoxConstraints(maxHeight: screenHeight * 0.75),
+            child: GlassmorphismContainer(
+              borderRadius: 16,
+              sigmaX: 20,
+              sigmaY: 20,
+              child: ClipRRect(
+                borderRadius: BorderRadius.circular(16),
+                child: Material(
+                  color: Colors.transparent,
+                  child: Column(
+                    mainAxisSize: MainAxisSize.min,
+                    children: [
+                      _buildSearchInput(context),
+                      const Divider(height: 1),
+                      Flexible(child: _buildBody(context)),
+                    ],
+                  ),
+                ),
               ),
             ),
           ),
@@ -286,16 +311,20 @@ class _SearchDialogState extends State<SearchDialog> {
           child: Column(
             mainAxisSize: MainAxisSize.min,
             children: [
-              Icon(LucideIcons.alertCircle,
-                  size: 40, color: colorScheme.error.withValues(alpha: 0.7)),
+              Icon(
+                LucideIcons.alertCircle,
+                size: 40,
+                color: colorScheme.error.withValues(alpha: 0.7),
+              ),
               const SizedBox(height: 8),
-              Text(_errorMessage!,
-                  style: TextStyle(color: theme.hintColor),
-                  textAlign: TextAlign.center),
+              Text(
+                _errorMessage!,
+                style: TextStyle(color: theme.hintColor),
+                textAlign: TextAlign.center,
+              ),
               const SizedBox(height: 12),
               FilledButton.tonal(
-                onPressed: () =>
-                    _performSearch(_searchController.text.trim()),
+                onPressed: () => _performSearch(_searchController.text.trim()),
                 child: const Text('重试'),
               ),
             ],
@@ -316,12 +345,13 @@ class _SearchDialogState extends State<SearchDialog> {
             child: Column(
               mainAxisSize: MainAxisSize.min,
               children: [
-                Icon(LucideIcons.searchX,
-                    size: 40,
-                    color: theme.hintColor.withValues(alpha: 0.5)),
+                Icon(
+                  LucideIcons.searchX,
+                  size: 40,
+                  color: theme.hintColor.withValues(alpha: 0.5),
+                ),
                 const SizedBox(height: 8),
-                Text('未找到匹配文件',
-                    style: TextStyle(color: theme.hintColor)),
+                Text('未找到匹配文件', style: TextStyle(color: theme.hintColor)),
               ],
             ),
           ),
@@ -330,8 +360,7 @@ class _SearchDialogState extends State<SearchDialog> {
       return Padding(
         padding: const EdgeInsets.symmetric(vertical: 32),
         child: Center(
-          child: Text('输入关键词搜索文件',
-              style: TextStyle(color: theme.hintColor)),
+          child: Text('输入关键词搜索文件', style: TextStyle(color: theme.hintColor)),
         ),
       );
     }
@@ -364,17 +393,21 @@ class _SearchDialogState extends State<SearchDialog> {
             children: [
               Icon(LucideIcons.history, size: 16, color: theme.hintColor),
               const SizedBox(width: 6),
-              Text('搜索历史',
-                  style: TextStyle(
-                      fontSize: 13,
-                      fontWeight: FontWeight.w500,
-                      color: theme.hintColor)),
+              Text(
+                '搜索历史',
+                style: TextStyle(
+                  fontSize: 13,
+                  fontWeight: FontWeight.w500,
+                  color: theme.hintColor,
+                ),
+              ),
               const Spacer(),
               GestureDetector(
                 onTap: _clearHistory,
-                child: Text('清除',
-                    style:
-                        TextStyle(fontSize: 12, color: colorScheme.primary)),
+                child: Text(
+                  '清除',
+                  style: TextStyle(fontSize: 12, color: colorScheme.primary),
+                ),
               ),
             ],
           ),
@@ -416,13 +449,15 @@ class _SearchDialogState extends State<SearchDialog> {
                   Text(
                     file.name,
                     style: const TextStyle(
-                        fontWeight: FontWeight.w500, fontSize: 14),
+                      fontWeight: FontWeight.w500,
+                      fontSize: 14,
+                    ),
                     maxLines: 1,
                     overflow: TextOverflow.ellipsis,
                   ),
                   const SizedBox(height: 2),
                   Text(
-                    Uri.decodeComponent(file.relativePath),
+                    FileUtils.safeDecodePathSegment(file.relativePath),
                     style: TextStyle(fontSize: 12, color: theme.hintColor),
                     maxLines: 1,
                     overflow: TextOverflow.ellipsis,

lib/presentation/widgets/selection_toolbar.dart

@@ -3,8 +3,10 @@ import 'package:flutter/material.dart';
 /// 选择工具栏组件
 class SelectionToolbar extends StatelessWidget {
   final int selectionCount;
+  final int totalCount;
   final VoidCallback onCancel;
-  final VoidCallback? onRename;
+  final VoidCallback? onSelectAll;
+  final VoidCallback? onMore;
   final VoidCallback? onMove;
   final VoidCallback? onCopy;
   final VoidCallback onDelete;
@@ -12,8 +14,10 @@ class SelectionToolbar extends StatelessWidget {
   const SelectionToolbar({
     super.key,
     required this.selectionCount,
+    this.totalCount = 0,
     required this.onCancel,
-    this.onRename,
+    this.onSelectAll,
+    this.onMore,
     this.onMove,
     this.onCopy,
     required this.onDelete,
@@ -45,11 +49,19 @@ class SelectionToolbar extends StatelessWidget {
             onPressed: onCancel,
             tooltip: '取消选择',
           ),
-          if (selectionCount == 1 && onRename != null)
+          if (onSelectAll != null && selectionCount < totalCount)
             IconButton(
-              icon: const Icon(Icons.edit),
-              onPressed: onRename,
-              tooltip: '重命名',
+              icon: const Icon(Icons.select_all),
+              onPressed: onSelectAll,
+              tooltip: '全选',
+            ),
+          if (selectionCount == 1 && onMore != null)
+            IconButton(
+              icon: Icon(Theme.of(context).platform == TargetPlatform.iOS
+                  ? Icons.more_horiz
+                  : Icons.more_vert),
+              onPressed: onMore,
+              tooltip: '更多',
             ),
           if (onMove != null)
             IconButton(

lib/presentation/widgets/sync_stats_card.dart

@@ -0,0 +1,363 @@
+import 'package:fl_chart/fl_chart.dart';
+import 'package:flutter/material.dart';
+
+/// 同步统计卡片
+/// 宽屏（>=400）：左饼图 + 右双列明细（左5右4）
+/// 窄屏（<400）：上饼图+5指标，下4指标
+class SyncStatsCard extends StatelessWidget {
+  final int uploaded;
+  final int downloaded;
+  final int renamed;
+  final int moved;
+  final int conflicts;
+  final int failed;
+  final int deletedLocal;
+  final int deletedRemote;
+  final int skipped;
+
+  const SyncStatsCard({
+    super.key,
+    required this.uploaded,
+    required this.downloaded,
+    required this.renamed,
+    required this.moved,
+    required this.conflicts,
+    required this.failed,
+    required this.deletedLocal,
+    required this.deletedRemote,
+    required this.skipped,
+  });
+
+  static const _colorUploaded = Color(0xFF8E5D67);
+  static const _colorDownloaded = Color(0xFF8BA7DA);
+  static const _colorRenamed = Color(0xFFD4AF37);
+  static const _colorMoved = Color(0xFF67B5B1);
+  static const _colorConflicts = Color(0xFFE69A6A);
+  static const _colorFailed = Color(0xFFD9534F);
+  static const _colorDeletedLocal = Color(0xFFE57373);
+  static const _colorDeletedRemote = Color(0xFFEF9A9A);
+  static const _colorSkipped = Color(0xFFB0BEC5);
+
+  static const _narrowThreshold = 400.0;
+
+  int get _total =>
+      uploaded +
+      downloaded +
+      renamed +
+      moved +
+      conflicts +
+      failed +
+      deletedLocal +
+      deletedRemote +
+      skipped;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+
+    final decoration = BoxDecoration(
+      gradient: LinearGradient(
+        begin: Alignment.topLeft,
+        end: Alignment.bottomRight,
+        colors: [
+          theme.colorScheme.primaryContainer.withValues(alpha: 0.3),
+          theme.colorScheme.tertiaryContainer.withValues(alpha: 0.3),
+        ],
+      ),
+      borderRadius: BorderRadius.circular(24),
+    );
+
+    return LayoutBuilder(
+      builder: (context, constraints) {
+        final isWide = constraints.maxWidth >= _narrowThreshold;
+
+        if (isWide) {
+          return Container(
+            width: double.infinity,
+            padding: const EdgeInsets.all(24),
+            decoration: decoration,
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Center(
+                  child: Text(
+                    '同步数据概览',
+                    style: theme.textTheme.titleSmall?.copyWith(
+                      fontWeight: FontWeight.w600,
+                    ),
+                  ),
+                ),
+                const SizedBox(height: 16),
+                Row(
+                  children: [
+                    // 饼图
+                    Expanded(
+                      flex: 4,
+                      child: Stack(
+                        alignment: Alignment.center,
+                        children: [
+                          SizedBox(
+                            height: 160,
+                            child: PieChart(
+                              PieChartData(
+                                sectionsSpace: 4,
+                                centerSpaceRadius: 42,
+                                sections: _buildSections(),
+                              ),
+                            ),
+                          ),
+                          Text(
+                            '$_total',
+                            style: theme.textTheme.bodyLarge?.copyWith(
+                              fontWeight: FontWeight.bold,
+                            ),
+                          ),
+                        ],
+                      ),
+                    ),
+                    const SizedBox(width: 16),
+                    // 双列明细
+                    Expanded(
+                      flex: 6,
+                      child: Row(
+                        crossAxisAlignment: CrossAxisAlignment.center,
+                        children: [
+                          // 左列 5 项
+                          Expanded(
+                            child: Column(
+                              mainAxisSize: MainAxisSize.min,
+                              crossAxisAlignment: CrossAxisAlignment.start,
+                              children: [
+                                _buildRow(
+                                  '上传',
+                                  uploaded,
+                                  _colorUploaded,
+                                  theme,
+                                ),
+                                _buildRow(
+                                  '下载',
+                                  downloaded,
+                                  _colorDownloaded,
+                                  theme,
+                                ),
+                                _buildRow('移动', moved, _colorMoved, theme),
+                                _buildRow(
+                                  '冲突',
+                                  conflicts,
+                                  _colorConflicts,
+                                  theme,
+                                ),
+                                _buildRow('失败', failed, _colorFailed, theme),
+                              ],
+                            ),
+                          ),
+                          const SizedBox(width: 12),
+                          // 右列 4 项
+                          Expanded(
+                            child: Column(
+                              mainAxisSize: MainAxisSize.min,
+                              crossAxisAlignment: CrossAxisAlignment.start,
+                              children: [
+                                _buildRow('重命名', renamed, _colorRenamed, theme),
+                                _buildRow(
+                                  '删本地',
+                                  deletedLocal,
+                                  _colorDeletedLocal,
+                                  theme,
+                                ),
+                                _buildRow(
+                                  '删远程',
+                                  deletedRemote,
+                                  _colorDeletedRemote,
+                                  theme,
+                                ),
+                                _buildRow('跳过', skipped, _colorSkipped, theme),
+                              ],
+                            ),
+                          ),
+                        ],
+                      ),
+                    ),
+                  ],
+                ),
+              ],
+            ),
+          );
+        }
+
+        // 窄屏：上下布局
+        return Container(
+          width: double.infinity,
+          padding: const EdgeInsets.fromLTRB(20, 20, 20, 24),
+          decoration: decoration,
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Center(
+                child: Text(
+                  '同步数据概览',
+                  style: theme.textTheme.titleSmall?.copyWith(
+                    fontWeight: FontWeight.w600,
+                  ),
+                ),
+              ),
+              const SizedBox(height: 12),
+              // 上半区：饼图 + 5 个主指标
+              Row(
+                children: [
+                  SizedBox(
+                    width: 120,
+                    height: 120,
+                    child: Stack(
+                      alignment: Alignment.center,
+                      children: [
+                        PieChart(
+                          PieChartData(
+                            sectionsSpace: 3,
+                            centerSpaceRadius: 32,
+                            sections: _buildSections(),
+                          ),
+                        ),
+                        Text(
+                          '$_total',
+                          style: theme.textTheme.bodyLarge?.copyWith(
+                            fontWeight: FontWeight.bold,
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                  const SizedBox(width: 20),
+                  Expanded(
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        _buildRow('上传', uploaded, _colorUploaded, theme),
+                        _buildRow('下载', downloaded, _colorDownloaded, theme),
+                        _buildRow('移动', moved, _colorMoved, theme),
+                        _buildRow('冲突', conflicts, _colorConflicts, theme),
+                        _buildRow('失败', failed, _colorFailed, theme),
+                      ],
+                    ),
+                  ),
+                ],
+              ),
+              const SizedBox(height: 12),
+              // 下半区：4 个副指标
+              Row(
+                children: [
+                  _buildSubItem('重命名', renamed, _colorRenamed, theme),
+                  const SizedBox(width: 16),
+                  _buildSubItem('删本地', deletedLocal, _colorDeletedLocal, theme),
+                  const SizedBox(width: 16),
+                  _buildSubItem(
+                    '删远程',
+                    deletedRemote,
+                    _colorDeletedRemote,
+                    theme,
+                  ),
+                  const SizedBox(width: 16),
+                  _buildSubItem('跳过', skipped, _colorSkipped, theme),
+                ],
+              ),
+            ],
+          ),
+        );
+      },
+    );
+  }
+
+  /// 指标行：圆点 + 固定宽标签 + 数字，保证数字对齐
+  Widget _buildRow(String label, int count, Color color, ThemeData theme) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(vertical: 3.5),
+      child: Row(
+        children: [
+          Container(
+            width: 8,
+            height: 8,
+            decoration: BoxDecoration(color: color, shape: BoxShape.circle),
+          ),
+          const SizedBox(width: 6),
+          SizedBox(
+            width: 40,
+            child: Text(
+              label,
+              style: TextStyle(fontSize: 12, color: theme.hintColor),
+            ),
+          ),
+          Text(
+            '$count',
+            style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 13),
+          ),
+        ],
+      ),
+    );
+  }
+
+  /// 窄屏副指标：圆点 + 标签 + 数字（紧凑，Expanded 均分）
+  Widget _buildSubItem(String label, int count, Color color, ThemeData theme) {
+    return Expanded(
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Container(
+            width: 7,
+            height: 7,
+            decoration: BoxDecoration(color: color, shape: BoxShape.circle),
+          ),
+          const SizedBox(width: 4),
+          Flexible(
+            child: Text(
+              label,
+              style: TextStyle(fontSize: 11, color: theme.hintColor),
+              overflow: TextOverflow.ellipsis,
+            ),
+          ),
+          const SizedBox(width: 3),
+          Text(
+            '$count',
+            style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 12),
+          ),
+        ],
+      ),
+    );
+  }
+
+  List<PieChartSectionData> _buildSections() {
+    if (_total == 0) {
+      return [
+        PieChartSectionData(
+          value: 1,
+          color: const Color(0xFFE0E0E0),
+          radius: 14,
+          showTitle: false,
+        ),
+      ];
+    }
+
+    final entries = [
+      (uploaded, _colorUploaded, 18.0),
+      (downloaded, _colorDownloaded, 16.0),
+      (renamed, _colorRenamed, 14.0),
+      (moved, _colorMoved, 12.0),
+      (conflicts, _colorConflicts, 10.0),
+      (failed, _colorFailed, 8.0),
+      (deletedLocal, _colorDeletedLocal, 8.0),
+      (deletedRemote, _colorDeletedRemote, 6.0),
+      (skipped, _colorSkipped, 6.0),
+    ];
+
+    return entries
+        .where((e) => e.$1 > 0)
+        .map(
+          (e) => PieChartSectionData(
+            value: e.$1.toDouble(),
+            color: e.$2,
+            radius: e.$3,
+            showTitle: false,
+          ),
+        )
+        .toList();
+  }
+}

lib/presentation/widgets/update_prompt.dart

@@ -0,0 +1,100 @@
+import 'package:flutter/material.dart';
+
+import '../../data/models/app_update_model.dart';
+import '../../services/update_service.dart';
+import 'toast_helper.dart';
+
+class UpdatePrompt extends StatefulWidget {
+  final Widget child;
+
+  const UpdatePrompt({super.key, required this.child});
+
+  @override
+  State<UpdatePrompt> createState() => _UpdatePromptState();
+}
+
+class _UpdatePromptState extends State<UpdatePrompt> {
+  static bool _checkedThisRun = false;
+  bool _dialogVisible = false;
+
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addPostFrameCallback((_) => _checkUpdate());
+  }
+
+  Future<void> _checkUpdate() async {
+    if (_checkedThisRun || _dialogVisible || !mounted) return;
+    _checkedThisRun = true;
+
+    final update = await UpdateService.instance.checkForUpdate();
+    if (update == null || !mounted) return;
+    final shouldShow = await UpdateService.instance.shouldShowPrompt(update);
+    if (!shouldShow || !mounted) return;
+
+    _dialogVisible = true;
+    try {
+      await _showUpdateDialog(update);
+    } finally {
+      _dialogVisible = false;
+    }
+  }
+
+  Future<void> _showUpdateDialog(AppUpdateInfo update) async {
+    await showDialog<void>(
+      context: context,
+      barrierDismissible: false,
+      builder: (dialogContext) {
+        Future<void> openDownloadsPage() async {
+          try {
+            await UpdateService.instance.openDownloadsPage();
+            if (dialogContext.mounted) Navigator.of(dialogContext).pop();
+          } catch (e) {
+            ToastHelper.failure('打开下载页面失败: $e');
+          }
+        }
+
+        Future<void> skipPrompt() async {
+          await UpdateService.instance.skipPromptForFiveDays(update);
+          if (dialogContext.mounted) Navigator.of(dialogContext).pop();
+        }
+
+        final releaseNotes = (update.description ?? '').trim();
+
+        return AlertDialog(
+          title: Text('发现新版本 ${update.version}'),
+          content: ConstrainedBox(
+            constraints: const BoxConstraints(maxWidth: 420, maxHeight: 360),
+            child: SingleChildScrollView(
+              child: Column(
+                mainAxisSize: MainAxisSize.min,
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Text('新版本号：${update.version}'),
+                  const SizedBox(height: 12),
+                  Text(
+                    '版本日志',
+                    style: Theme.of(dialogContext).textTheme.titleSmall,
+                  ),
+                  const SizedBox(height: 6),
+                  Text(releaseNotes.isEmpty ? update.title : releaseNotes),
+                ],
+              ),
+            ),
+          ),
+          actions: [
+            TextButton(onPressed: skipPrompt, child: const Text('跳过')),
+            TextButton(
+              onPressed: () => Navigator.of(dialogContext).pop(),
+              child: const Text('取消'),
+            ),
+            FilledButton(onPressed: openDownloadsPage, child: const Text('更新')),
+          ],
+        );
+      },
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) => widget.child;
+}

lib/router/app_router.dart

@@ -7,6 +7,8 @@ import '../presentation/pages/recycle_bin/recycle_bin_page.dart';
 import '../presentation/pages/webdav/webdav_page.dart';
 import '../presentation/pages/remote_download/remote_download_page.dart';
 import '../presentation/pages/settings/settings_page.dart';
+import '../presentation/pages/sync/sync_page_android.dart';
+import '../presentation/pages/sync/sync_settings_page.dart';
 import '../presentation/pages/preview/image_preview_page.dart';
 import '../presentation/pages/preview/pdf_preview_page.dart';
 import '../presentation/pages/preview/video_preview_page.dart';
@@ -14,6 +16,9 @@ import '../presentation/pages/preview/audio_preview_page.dart';
 import '../presentation/pages/preview/document_preview_page.dart';
 import '../presentation/pages/preview/markdown_preview_page.dart';
 import '../presentation/pages/files/category_files_page.dart';
+import '../presentation/pages/share/share_link_page.dart';
+import '../presentation/pages/preview/cloudreve_file_app_page.dart';
+import '../services/share_link_service.dart';
 import '../data/models/file_model.dart';
 
 /// 路由名称
@@ -35,6 +40,10 @@ class RouteNames {
   static const String documentPreview = '/document-preview';
   static const String markdownPreview = '/markdown-preview';
   static const String categoryFiles = '/category-files';
+  static const String syncStatus = '/sync-status';
+  static const String syncSettings = '/sync-settings';
+  static const String shareLink = '/share-link';
+  static const String cloudreveFileApp = '/cloudreve-file-app';
 }
 
 /// 应用路由
@@ -218,6 +227,47 @@ class AppRouter {
           ),
         );
 
+      case RouteNames.syncSettings:
+        return MaterialPageRoute(
+          settings: settings,
+          builder: (context) => const SyncSettingsPage(),
+        );
+
+      case RouteNames.syncStatus:
+        return MaterialPageRoute(
+          settings: settings,
+          builder: (context) => const SyncPageAndroid(),
+        );
+
+      case RouteNames.shareLink:
+        final args = settings.arguments;
+        if (args is ShareLinkCandidate) {
+          return MaterialPageRoute(
+            settings: settings,
+            builder: (context) => ShareLinkPage(candidate: args),
+          );
+        }
+        return MaterialPageRoute(
+          settings: settings,
+          builder: (context) => const SplashPage(),
+        );
+
+      case RouteNames.cloudreveFileApp:
+        final args = settings.arguments;
+        if (args is Map<String, dynamic>) {
+          return MaterialPageRoute(
+            settings: settings,
+            builder: (context) => CloudreveFileAppPage(
+              file: args['file'] as FileModel,
+              preferredAction: args['preferredAction'] as String?,
+            ),
+          );
+        }
+        return MaterialPageRoute(
+          settings: settings,
+          builder: (context) => const SplashPage(),
+        );
+
       default:
         return MaterialPageRoute(
           settings: settings,

lib/services/announcement_service.dart

@@ -0,0 +1,108 @@
+import 'dart:convert';
+
+import 'package:crypto/crypto.dart';
+
+import 'api_service.dart';
+import 'storage_service.dart';
+import '../core/constants/storage_keys.dart';
+
+class SiteAnnouncement {
+  final String title;
+  final String html;
+  final String baseUrl;
+  final String fingerprint;
+
+  const SiteAnnouncement({
+    required this.title,
+    required this.html,
+    required this.baseUrl,
+    required this.fingerprint,
+  });
+}
+
+/// 登录后公告服务。
+///
+/// Cloudreve V4 SiteConfig 的公告字段是 site_notice。
+/// 不读取 custom_html.headless_bottom / sidebar_bottom，那些是页面装饰 HTML。
+///
+/// 弹窗策略：
+/// - 公告为空：不弹；
+/// - 当前公告内容和用户上次关闭时一致：不弹；
+/// - 公告内容变化：重新弹。
+class AnnouncementService {
+  AnnouncementService._();
+
+  static final AnnouncementService instance = AnnouncementService._();
+
+  bool _shownInSession = false;
+
+  /// 兼容旧调用。新的判断以持久化 fingerprint 为准。
+  bool get hasShown => _shownInSession;
+
+  /// 兼容旧调用。新的业务请使用 [markDismissed]。
+  void markShown() {
+    _shownInSession = true;
+  }
+
+  Future<SiteAnnouncement?> getSiteNotice() async {
+    final response = await ApiService.instance.get<Map<String, dynamic>>(
+      '/site/config/basic',
+    );
+
+    final data = _asMap(response['data']) ?? response;
+    final notice = data['site_notice']?.toString().trim();
+
+    if (notice == null || notice.isEmpty) {
+      return null;
+    }
+
+    final baseUrl = ApiService.instance.dio.options.baseUrl;
+    return SiteAnnouncement(
+      title: '公告',
+      html: notice,
+      baseUrl: baseUrl,
+      fingerprint: _fingerprint(baseUrl: baseUrl, html: notice),
+    );
+  }
+
+  /// 只返回需要弹出的公告。
+  ///
+  /// 用户关闭过同一条公告后，后续启动不会重复弹；站点公告内容改变后会再次弹。
+  Future<SiteAnnouncement?> getChangedSiteNotice() async {
+    final notice = await getSiteNotice();
+    if (notice == null) return null;
+
+    if (_shownInSession) return null;
+
+    final dismissedFingerprint = await StorageService.instance.getString(
+      StorageKeys.siteAnnouncementDismissedFingerprint,
+    );
+
+    if (dismissedFingerprint == notice.fingerprint) {
+      _shownInSession = true;
+      return null;
+    }
+
+    return notice;
+  }
+
+  /// 用户关闭公告后调用。
+  Future<void> markDismissed(SiteAnnouncement announcement) async {
+    _shownInSession = true;
+    await StorageService.instance.setString(
+      StorageKeys.siteAnnouncementDismissedFingerprint,
+      announcement.fingerprint,
+    );
+  }
+
+  String _fingerprint({required String baseUrl, required String html}) {
+    final normalized = '${baseUrl.trim()}\n${html.trim()}';
+    return sha256.convert(utf8.encode(normalized)).toString();
+  }
+
+  Map<String, dynamic>? _asMap(dynamic value) {
+    if (value is Map<String, dynamic>) return value;
+    if (value is Map) return Map<String, dynamic>.from(value);
+    return null;
+  }
+}

lib/services/api_service.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 
 import 'package:dio/dio.dart';
 import '../config/api_config.dart';
+import '../services/storage_service.dart';
 import '../core/exceptions/app_exception.dart';
 import '../core/utils/app_logger.dart';
 
@@ -9,7 +10,7 @@ import '../core/utils/app_logger.dart';
 class ApiResponse<T> {
   final int code;
   final String message;
-  final T? data;
+  final dynamic data;
   final String? error;
   final String? correlationId;
 
@@ -25,7 +26,7 @@ class ApiResponse<T> {
     return ApiResponse<T>(
       code: json['code'] as int? ?? 0,
       message: json['msg'] as String? ?? '',
-      data: json['data'] as T?,
+      data: json['data'],
       error: json['error'] as String?,
       correlationId: json['correlation_id'] as String?,
     );
@@ -120,6 +121,11 @@ class ApiService {
             options.headers['Authorization'] = 'Bearer $token';
           }
         }
+        // 附加 X-Cr-Client-Id，服务端据此过滤 SSE 自身事件
+        try {
+          final clientId = await StorageService.instance.getOrCreateClientId();
+          options.headers['X-Cr-Client-Id'] = clientId;
+        } catch (_) {}
         return handler.next(options);
       },
     );
@@ -192,6 +198,12 @@ class ApiService {
         AppLogger.d('API Error: ${error.requestOptions.uri} - ${error.message}');
 
         // 检查是否是 401 错误（HTTP 401 或 JSON code: 401）
+        final silent404 =
+            error.requestOptions.extra['silent404'] as bool? ?? false;
+        if (silent404 && error.response?.statusCode == 404) {
+          return handler.next(error);
+        }
+
         bool is401Error = error.response?.statusCode == 401;
         if (!is401Error && error.response?.data is Map<String, dynamic>) {
           final data = error.response!.data as Map<String, dynamic>;
@@ -314,12 +326,16 @@ class ApiService {
     Map<String, dynamic>? queryParameters,
     bool noAuth = false,
     bool isNoData = false,
+    bool silent404 = false,
     Map<String, dynamic>? headers,
   }) async {
     final response = await _dio.get<T>(
       path,
       queryParameters: queryParameters,
-      options: Options(extra: {'noAuth': noAuth}, headers: headers),
+      options: Options(
+        extra: {'noAuth': noAuth, 'silent404': silent404},
+        headers: headers,
+      ),
     );
     // 如果是分享请求, 则不进入 _parseResponse
     if (isNoData) {
@@ -350,9 +366,12 @@ class ApiService {
     AppLogger.d('Response Data: ${response.data}');
     
     var isActivEmail = 0;
-    if (response.statusCode == 200) {
-      Map<String, dynamic>? tmp = response.data as Map<String, dynamic>?;
-      isActivEmail = tmp?['code'] as int;
+    if (response.statusCode == 200 && response.data is Map) {
+      final tmp = Map<String, dynamic>.from(response.data as Map);
+      final code = tmp['code'];
+      if (code is int) {
+        isActivEmail = code;
+      }
     }
 
     if (isNoData || isActivEmail == 203) {
@@ -441,11 +460,18 @@ class ApiService {
   T _parseResponse<T>(Response response) {
     final data = response.data;
     if (data is Map<String, dynamic>) {
-      final apiResponse = ApiResponse<T>.fromJson(data);
+      final apiResponse = ApiResponse<dynamic>.fromJson(data);
       if (!apiResponse.isSuccess && !apiResponse.isContinue) {
         throw ServerException(apiResponse.message, code: apiResponse.code);
       }
-      return apiResponse.data as T;
+      final payload = apiResponse.data;
+      if (payload is T) {
+        return payload;
+      }
+      if (data is T) {
+        return data as T;
+      }
+      return payload as T;
     }
     return data as T;
   }

lib/services/captcha_service.dart

@@ -1,5 +1,7 @@
 import 'dart:convert';
+import 'dart:io';
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
 import '../presentation/pages/auth/captcha_challenge_page.dart';
@@ -30,6 +32,11 @@ class CaptchaService {
   String? _captchaToken;
   bool _isLoadingCaptcha = false;
 
+  // 代理配置（仅 Windows 桌面端）
+  CaptchaProxyConfig? _proxyConfig;
+
+  bool get _isDesktop => !kIsWeb && (Platform.isWindows || Platform.isLinux);
+
   bool get isLoadingCaptcha => _isLoadingCaptcha;
   String? get captchaImage => _captchaImage;
   String? get captchaTicket => _captchaTicket;
@@ -103,13 +110,15 @@ class CaptchaService {
       Map<String, dynamic> config = <String, dynamic>{};
 
       try {
-        config = await AuthService.instance.getBasicSiteConfig().timeout(
-          const Duration(seconds: 10),
-        );
+        config = await AuthService.instance
+            .getBasicSiteConfig()
+            .timeout(const Duration(seconds: 10));
       } catch (_) {}
 
       final captchaType = _normalizeCaptchaType(
-        (config['captcha_type'] ?? config['captchaType'] ?? config['captcha'])
+        (config['captcha_type'] ??
+                config['captchaType'] ??
+                config['captcha'])
             ?.toString(),
       );
 
@@ -151,8 +160,7 @@ class CaptchaService {
         'capAssetServer',
       ]);
 
-      final isExternalCaptcha =
-          captchaType == 'turnstile' ||
+      final isExternalCaptcha = captchaType == 'turnstile' ||
           captchaType == 'recaptcha' ||
           captchaType == 'cap';
 
@@ -199,7 +207,7 @@ class CaptchaService {
   }
 
   /// 跳转到 Web 验证码页面
-  Future<void> openCaptchaChallenge(BuildContext context) async {
+  Future<void> openCaptchaChallenge(BuildContext context, {VoidCallback? onVerified}) async {
     final server = ServerService.instance.currentServer;
     final config = captchaWebConfig;
 
@@ -210,14 +218,18 @@ class CaptchaService {
 
     final token = await Navigator.of(context).push<String>(
       MaterialPageRoute(
-        builder: (_) =>
-            CaptchaChallengePage(config: config, baseUrl: server.baseUrl),
+        builder: (_) => CaptchaChallengePage(
+          config: config,
+          baseUrl: server.baseUrl,
+          proxyConfig: _isDesktop ? _proxyConfig : null,
+        ),
       ),
     );
 
     if (token != null && token.isNotEmpty) {
       _captchaToken = token;
       ToastHelper.success('人机验证完成');
+      onVerified?.call();
     }
   }
 
@@ -241,16 +253,21 @@ class CaptchaService {
   Map<String, String> getCaptchaParams() {
     if (isWebCaptcha) {
       if (_captchaToken == null || _captchaToken!.isEmpty) return {};
-      return {'captcha': _captchaToken!, 'ticket': _captchaToken!};
+      return {
+        'captcha': _captchaToken!,
+        'ticket': _captchaToken!,
+      };
     }
 
     final userInput = captchaController.text.trim();
-    if (userInput.isEmpty &&
-        (_captchaTicket == null || _captchaTicket!.isEmpty)) {
+    if (userInput.isEmpty && (_captchaTicket == null || _captchaTicket!.isEmpty)) {
       return {};
     }
 
-    return {'captcha': userInput, 'ticket': _captchaTicket ?? ''};
+    return {
+      'captcha': userInput,
+      'ticket': _captchaTicket ?? '',
+    };
   }
 
   /// Web 验证码是否已通过
@@ -263,30 +280,44 @@ class CaptchaService {
       final config = captchaWebConfig;
       final displayName = config?.displayName ?? '人机验证';
 
-      return Column(
-        crossAxisAlignment: CrossAxisAlignment.stretch,
-        children: [
-          OutlinedButton.icon(
-            onPressed: _isLoadingCaptcha
-                ? null
-                : () => openCaptchaChallenge(context),
-            icon: Icon(
-              _captchaToken == null
-                  ? Icons.verified_user_outlined
-                  : Icons.verified,
-            ),
-            label: Text(
-              _captchaToken == null
-                  ? '点击完成 $displayName'
-                  : '$displayName 已完成，点击重新验证',
-            ),
-          ),
-          const SizedBox(height: 8),
-          Text(
-            '当前验证码类型：$displayName',
-            style: TextStyle(fontSize: 12, color: Theme.of(context).hintColor),
-          ),
-        ],
+      return StatefulBuilder(
+        builder: (context, setState) {
+          final hasProxy = _proxyConfig != null;
+          return Column(
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              OutlinedButton.icon(
+                onPressed: _isLoadingCaptcha ? null : () async {
+                  await openCaptchaChallenge(context);
+                  setState(() {});
+                },
+                onLongPress: _isDesktop && Platform.isWindows
+                    ? () => _showProxyDialog(context, setState)
+                    : null,
+                icon: Icon(
+                  _captchaToken == null
+                      ? Icons.verified_user_outlined
+                      : Icons.verified,
+                ),
+                label: Text(
+                  _captchaToken == null
+                      ? '点击完成 $displayName'
+                      : '$displayName 已完成，点击重新验证',
+                ),
+              ),
+              const SizedBox(height: 8),
+              Text(
+                _isDesktop && Platform.isWindows
+                    ? '当前验证码类型：$displayName${hasProxy ? '  (代理: $_proxyConfig)' : ''}\n网络问题验证失败可长按上方按钮可以设置代理(仅windows)'
+                    : '当前验证码类型：$displayName',
+                style: TextStyle(
+                  fontSize: 12,
+                  color: Theme.of(context).hintColor,
+                ),
+              ),
+            ],
+          );
+        },
       );
     }
 
@@ -392,4 +423,80 @@ class CaptchaService {
     }
     return null;
   }
+
+  /// Windows 桌面端长按弹出代理设置对话框
+  void _showProxyDialog(BuildContext context, StateSetter setState) {
+    final hostCtrl = TextEditingController(text: _proxyConfig?.host ?? '');
+    final portCtrl = TextEditingController(text: _proxyConfig?.port.toString() ?? '');
+
+    showDialog(
+      context: context,
+      builder: (ctx) {
+        return AlertDialog(
+          title: const Text('WebView 代理设置'),
+          content: SizedBox(
+            width: 320,
+            child: Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                Text(
+                  '仅支持无认证代理（HTTP/SOCKS5）',
+                  style: TextStyle(fontSize: 12, color: Theme.of(ctx).hintColor),
+                ),
+                const SizedBox(height: 16),
+                TextFormField(
+                  controller: hostCtrl,
+                  decoration: const InputDecoration(
+                    labelText: '代理地址',
+                    hintText: '127.0.0.1',
+                    prefixIcon: Icon(Icons.dns_outlined),
+                  ),
+                ),
+                const SizedBox(height: 12),
+                TextFormField(
+                  controller: portCtrl,
+                  keyboardType: TextInputType.number,
+                  decoration: const InputDecoration(
+                    labelText: '端口',
+                    hintText: '7890',
+                    prefixIcon: Icon(Icons.numbers),
+                  ),
+                ),
+              ],
+            ),
+          ),
+          actions: [
+            TextButton(
+              onPressed: () {
+                _proxyConfig = null;
+                setState(() {});
+                Navigator.of(ctx).pop();
+                ToastHelper.success('已清除代理配置');
+              },
+              child: const Text('清除'),
+            ),
+            TextButton(
+              onPressed: () => Navigator.of(ctx).pop(),
+              child: const Text('取消'),
+            ),
+            FilledButton(
+              onPressed: () {
+                final host = hostCtrl.text.trim();
+                final port = int.tryParse(portCtrl.text.trim()) ?? 0;
+                if (host.isEmpty || port <= 0) {
+                  ToastHelper.failure('请输入有效的代理地址和端口');
+                  return;
+                }
+                _proxyConfig = CaptchaProxyConfig(host: host, port: port);
+                setState(() {});
+                Navigator.of(ctx).pop();
+                ToastHelper.success('代理已设置: $host:$port');
+              },
+              child: const Text('确定'),
+            ),
+          ],
+        );
+      },
+    );
+  }
 }

lib/services/desktop_service.dart

@@ -8,6 +8,8 @@ import 'package:tray_manager/tray_manager.dart';
 import '../config/app_config.dart';
 import '../core/utils/app_logger.dart';
 import '../presentation/providers/theme_provider.dart';
+import 'sync_service.dart';
+import '../src/rust/api/ffi.dart' as ffi;
 
 /// 桌面端服务（窗口管理 + 系统托盘）
 class DesktopService with TrayListener, WindowListener {
@@ -188,6 +190,22 @@ class DesktopService with TrayListener, WindowListener {
     try {
       AppLogger.d('DesktopService: Cleaning up before exit...');
 
+      // 同步引擎清理（WCF 模式下必须调用，同步释放占位符、注销 sync root）
+      try {
+        await SyncService.instance.stop();
+        AppLogger.d('DesktopService: Sync engine stopped');
+      } catch (e) {
+        AppLogger.e('DesktopService: Error stopping sync: $e');
+      }
+
+      // 进程退出前同步清理（确保 WCF 资源释放，不依赖 tokio runtime）
+      try {
+        await ffi.syncShutdown();
+        AppLogger.d('DesktopService: Sync shutdown complete');
+      } catch (e) {
+        AppLogger.e('DesktopService: Error in sync shutdown: $e');
+      }
+
       // 彻底解绑
       windowManager.removeListener(this);
       trayManager.removeListener(this);

lib/services/dialog_queue_service.dart

@@ -0,0 +1,32 @@
+import 'dart:async';
+
+/// 全局弹窗队列。
+///
+/// 用于登录后自动弹出的公告、更新、剪贴板分享链接等场景，保证同一时间
+/// 只有一个弹窗/引导流程在前台显示。前一个流程结束后，后一个流程才会执行。
+class DialogQueueService {
+  DialogQueueService._();
+
+  static final DialogQueueService instance = DialogQueueService._();
+
+  Future<void> _tail = Future<void>.value();
+
+  Future<T?> enqueue<T>(Future<T?> Function() task) {
+    final completer = Completer<T?>();
+
+    _tail = _tail.catchError((_) {}).then((_) async {
+      try {
+        final result = await task();
+        if (!completer.isCompleted) {
+          completer.complete(result);
+        }
+      } catch (error, stackTrace) {
+        if (!completer.isCompleted) {
+          completer.completeError(error, stackTrace);
+        }
+      }
+    });
+
+    return completer.future;
+  }
+}

lib/services/download_service.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 import 'dart:io';
 import 'package:background_downloader/background_downloader.dart' as bd;
 import 'package:flutter/foundation.dart';
+import 'package:external_path/external_path.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:permission_handler/permission_handler.dart';
 import '../core/constants/storage_keys.dart';
@@ -27,7 +28,7 @@ class DownloadService {
 
   // 回调处理器
   static Function(String taskId, DownloadStatus status, int progress)?
-      _callbackHandler;
+  _callbackHandler;
 
   final FileService _fileService = FileService();
   final Map<String, StreamController<DownloadTaskModel>> _progressControllers =
@@ -36,7 +37,8 @@ class DownloadService {
 
   /// 设置回调处理器
   static void setCallbackHandler(
-      Function(String taskId, DownloadStatus status, int progress) handler) {
+    Function(String taskId, DownloadStatus status, int progress) handler,
+  ) {
     _callbackHandler = handler;
   }
 
@@ -65,7 +67,10 @@ class DownloadService {
         throw Exception('存储权限被拒绝');
       }
 
-      final directory = Directory('/storage/emulated/0/Download');
+      final downloadPath = await ExternalPath.getExternalStoragePublicDirectory(
+        ExternalPath.DIRECTORY_DOWNLOAD,
+      );
+      final directory = Directory(downloadPath);
       if (!await directory.exists()) {
         await directory.create(recursive: true);
       }
@@ -103,22 +108,23 @@ class DownloadService {
 
   /// 读取 WiFi-only 下载设置
   Future<bool> isWifiOnlyEnabled() async {
-    return await StorageService.instance
-            .getBool(StorageKeys.downloadWifiOnly) ??
+    return await StorageService.instance.getBool(
+          StorageKeys.downloadWifiOnly,
+        ) ??
         false;
   }
 
   /// 读取重试次数设置
   Future<int> getRetries() async {
-    return await StorageService.instance
-            .getInt(StorageKeys.downloadRetries) ??
+    return await StorageService.instance.getInt(StorageKeys.downloadRetries) ??
         3;
   }
 
   /// 初始化下载器
-  Future<void> initialize(
-      {Function(String taskId, DownloadStatus status, int progress)?
-          callbackHandler}) async {
+  Future<void> initialize({
+    Function(String taskId, DownloadStatus status, int progress)?
+    callbackHandler,
+  }) async {
     if (callbackHandler != null) {
       setCallbackHandler(callbackHandler);
       AppLogger.d('回调处理器已更新');
@@ -133,9 +139,10 @@ class DownloadService {
     if (Platform.isAndroid) {
       bd.FileDownloader().configureNotification(
         running: const bd.TaskNotification(
-            '正在下载', '文件: {filename} - {progress}'),
-        complete:
-            const bd.TaskNotification('下载完成', '文件: {filename} 已保存'),
+          '正在下载',
+          '文件: {filename} - {progress}',
+        ),
+        complete: const bd.TaskNotification('下载完成', '文件: {filename} 已保存'),
         error: const bd.TaskNotification('下载失败', '文件: {filename} 下载出错'),
         paused: const bd.TaskNotification('已暂停', '文件: {filename} 已暂停'),
         progressBar: true,
@@ -170,14 +177,15 @@ class DownloadService {
       _internalIdToExternalTaskId[metaInternalId] = update.task.taskId;
       _bdTasks[metaInternalId] = update.task as bd.DownloadTask;
       AppLogger.d(
-          '从 metaData 恢复映射: bdTaskId=${update.task.taskId}, internalId=$metaInternalId');
+        '从 metaData 恢复映射: bdTaskId=${update.task.taskId}, internalId=$metaInternalId',
+      );
     }
 
-    final resolvedInternalId =
-        _externalTaskIdToInternalId[update.task.taskId];
+    final resolvedInternalId = _externalTaskIdToInternalId[update.task.taskId];
     if (resolvedInternalId == null) {
       AppLogger.d(
-          'background_downloader 状态回调: 未找到内部任务ID, taskId=${update.task.taskId}');
+        'background_downloader 状态回调: 未找到内部任务ID, taskId=${update.task.taskId}',
+      );
       return;
     }
 
@@ -201,7 +209,8 @@ class DownloadService {
     }
 
     AppLogger.d(
-        'background_downloader 状态更新: taskId=${update.task.taskId}, internalId=$resolvedInternalId, status=$status');
+      'background_downloader 状态更新: taskId=${update.task.taskId}, internalId=$resolvedInternalId, status=$status',
+    );
 
     final progress = status == DownloadStatus.completed ? 100 : 0;
     _callbackHandler?.call(resolvedInternalId, status, progress);
@@ -261,7 +270,10 @@ class DownloadService {
 
   /// 使用 background_downloader 开始下载
   Future<String?> _startBdDownload(
-      DownloadTaskModel task, String url, Directory dir) async {
+    DownloadTaskModel task,
+    String url,
+    Directory dir,
+  ) async {
     final wifiOnly = await isWifiOnlyEnabled();
     final retries = await getRetries();
     final bdTask = bd.DownloadTask(
@@ -291,14 +303,14 @@ class DownloadService {
     task.backgroundTaskId = bdTask.taskId;
 
     AppLogger.d(
-        'background_downloader 任务已添加: taskId=${bdTask.taskId}, internalId=${task.id}, requiresWiFi=$wifiOnly, retries=$retries');
+      'background_downloader 任务已添加: taskId=${bdTask.taskId}, internalId=${task.id}, requiresWiFi=$wifiOnly, retries=$retries',
+    );
 
     return bdTask.taskId;
   }
 
   /// 恢复下载（用于重启后恢复暂停的任务）
-  Future<String?> resumeDownloadAfterRestart(
-      DownloadTaskModel task) async {
+  Future<String?> resumeDownloadAfterRestart(DownloadTaskModel task) async {
     try {
       if (!_isInitialized) {
         await initialize();
@@ -349,11 +361,11 @@ class DownloadService {
       task.backgroundTaskId = bdTask.taskId;
 
       // 如果有已下载的部分，尝试 resume；否则 enqueue
-      final partialFile =
-          File('${dir.path}/${task.fileName}.part');
+      final partialFile = File('${dir.path}/${task.fileName}.part');
       if (task.downloadedBytes > 0 && await partialFile.exists()) {
         AppLogger.d(
-            '断点续传: ${task.fileName}, 已下载 ${task.downloadedBytes} bytes');
+          '断点续传: ${task.fileName}, 已下载 ${task.downloadedBytes} bytes',
+        );
         await bd.FileDownloader().resume(bdTask);
       } else {
         AppLogger.d('重新下载: ${task.fileName}');

lib/services/file_app_service.dart

@@ -0,0 +1,338 @@
+import 'package:dio/dio.dart';
+
+import 'api_service.dart';
+import '../core/utils/file_type_utils.dart';
+import '../core/utils/file_utils.dart';
+import '../data/models/file_model.dart';
+
+class FileAppViewer {
+  final String id;
+  final String type;
+  final String displayName;
+  final List<String> exts;
+  final String? icon;
+  final int maxSize;
+  final String? url;
+
+  const FileAppViewer({
+    required this.id,
+    required this.type,
+    required this.displayName,
+    required this.exts,
+    this.icon,
+    this.maxSize = 0,
+    this.url,
+  });
+
+  factory FileAppViewer.fromJson(Map<String, dynamic> json) {
+    return FileAppViewer(
+      id: json['id']?.toString() ?? '',
+      type: json['type']?.toString() ?? '',
+      displayName: json['display_name']?.toString() ??
+          json['displayName']?.toString() ??
+          json['name']?.toString() ??
+          '文件应用',
+      exts: _parseExts(json['exts'] ?? json['extensions'] ?? json['ext']),
+      icon: json['icon']?.toString(),
+      maxSize: (json['max_size'] as num?)?.toInt() ??
+          (json['maxSize'] as num?)?.toInt() ??
+          0,
+      url: json['url']?.toString(),
+    );
+  }
+
+  static List<String> _parseExts(dynamic raw) {
+    if (raw is List) {
+      return raw
+          .map((e) => e.toString().toLowerCase().replaceAll('.', '').trim())
+          .where((e) => e.isNotEmpty)
+          .toList();
+    }
+
+    if (raw is String) {
+      return raw
+          .split(',')
+          .map((e) => e.toLowerCase().replaceAll('.', '').trim())
+          .where((e) => e.isNotEmpty)
+          .toList();
+    }
+
+    return const [];
+  }
+
+  bool supports(FileModel file) {
+    final ext = FileTypeUtils.getExtension(file.name).toLowerCase();
+    if (ext.isEmpty || !exts.contains(ext)) return false;
+    if (maxSize > 0 && file.size > maxSize) return false;
+    return id.isNotEmpty;
+  }
+
+  bool get isWopi => type.toLowerCase().contains('wopi');
+}
+
+class FileAppSession {
+  final FileAppViewer viewer;
+  final String wopiSrc;
+  final String? accessToken;
+  final int? expires;
+
+  const FileAppSession({
+    required this.viewer,
+    required this.wopiSrc,
+    this.accessToken,
+    this.expires,
+  });
+
+  bool get hasAccessToken => accessToken != null && accessToken!.isNotEmpty;
+}
+
+/// Cloudreve V4 文件应用服务。
+///
+/// 注意：部分 Cloudreve V4 站点没有 `/site/config`，只有 `/site/config/basic`。
+/// 所以这里优先请求 `/site/config/basic`，如果没有 file_viewers 再尝试
+/// `/site/config`，并且对 404 做静默降级，避免 WebView 打开器直接崩溃。
+class FileAppService {
+  FileAppService._();
+
+  static final FileAppService instance = FileAppService._();
+
+  List<FileAppViewer>? _cachedViewers;
+  DateTime? _cachedAt;
+
+  Future<List<FileAppViewer>> getViewers({bool forceRefresh = false}) async {
+    final cached = _cachedViewers;
+    final cachedAt = _cachedAt;
+    if (!forceRefresh &&
+        cached != null &&
+        cachedAt != null &&
+        DateTime.now().difference(cachedAt).inMinutes < 10) {
+      return cached;
+    }
+
+    final viewers = await _loadViewersFromSiteConfig();
+
+    _cachedViewers = viewers;
+    _cachedAt = DateTime.now();
+
+    return viewers;
+  }
+
+  Future<List<FileAppViewer>> _loadViewersFromSiteConfig() async {
+    // 当前项目登录验证码就是从 /site/config/basic 取的；
+    // /site/config 在部分 Cloudreve 部署中不存在，会返回 404。
+    const endpoints = <String>[
+      '/site/config/basic',
+      '/site/config',
+    ];
+
+    for (final endpoint in endpoints) {
+      final root = await _tryGetSiteConfig(endpoint);
+      if (root == null) continue;
+
+      final viewers = _extractViewers(root);
+      if (viewers.isNotEmpty) {
+        return viewers;
+      }
+    }
+
+    return const [];
+  }
+
+  Future<Map<String, dynamic>?> _tryGetSiteConfig(String endpoint) async {
+    try {
+      final response = await ApiService.instance.dio.get<dynamic>(
+        endpoint,
+        options: Options(
+          extra: {'noAuth': true},
+          // 404 也作为普通响应返回，由这里自己处理，避免进入全局错误拦截器。
+          validateStatus: (status) => status != null && status >= 200 && status < 500,
+        ),
+      );
+
+      if (response.statusCode == 404) {
+        return null;
+      }
+
+      final raw = response.data;
+      final map = _asMap(raw);
+      if (map == null) return null;
+
+      final code = map['code'];
+      if (code is int && code != 0 && code != 203) {
+        return null;
+      }
+
+      return _asMap(map['data']) ?? map;
+    } catch (_) {
+      return null;
+    }
+  }
+
+  Future<FileAppViewer?> findViewerForFile(
+    FileModel file, {
+    bool forceRefresh = false,
+  }) async {
+    final viewers = await getViewers(forceRefresh: forceRefresh);
+    final ext = FileTypeUtils.getExtension(file.name).toLowerCase();
+
+    final candidates = viewers.where((viewer) => viewer.supports(file)).toList();
+    if (candidates.isEmpty) return null;
+
+    candidates.sort((a, b) {
+      final aw = a.isWopi ? 0 : 1;
+      final bw = b.isWopi ? 0 : 1;
+      if (aw != bw) return aw.compareTo(bw);
+
+      final aExact = a.exts.contains(ext) ? 0 : 1;
+      final bExact = b.exts.contains(ext) ? 0 : 1;
+      return aExact.compareTo(bExact);
+    });
+
+    return candidates.first;
+  }
+
+  Future<FileAppSession> createViewerSession({
+    required FileModel file,
+    required FileAppViewer viewer,
+    String preferredAction = 'view',
+  }) async {
+    final uri = FileUtils.toCloudreveUri(file.relativePath);
+    final data = <String, dynamic>{
+      'uri': uri,
+      'viewer_id': viewer.id,
+      'preferred_action': preferredAction,
+      'parent_uri': _parentUri(uri),
+    };
+
+    final response = await ApiService.instance.put<Map<String, dynamic>>(
+      '/file/viewerSession',
+      data: data,
+    );
+
+    final root = _asMap(response['data']) ?? response;
+    final session = _asMap(root['session']);
+    final wopiSrc = root['wopi_src']?.toString() ??
+        root['wopiSrc']?.toString() ??
+        root['url']?.toString() ??
+        '';
+
+    if (wopiSrc.isEmpty) {
+      throw Exception('文件应用没有返回可打开的 URL');
+    }
+
+    return FileAppSession(
+      viewer: viewer,
+      wopiSrc: _absoluteUrl(wopiSrc),
+      accessToken: session?['access_token']?.toString() ??
+          session?['accessToken']?.toString(),
+      expires: (session?['expires'] as num?)?.toInt(),
+    );
+  }
+
+  Future<FileAppSession> openFile({
+    required FileModel file,
+    String preferredAction = 'view',
+  }) async {
+    final viewer = await findViewerForFile(file);
+    if (viewer == null) {
+      throw Exception('没有找到支持 ${FileTypeUtils.getExtension(file.name)} 的 Cloudreve 文件应用');
+    }
+
+    try {
+      return await createViewerSession(
+        file: file,
+        viewer: viewer,
+        preferredAction: preferredAction,
+      );
+    } catch (_) {
+      if (preferredAction != 'view') {
+        return createViewerSession(
+          file: file,
+          viewer: viewer,
+          preferredAction: 'view',
+        );
+      }
+      rethrow;
+    }
+  }
+
+  List<FileAppViewer> _extractViewers(Map<String, dynamic> root) {
+    final raw = _findValueByKey(root, const [
+      'file_viewers',
+      'fileViewers',
+      'file_viewer',
+      'viewers',
+    ]);
+
+    dynamic viewerList = raw;
+
+    final rawMap = _asMap(raw);
+    if (rawMap != null) {
+      viewerList = rawMap['viewers'] ?? rawMap['items'] ?? rawMap['data'];
+    }
+
+    if (viewerList is! List) return const [];
+
+    return viewerList
+        .whereType<Map>()
+        .map((item) => FileAppViewer.fromJson(Map<String, dynamic>.from(item)))
+        .where((viewer) => viewer.id.isNotEmpty && viewer.exts.isNotEmpty)
+        .toList();
+  }
+
+  dynamic _findValueByKey(dynamic value, List<String> keys) {
+    if (value is Map) {
+      for (final key in keys) {
+        if (value.containsKey(key)) {
+          return value[key];
+        }
+      }
+
+      for (final child in value.values) {
+        final found = _findValueByKey(child, keys);
+        if (found != null) return found;
+      }
+    } else if (value is List) {
+      for (final child in value) {
+        final found = _findValueByKey(child, keys);
+        if (found != null) return found;
+      }
+    }
+
+    return null;
+  }
+
+  Map<String, dynamic>? _asMap(dynamic value) {
+    if (value is Map<String, dynamic>) return value;
+    if (value is Map) return Map<String, dynamic>.from(value);
+    return null;
+  }
+
+  String _parentUri(String uri) {
+    final normalized = uri.endsWith('/') ? uri.substring(0, uri.length - 1) : uri;
+    final index = normalized.lastIndexOf('/');
+    if (index <= 'cloudreve://my'.length) {
+      return 'cloudreve://my';
+    }
+    return normalized.substring(0, index);
+  }
+
+  String _absoluteUrl(String url) {
+    if (url.startsWith('http://') || url.startsWith('https://')) {
+      return url;
+    }
+
+    final base = Uri.parse(ApiService.instance.dio.options.baseUrl);
+    final origin = Uri(
+      scheme: base.scheme,
+      host: base.host,
+      port: base.hasPort ? base.port : null,
+    ).toString();
+
+    if (url.startsWith('/')) {
+      return '$origin$url';
+    }
+
+    return '$origin/$url';
+  }
+}

lib/services/share_link_service.dart

@@ -0,0 +1,906 @@
+import 'package:dio/dio.dart';
+
+import 'api_service.dart';
+import '../core/utils/file_utils.dart';
+
+class ShareLinkCandidate {
+  final String id;
+  final String url;
+  final String? password;
+
+  const ShareLinkCandidate({
+    required this.id,
+    required this.url,
+    this.password,
+  });
+}
+
+class ShareLinkInfo {
+  final String id;
+  final String name;
+  final int visited;
+  final bool expired;
+  final bool unlocked;
+  final bool isPrivate;
+  final int sourceType;
+  final String? sourceUri;
+  final int size;
+  final String? url;
+  final String? ownerName;
+  final String? ownerId;
+  final String? ownerAvatar;
+  final String? contextHint;
+  final DateTime? createdAt;
+  final DateTime? expires;
+
+  const ShareLinkInfo({
+    required this.id,
+    required this.name,
+    required this.visited,
+    required this.expired,
+    required this.unlocked,
+    required this.isPrivate,
+    required this.sourceType,
+    this.sourceUri,
+    this.size = 0,
+    this.url,
+    this.ownerName,
+    this.ownerId,
+    this.ownerAvatar,
+    this.contextHint,
+    this.createdAt,
+    this.expires,
+  });
+
+  bool get isFolder => sourceType == 1;
+  bool get isFile => !isFolder;
+
+  factory ShareLinkInfo.fromJson(Map<String, dynamic> json) {
+    final owner = _asMap(json['owner']);
+    final source = _asMap(json['source']);
+    final file = _asMap(json['file']);
+    final object = _asMap(json['object']);
+    final entity = _asMap(json['entity']);
+    final rawSource = json['source'];
+
+    final ownerId = (owner?['id'] ??
+            json['owner_id'] ??
+            json['ownerId'] ??
+            source?['owner_id'] ??
+            file?['owner_id'])
+        ?.toString();
+
+    final name = (json['name'] ??
+            file?['name'] ??
+            source?['name'] ??
+            object?['name'] ??
+            '分享文件')
+        .toString();
+
+    final parsedSourceUri = (json['source_uri'] ??
+            json['sourceUri'] ??
+            json['uri'] ??
+            json['path'] ??
+            (rawSource is String ? rawSource : null) ??
+            source?['uri'] ??
+            source?['source_uri'] ??
+            source?['path'] ??
+            source?['url'] ??
+            file?['uri'] ??
+            file?['source_uri'] ??
+            file?['path'] ??
+            object?['uri'] ??
+            object?['source_uri'] ??
+            object?['path'] ??
+            entity?['uri'] ??
+            entity?['source_uri'] ??
+            entity?['path'])
+        ?.toString();
+
+    final resolvedSourceUri = _looksLikeCloudreveUri(parsedSourceUri)
+        ? parsedSourceUri
+        : _fallbackSourceUri(ownerId: ownerId, name: name);
+
+    final size = _asInt(json['size'] ??
+        json['source_size'] ??
+        json['sourceSize'] ??
+        source?['size'] ??
+        file?['size'] ??
+        object?['size'] ??
+        entity?['size']);
+
+    return ShareLinkInfo(
+      id: json['id']?.toString() ?? '',
+      name: name,
+      size: size,
+      visited: _asInt(json['visited']),
+      expired: json['expired'] as bool? ?? false,
+      unlocked: json['unlocked'] as bool? ?? false,
+      isPrivate: json['is_private'] as bool? ?? false,
+      sourceType: _asInt(json['source_type'] ??
+          source?['type'] ??
+          file?['type'] ??
+          object?['type']),
+      sourceUri: resolvedSourceUri,
+      url: json['url']?.toString(),
+      ownerName: owner?['nickname']?.toString() ??
+          owner?['name']?.toString() ??
+          json['owner_name']?.toString(),
+      ownerId: ownerId,
+      ownerAvatar: owner?['avatar']?.toString(),
+      contextHint: json['context_hint']?.toString() ??
+          json['contextHint']?.toString() ??
+          json['context']?.toString(),
+      createdAt: _parseDate(json['created_at']),
+      expires: _parseDate(json['expires']),
+    );
+  }
+
+  static bool _looksLikeCloudreveUri(String? value) {
+    if (value == null || value.trim().isEmpty) return false;
+    return value.trim().startsWith('cloudreve://');
+  }
+
+  static String? _fallbackSourceUri({
+    required String? ownerId,
+    required String name,
+  }) {
+    // 不再用 owner@my 兜底。公开分享上下文不是当前账号的 my 文件系统，
+    // 用 owner@my 会导致 /file/url 返回 40081 或空 urls。
+    // 真正的兜底由 ShareLinkService.getShareInfo 根据分享 ID 构造
+    // cloudreve://<shareId>@share/ 完成。
+    return null;
+  }
+
+  static Map<String, dynamic>? _asMap(dynamic value) {
+    if (value is Map<String, dynamic>) return value;
+    if (value is Map) return Map<String, dynamic>.from(value);
+    return null;
+  }
+
+  static int _asInt(dynamic value) {
+    if (value is int) return value;
+    if (value is num) return value.toInt();
+    if (value is String) return int.tryParse(value) ?? 0;
+    return 0;
+  }
+
+  static DateTime? _parseDate(dynamic value) {
+    final text = value?.toString();
+    if (text == null || text.isEmpty) return null;
+    return DateTime.tryParse(text);
+  }
+}
+
+class ShareLinkFile {
+  final int type;
+  final String id;
+  final String name;
+  final int size;
+  final String path;
+  final DateTime? createdAt;
+  final DateTime? updatedAt;
+  final String? primaryEntity;
+  final String? capability;
+  final String? contextHint;
+  final Map<String, dynamic>? metadata;
+
+  const ShareLinkFile({
+    required this.type,
+    required this.id,
+    required this.name,
+    required this.size,
+    required this.path,
+    this.createdAt,
+    this.updatedAt,
+    this.primaryEntity,
+    this.capability,
+    this.contextHint,
+    this.metadata,
+  });
+
+  bool get isFolder => type == 1;
+  bool get isFile => !isFolder;
+
+  factory ShareLinkFile.fromJson(Map<String, dynamic> json) {
+    return ShareLinkFile(
+      type: _asInt(json['type']),
+      id: json['id']?.toString() ?? '',
+      name: json['name']?.toString() ?? '未命名文件',
+      size: _asInt(json['size']),
+      path: json['path']?.toString() ?? '',
+      createdAt: _parseDate(json['created_at']),
+      updatedAt: _parseDate(json['updated_at']),
+      primaryEntity: json['primary_entity']?.toString() ??
+          json['entity']?.toString(),
+      capability: json['capability']?.toString(),
+      contextHint: json['context_hint']?.toString(),
+      metadata: _asMap(json['metadata']),
+    );
+  }
+
+  static int _asInt(dynamic value) {
+    if (value is int) return value;
+    if (value is num) return value.toInt();
+    if (value is String) return int.tryParse(value) ?? 0;
+    return 0;
+  }
+
+  static DateTime? _parseDate(dynamic value) {
+    final text = value?.toString();
+    if (text == null || text.isEmpty) return null;
+    return DateTime.tryParse(text);
+  }
+
+  static Map<String, dynamic>? _asMap(dynamic value) {
+    if (value is Map<String, dynamic>) return value;
+    if (value is Map) return Map<String, dynamic>.from(value);
+    return null;
+  }
+}
+
+class ShareLinkFileListResult {
+  final List<ShareLinkFile> files;
+  final ShareLinkFile? parent;
+  final String? contextHint;
+  final bool hasMore;
+  final String? nextPageToken;
+
+  const ShareLinkFileListResult({
+    required this.files,
+    this.parent,
+    this.contextHint,
+    this.hasMore = false,
+    this.nextPageToken,
+  });
+
+  factory ShareLinkFileListResult.fromJson(Map<String, dynamic> json) {
+    final rawFiles = json['files'];
+    final rawParent = json['parent'];
+    final pagination = ShareLinkService._asMap(json['pagination']);
+
+    return ShareLinkFileListResult(
+      files: rawFiles is List
+          ? rawFiles
+              .whereType<Map>()
+              .map((item) => ShareLinkFile.fromJson(Map<String, dynamic>.from(item)))
+              .toList()
+          : const [],
+      parent: rawParent is Map
+          ? ShareLinkFile.fromJson(Map<String, dynamic>.from(rawParent))
+          : null,
+      contextHint: json['context_hint']?.toString(),
+      hasMore: pagination?['next_token'] != null,
+      nextPageToken: pagination?['next_token']?.toString(),
+    );
+  }
+}
+
+class ShareDownloadUrlResult {
+  final String url;
+  final DateTime? expires;
+
+  const ShareDownloadUrlResult({
+    required this.url,
+    this.expires,
+  });
+}
+
+class ShareLinkService {
+  ShareLinkService._();
+
+  static final ShareLinkService instance = ShareLinkService._();
+
+  /// 兼容当前站点固定域名，也兼容用户自定义 Cloudreve 域名的 /s/{id}/{password?} 分享链接。
+  static final RegExp _shareLinkRegExp = RegExp(
+    r'https?://[^\s]+?/s/([A-Za-z0-9_-]+)(?:/([A-Za-z0-9_-]+))?',
+    caseSensitive: false,
+  );
+
+  ShareLinkCandidate? parseShareLink(String? text) {
+    if (text == null || text.trim().isEmpty) return null;
+
+    final match = _shareLinkRegExp.firstMatch(text.trim());
+    if (match == null) return null;
+
+    final id = match.group(1);
+    if (id == null || id.isEmpty) return null;
+
+    final password = match.group(2);
+    final url = match.group(0)!;
+
+    return ShareLinkCandidate(
+      id: id,
+      url: url,
+      password: password == null || password.isEmpty ? null : password,
+    );
+  }
+
+  Future<ShareLinkInfo> getShareInfo(
+    ShareLinkCandidate candidate, {
+    String? password,
+  }) async {
+    final resolvedPassword = password ?? candidate.password;
+    final query = <String, dynamic>{
+      'count_views': true,
+      'owner_extended': true,
+      if (resolvedPassword != null && resolvedPassword.isNotEmpty)
+        'password': resolvedPassword,
+    };
+
+    final response = await ApiService.instance.dio.get<Map<String, dynamic>>(
+      '/share/info/${candidate.id}',
+      queryParameters: query,
+      options: Options(
+        extra: const {'noAuth': true},
+        headers: const {
+          'X-Cr-Context-Hint': 'share',
+        },
+      ),
+    );
+
+    final body = response.data ?? <String, dynamic>{};
+    final data = _asMap(body['data']) ?? body;
+    final headerContext = _headerValue(response.headers, 'X-Cr-Context-Hint');
+    final sourceType = ShareLinkInfo._asInt(data['source_type']);
+
+    // 公开分享页面访问文件时，必须使用 Cloudreve 官方 share 文件系统 URI，
+    // 即 cloudreve://{shareId}[:password]@share[/...]。
+    // /share/info 返回的 source_uri 往往是所有者 my 文件系统里的真实路径，
+    // 匿名/noAuth 场景拿它直接请求 /file/url 会被服务端按普通文件解析，
+    // 进而返回 40081 Entity not exist。
+    final accessUri = shareRootUri(
+      shareId: candidate.id,
+      password: resolvedPassword,
+      trailingSlash: sourceType != 0,
+    );
+
+    return ShareLinkInfo.fromJson(<String, dynamic>{
+      ...data,
+      'source_uri': accessUri,
+      if ((data['context_hint'] == null || data['context_hint'].toString().isEmpty) &&
+          headerContext != null &&
+          headerContext.isNotEmpty)
+        'context_hint': headerContext,
+    });
+  }
+
+  String? ownerAvatarUrl(ShareLinkInfo info) {
+    final ownerId = info.ownerId;
+    if (ownerId == null || ownerId.isEmpty) return null;
+
+    final avatar = info.ownerAvatar;
+    if (avatar != null && avatar.startsWith(RegExp(r'https?://'))) {
+      return avatar;
+    }
+
+    final base = ApiService.instance.dio.options.baseUrl.replaceFirst(RegExp(r'/+$'), '');
+    return '$base/user/avatar/${Uri.encodeComponent(ownerId)}';
+  }
+
+  /// 按分享的 source_uri 读取目录文件。
+  ///
+  /// Cloudreve V4 的 /file 接口支持 JWT Optional，并通过 X-Cr-Context-Hint
+  /// 绑定分享上下文。首次读取时用 `share`，服务端返回 context_hint 后，后续下载
+  /// 和进入子目录都继续携带该 context_hint。
+  Future<ShareLinkFileListResult> listSharedFiles({
+    required String uri,
+    String? contextHint,
+    int page = 0,
+    int pageSize = 100,
+    String? nextPageToken,
+  }) async {
+    final response = await ApiService.instance.dio.get<Map<String, dynamic>>(
+      '/file',
+      queryParameters: <String, dynamic>{
+        'uri': uri,
+        'page': page,
+        'page_size': pageSize,
+        if (nextPageToken != null && nextPageToken.isNotEmpty)
+          'next_page_token': nextPageToken,
+      },
+      options: Options(
+        extra: const {'noAuth': true},
+        headers: <String, dynamic>{
+          'X-Cr-Context-Hint': _firstContextHint(contextHint),
+        },
+      ),
+    );
+
+    final body = response.data ?? <String, dynamic>{};
+    final data = _asMap(body['data']) ?? body;
+    final headerContext = _headerValue(response.headers, 'X-Cr-Context-Hint');
+    return ShareLinkFileListResult.fromJson(<String, dynamic>{
+      ...data,
+      if ((data['context_hint'] == null || data['context_hint'].toString().isEmpty) &&
+          headerContext != null &&
+          headerContext.isNotEmpty)
+        'context_hint': headerContext,
+    });
+  }
+
+  /// 读取分享上下文中文件详情，主要用于拿到 primary_entity。
+  Future<ShareLinkFile> getSharedFileInfo({
+    required String uri,
+    String? contextHint,
+    String? shareId,
+    String? password,
+  }) async {
+    Object? lastError;
+
+    for (final hint in _contextHintCandidates(contextHint, shareId: shareId)) {
+      try {
+        final response = await ApiService.instance.dio.get<Map<String, dynamic>>(
+          '/file/info',
+          queryParameters: <String, dynamic>{
+            'uri': uri,
+            'extended': true,
+          },
+          options: Options(
+            extra: const {'noAuth': true},
+            headers: <String, dynamic>{
+              'X-Cr-Context-Hint': hint,
+            },
+          ),
+        );
+
+        final body = response.data ?? <String, dynamic>{};
+        final data = _asMap(body['data']) ?? body;
+        final headerContext = _headerValue(response.headers, 'X-Cr-Context-Hint');
+        return ShareLinkFile.fromJson(<String, dynamic>{
+          ...data,
+          'context_hint': data['context_hint'] ?? headerContext ?? hint,
+        });
+      } catch (e) {
+        lastError = e;
+      }
+    }
+
+    throw lastError ?? Exception('文件详情读取失败');
+  }
+
+  ShareLinkFile fileFromShareInfo(ShareLinkInfo info) {
+    final sourceUri = info.sourceUri ??
+        ShareLinkInfo._fallbackSourceUri(
+          ownerId: info.ownerId,
+          name: info.name,
+        ) ??
+        '';
+    return ShareLinkFile(
+      type: info.sourceType,
+      id: info.id,
+      name: info.name,
+      size: info.size,
+      path: sourceUri,
+      createdAt: info.createdAt,
+      updatedAt: info.createdAt,
+      contextHint: info.contextHint,
+    );
+  }
+
+  /// 获取分享上下文中的下载 URL。
+  ///
+  /// 按 Cloudreve V4 官方 `/file/url` 方式创建临时下载链接：
+  /// body 只提交 `uris`，文件夹批量下载时提交 `archive: true`；
+  /// 分享访问走 JWT Optional，因此这里使用 noAuth，避免当前登录用户的
+  /// Authorization 影响分享上下文。
+  Future<ShareDownloadUrlResult> createShareDownloadUrl({
+    required String uri,
+    String? contextHint,
+    String? shareId,
+    String? password,
+    String? entity,
+    String? fileName,
+    bool archive = false,
+  }) async {
+    Object? lastError;
+
+    // Cloudreve V4 官方接口：POST /file/url
+    // Header: X-Cr-Context-Hint
+    // Body: { "uris": [...], "archive": true? }
+    //
+    // 分享下载必须不带当前账号 token；否则服务端可能按当前账号解析 URI，
+    // 出现 Entity not exist (40081)。
+    for (final candidateUri in _uriCandidates(
+      uri,
+      shareId: shareId,
+      password: password,
+      fileName: fileName,
+    )) {
+      for (final hint in _contextHintCandidates(contextHint, shareId: shareId)) {
+        try {
+          return await _createShareDownloadUrlOnce(
+            uri: candidateUri,
+            contextHint: hint,
+            archive: archive,
+          );
+        } catch (e) {
+          lastError = e;
+        }
+      }
+    }
+
+    throw lastError ?? Exception('服务端没有返回可用的下载链接');
+  }
+
+  Future<ShareDownloadUrlResult> _createShareDownloadUrlOnce({
+    required String uri,
+    required String contextHint,
+    bool archive = false,
+  }) async {
+    final body = <String, dynamic>{
+      'uris': <String>[uri],
+      'download': true,
+      if (archive) 'archive': true,
+    };
+
+    final response = await ApiService.instance.dio.post<Map<String, dynamic>>(
+      '/file/url',
+      data: body,
+      options: Options(
+        extra: const {'noAuth': true},
+        headers: <String, dynamic>{
+          'Content-Type': 'application/json',
+          'X-Cr-Context-Hint': contextHint,
+        },
+      ),
+    );
+
+    final raw = response.data ?? <String, dynamic>{};
+    final data = _asMap(raw['data']) ?? raw;
+    final url = _extractDownloadUrl(data) ?? _extractDownloadUrl(raw);
+    if (url != null && url.isNotEmpty) {
+      return ShareDownloadUrlResult(
+        url: url,
+        expires: ShareLinkInfo._parseDate(data['expires'] ?? raw['expires']),
+      );
+    }
+
+    throw Exception('服务端没有返回可用的下载链接');
+  }
+
+  /// 将分享文件转存到当前用户网盘。
+  ///
+  /// Cloudreve V4 使用 /file/move，同一接口可移动/复制文件；传入 copy=true
+  /// 时即为转存/复制到目标目录。
+  Future<void> saveSharedFiles({
+    required List<String> uris,
+    required String destination,
+    String? contextHint,
+    String? shareId,
+    String? password,
+    String? fileName,
+  }) async {
+    final dst = FileUtils.toCloudreveUri(destination);
+    Object? lastError;
+
+    final uriCandidateSets = uris
+        .map((uri) => _uriCandidates(
+              uri,
+              shareId: shareId,
+              password: password,
+              // 单文件分享的 source_uri 是 cloudreve://{id}@share 根。
+              // /file/move 不允许复制 share 根目录，因此需要优先尝试
+              // cloudreve://{id}@share/{fileName}，并过滤掉根 URI。
+              fileName: uris.length == 1 ? fileName : null,
+              includeRootFallback: false,
+            )
+                .where((candidate) => !isShareRootUri(candidate, shareId: shareId))
+                .toList())
+        .where((candidates) => candidates.isNotEmpty)
+        .toList();
+
+    if (uriCandidateSets.isEmpty) {
+      throw Exception('不能直接转存分享根目录，请选择具体文件或进入目录后再转存');
+    }
+
+    for (final hint in _contextHintCandidates(contextHint, shareId: shareId)) {
+      for (final candidateUris in _cartesianUriCandidates(uriCandidateSets)) {
+        if (candidateUris.isEmpty) continue;
+        try {
+          await ApiService.instance.post<void>(
+            '/file/move',
+            data: <String, dynamic>{
+              'uris': candidateUris,
+              'dst': dst,
+              'copy': true,
+            },
+            headers: <String, dynamic>{
+              'Content-Type': 'application/json',
+              'X-Cr-Context-Hint': hint,
+            },
+          );
+          return;
+        } catch (e) {
+          lastError = e;
+        }
+      }
+    }
+
+    throw lastError ?? Exception('转存失败');
+  }
+
+  static List<String> _uriCandidates(
+    String uri, {
+    String? shareId,
+    String? password,
+    String? fileName,
+    bool includeRootFallback = true,
+  }) {
+    final values = <String>[];
+
+    void add(String? value) {
+      final text = value?.trim();
+      if (text != null && text.isNotEmpty && !values.contains(text)) {
+        values.add(text);
+      }
+    }
+
+    final shareUriCandidates = _shareScopedUriCandidates(
+      uri,
+      shareId: shareId,
+      password: password,
+    );
+
+    // 官方页面进入的是 cloudreve://{shareId}@share 文件系统；
+    // 如果 /file 返回了 cloudreve://my/... 或 owner@my/...，
+    // 转存/下载时也要先折算成 share 文件系统里的相对路径。
+    for (final item in shareUriCandidates) {
+      add(item);
+    }
+
+    final name = fileName?.trim();
+    final id = shareId?.trim();
+    if (id != null && id.isNotEmpty && name != null && name.isNotEmpty) {
+      final root = shareRootUri(
+        shareId: id,
+        password: password,
+        trailingSlash: false,
+      );
+      add('$root/${Uri.encodeComponent(name)}');
+      add('$root/${_encodeCloudrevePath(name)}');
+    }
+
+    add(_withSharePassword(uri, shareId: shareId, password: password));
+    add(uri);
+
+    if (uri.startsWith('cloudreve://')) {
+      final withPassword = _withSharePassword(uri, shareId: shareId, password: password);
+      if (withPassword != uri) add(withPassword);
+
+      final slash = uri.indexOf('/', 'cloudreve://'.length);
+      if (slash > 0) {
+        final prefix = uri.substring(0, slash + 1);
+        final path = slash < uri.length - 1 ? uri.substring(slash + 1) : '';
+        if (path.isNotEmpty) {
+          final encodedPath = _encodeCloudrevePath(path);
+          add(_withSharePassword('$prefix$encodedPath', shareId: shareId, password: password));
+          add('$prefix$encodedPath');
+        }
+        if (!uri.endsWith('/')) {
+          add(_withSharePassword('$uri/', shareId: shareId, password: password));
+          add('$uri/');
+        }
+      }
+    }
+
+    if (includeRootFallback && shareId != null && shareId.trim().isNotEmpty) {
+      add(shareRootUri(shareId: shareId, password: password, trailingSlash: true));
+      add(shareRootUri(shareId: shareId, password: password, trailingSlash: false));
+    }
+
+    return values;
+  }
+
+  static List<String> _shareScopedUriCandidates(
+    String uri, {
+    String? shareId,
+    String? password,
+  }) {
+    final id = shareId?.trim();
+    if (id == null || id.isEmpty || !uri.startsWith('cloudreve://')) {
+      return const <String>[];
+    }
+
+    final values = <String>[];
+    void add(String? value) {
+      final text = value?.trim();
+      if (text != null && text.isNotEmpty && !values.contains(text)) {
+        values.add(text);
+      }
+    }
+
+    final authorityStart = 'cloudreve://'.length;
+    final slash = uri.indexOf('/', authorityStart);
+    final authority = slash >= 0 ? uri.substring(authorityStart, slash) : uri.substring(authorityStart);
+    final rawPath = slash >= 0 && slash < uri.length - 1 ? uri.substring(slash + 1) : '';
+    final decodedPath = rawPath
+        .split('/')
+        .where((segment) => segment.isNotEmpty)
+        .map((segment) => Uri.decodeComponent(segment))
+        .join('/');
+
+    final isShareAuthority = authority.endsWith('@share');
+    if (isShareAuthority) {
+      add(_withSharePassword(uri, shareId: id, password: password));
+      add(uri);
+      return values;
+    }
+
+    if (decodedPath.isEmpty) return values;
+
+    final pathParts = decodedPath.split('/').where((e) => e.isNotEmpty).toList();
+    final root = shareRootUri(shareId: id, password: password, trailingSlash: false);
+
+    // 完整路径候选：cloudreve://id@share/folder/file.ext
+    add('$root/${_encodeCloudrevePath(decodedPath)}');
+
+    // 单文件分享或列表返回 owner 的 my 路径时，官方 share 根目录下通常就是文件本身，
+    // 因此还要尝试 basename 候选：cloudreve://id@share/file.ext
+    if (pathParts.isNotEmpty) {
+      add('$root/${Uri.encodeComponent(pathParts.last)}');
+    }
+
+    // 如果原 path 形如 Folder/Sub/File，分享根可能是 Folder，子项在 share 中应为 Sub/File。
+    if (pathParts.length > 1) {
+      final withoutFirst = pathParts.skip(1).join('/');
+      add('$root/${_encodeCloudrevePath(withoutFirst)}');
+    }
+
+    return values;
+  }
+
+  static String _encodeCloudrevePath(String path) {
+    return path
+        .split('/')
+        .where((segment) => segment.isNotEmpty)
+        .map((segment) => Uri.encodeComponent(Uri.decodeComponent(segment)))
+        .join('/');
+  }
+
+  static String _withSharePassword(String uri, {String? shareId, String? password}) {
+    final pw = password?.trim();
+    final id = shareId?.trim();
+    if (pw == null || pw.isEmpty || id == null || id.isEmpty) return uri;
+    if (!uri.startsWith('cloudreve://')) return uri;
+
+    final authorityStart = 'cloudreve://'.length;
+    final slash = uri.indexOf('/', authorityStart);
+    final authority = slash >= 0 ? uri.substring(authorityStart, slash) : uri.substring(authorityStart);
+    final rest = slash >= 0 ? uri.substring(slash) : '';
+    if (!authority.endsWith('@share')) return uri;
+    if (authority.contains(':')) return uri;
+
+    final encodedId = Uri.encodeComponent(id);
+    final encodedPw = Uri.encodeComponent(pw);
+    if (authority != '$encodedId@share' && authority != '$id@share') return uri;
+    return 'cloudreve://$encodedId:$encodedPw@share$rest';
+  }
+
+  static String shareRootUri({
+    required String shareId,
+    String? password,
+    bool trailingSlash = true,
+  }) {
+    final id = Uri.encodeComponent(shareId.trim());
+    final pw = password?.trim();
+    final userInfo = pw == null || pw.isEmpty
+        ? id
+        : '$id:${Uri.encodeComponent(pw)}';
+    return 'cloudreve://$userInfo@share${trailingSlash ? '/' : ''}';
+  }
+
+  static bool isShareRootUri(String uri, {String? shareId}) {
+    final text = uri.trim();
+    const prefix = 'cloudreve://';
+    if (!text.startsWith(prefix)) return false;
+
+    final authorityStart = prefix.length;
+    final slash = text.indexOf('/', authorityStart);
+    final authority = slash >= 0
+        ? text.substring(authorityStart, slash)
+        : text.substring(authorityStart);
+    if (!authority.endsWith('@share')) return false;
+
+    final path = slash >= 0 ? text.substring(slash) : '';
+    if (path.isNotEmpty && path != '/') return false;
+
+    final expectedId = shareId?.trim();
+    if (expectedId == null || expectedId.isEmpty) return true;
+
+    final userInfo = authority.substring(0, authority.length - '@share'.length);
+    final rawId = userInfo.split(':').first;
+    return Uri.decodeComponent(rawId) == expectedId || rawId == expectedId;
+  }
+
+
+  static String? _extractDownloadUrl(Map<String, dynamic> data) {
+    final direct = data['url'] ??
+        data['download_url'] ??
+        data['downloadUrl'] ??
+        data['src'] ??
+        data['href'];
+    if (direct is String && direct.trim().isNotEmpty) return direct.trim();
+
+    final rawUrls = data['urls'];
+    if (rawUrls is String && rawUrls.trim().isNotEmpty) return rawUrls.trim();
+    if (rawUrls is List) {
+      for (final item in rawUrls) {
+        if (item is String && item.trim().isNotEmpty) return item.trim();
+        final map = _asMap(item);
+        if (map == null) continue;
+        final url = _extractDownloadUrl(map);
+        if (url != null && url.isNotEmpty) return url;
+      }
+    }
+    if (rawUrls is Map) {
+      for (final item in rawUrls.values) {
+        if (item is String && item.trim().isNotEmpty) return item.trim();
+        final map = _asMap(item);
+        if (map == null) continue;
+        final url = _extractDownloadUrl(map);
+        if (url != null && url.isNotEmpty) return url;
+      }
+    }
+    return null;
+  }
+
+  static List<List<String>> _cartesianUriCandidates(List<List<String>> sets) {
+    if (sets.isEmpty) return const [[]];
+
+    var result = <List<String>>[const []];
+    for (final set in sets) {
+      final next = <List<String>>[];
+      for (final prefix in result) {
+        for (final item in set) {
+          next.add(<String>[...prefix, item]);
+        }
+      }
+      result = next;
+    }
+    return result;
+  }
+
+  static String _firstContextHint(String? contextHint) {
+    final value = contextHint?.trim();
+    return value == null || value.isEmpty ? 'share' : value;
+  }
+
+  static List<String> _contextHintCandidates(String? contextHint, {String? shareId}) {
+    final values = <String>[];
+    void add(String? value) {
+      final text = value?.trim();
+      if (text != null && text.isNotEmpty && !values.contains(text)) {
+        values.add(text);
+      }
+    }
+
+    add(contextHint);
+    add(shareId);
+    if (shareId != null && shareId.trim().isNotEmpty) {
+      add('share:${shareId.trim()}');
+      add('share_${shareId.trim()}');
+    }
+    add('share');
+    return values;
+  }
+
+  static String? _headerValue(Headers headers, String name) {
+    final direct = headers.value(name) ?? headers.value(name.toLowerCase());
+    if (direct != null && direct.isNotEmpty) return direct;
+
+    final lower = name.toLowerCase();
+    for (final entry in headers.map.entries) {
+      if (entry.key.toLowerCase() == lower && entry.value.isNotEmpty) {
+        return entry.value.first;
+      }
+    }
+    return null;
+  }
+
+  static Map<String, dynamic>? _asMap(dynamic value) {
+    if (value is Map<String, dynamic>) return value;
+    if (value is Map) return Map<String, dynamic>.from(value);
+    return null;
+  }
+}

lib/services/share_service.dart

@@ -1,7 +1,54 @@
+import 'package:dio/dio.dart';
 import 'api_service.dart';
+import '../core/exceptions/app_exception.dart';
 import '../data/models/share_model.dart';
 import '../core/utils/app_logger.dart';
 
+/// 分享授权对象类型。
+enum SharePrincipalType { user, group }
+
+/// 分享弹窗中搜索并加入的用户/用户组。
+class SharePrincipal {
+  final String id;
+  final String name;
+  final String? email;
+  final String? groupName;
+  final SharePrincipalType type;
+
+  const SharePrincipal({
+    required this.id,
+    required this.name,
+    required this.type,
+    this.email,
+    this.groupName,
+  });
+
+  factory SharePrincipal.userFromJson(Map<String, dynamic> json) {
+    final group = _asMap(json['group']);
+    return SharePrincipal(
+      id: json['id']?.toString() ?? '',
+      name: (json['nickname'] ?? json['email'] ?? json['id'] ?? '用户').toString(),
+      email: json['email']?.toString(),
+      groupName: group?['name']?.toString(),
+      type: SharePrincipalType.user,
+    );
+  }
+
+  factory SharePrincipal.groupFromJson(Map<String, dynamic> json) {
+    return SharePrincipal(
+      id: json['id']?.toString() ?? '',
+      name: (json['name'] ?? json['id'] ?? '用户组').toString(),
+      type: SharePrincipalType.group,
+    );
+  }
+
+  static Map<String, dynamic>? _asMap(dynamic value) {
+    if (value is Map<String, dynamic>) return value;
+    if (value is Map) return Map<String, dynamic>.from(value);
+    return null;
+  }
+}
+
 /// 分享服务
 class ShareService {
   /// 将文件系统路径转换为 cloudreve URI 格式
@@ -17,33 +64,98 @@ class ShareService {
     return 'cloudreve://my/$cleanPath';
   }
 
-  /// 创建分享链接
+  /// 创建分享链接。
+  ///
+  /// Cloudreve V4 接口为 PUT /share，核心字段包括 permissions、uri、
+  /// is_private、share_view、expire、price、password、show_readme。
   Future<String> createShare({
     required String uri,
+    Map<String, dynamic>? permissions,
     bool? isPrivate,
     bool? shareView,
     int? expire,
+    int? downloads,
     int? price,
     String? password,
     bool? showReadme,
   }) async {
     final data = <String, dynamic>{
-      'permissions': {'anonymous': 'BQ==', 'everyone': 'AQ=='},
+      'permissions': permissions ?? {'anonymous': 'BQ==', 'everyone': 'AQ=='},
       'uri': _toCloudreveUri(uri),
-      'is_private': ?isPrivate,
-      'share_view': ?shareView,
-      'expire': ?expire,
-      'price': ?price,
-      'password': ?password,
-      'show_readme': ?showReadme,
     };
-    // 当请求的接口为创建分享时, 逻辑上不适合走到 _parseResponse -> ApiResponse.fromJson 直接返回结果即可
+
+    if (isPrivate != null) data['is_private'] = isPrivate;
+    if (shareView != null) data['share_view'] = shareView;
+    if (expire != null) data['expire'] = expire;
+    if (downloads != null) data['downloads'] = downloads;
+    if (price != null) data['price'] = price;
+    if (password != null && password.isNotEmpty) data['password'] = password;
+    if (showReadme != null) data['show_readme'] = showReadme;
+
     final response = await ApiService.instance.put<Map<String, dynamic>>(
       '/share',
       data: data,
       isNoData: true,
     );
-    return response['data'] as String;
+    final raw = response['data'];
+    return raw?.toString() ?? '';
+  }
+
+  /// 搜索用户，用于分享权限显式授权。
+  Future<List<SharePrincipal>> searchUsers(String keyword) async {
+    final trimmed = keyword.trim();
+    if (trimmed.isEmpty) return const [];
+
+    final response = await ApiService.instance.get<dynamic>(
+      '/user/search',
+      queryParameters: {'keyword': trimmed},
+    );
+
+    return _extractList(response)
+        .whereType<Map>()
+        .map((e) => SharePrincipal.userFromJson(Map<String, dynamic>.from(e)))
+        .where((e) => e.id.isNotEmpty)
+        .toList();
+  }
+
+  /// 列出用户组，用于分享权限显式授权。
+  ///
+  /// Cloudreve Pro 才支持 /group/list，非 Pro 或无权限时返回 null。
+  /// 调用方据此决定是否提示用户。
+  Future<List<SharePrincipal>?> listGroups() async {
+    try {
+      final response = await ApiService.instance.get<dynamic>(
+        '/group/list',
+        silent404: true,
+      );
+
+      return _extractList(response)
+          .whereType<Map>()
+          .map((e) => SharePrincipal.groupFromJson(Map<String, dynamic>.from(e)))
+          .where((e) => e.id.isNotEmpty)
+          .toList();
+    } on DioException catch (e) {
+      if (e.response?.statusCode == 404) return null;
+      rethrow;
+    } on AppException catch (e) {
+      if (e.code == 404) return null;
+      rethrow;
+    }
+  }
+
+  List<dynamic> _extractList(dynamic value) {
+    if (value is List) return value;
+    if (value is Map) {
+      final data = value['data'];
+      if (data is List) return data;
+      final items = value['items'];
+      if (items is List) return items;
+      final groups = value['groups'];
+      if (groups is List) return groups;
+      final users = value['users'];
+      if (users is List) return users;
+    }
+    return const [];
   }
 
   /// 获取我的分享列表
@@ -55,11 +167,11 @@ class ShareService {
   }) async {
     final queryParams = <String, dynamic>{
       'page_size': pageSize,
-      'order_by': ?orderBy,
-      'order_direction': ?orderDirection,
-      'next_page_token': ?nextPageToken,
     };
-    // 请求方法为get, claude 写成post, fixed
+    if (orderBy != null) queryParams['order_by'] = orderBy;
+    if (orderDirection != null) queryParams['order_direction'] = orderDirection;
+    if (nextPageToken != null) queryParams['next_page_token'] = nextPageToken;
+
     return await ApiService.instance.get<Map<String, dynamic>>(
       '/share',
       queryParameters: queryParams,
@@ -79,13 +191,10 @@ class ShareService {
     if (ownerExtended != null) {
       queryParams['owner_extended'] = ownerExtended.toString();
     }
-    // 获取分享详情是 GET 请求
     final response = await ApiService.instance.get<Map<String, dynamic>>(
       '/share/info/$id',
       queryParameters: queryParams,
     );
-    // 获取分享详情返回的 response 已经经过 _parseResponse -> ApiResponse.fromJson 处理, 不需要再通过 ['data'] 获取数据
-    // return ShareModel.fromJson(response['data'] as Map<String, dynamic>);
     return ShareModel.fromJson(response);
   }
 
@@ -93,19 +202,26 @@ class ShareService {
   Future<String> editShare({
     required String id,
     required String uri,
+    Map<String, dynamic>? permissions,
     bool? isPrivate,
     String? password,
     bool? shareView,
     int? downloads,
     int? expire,
+    int? price,
+    bool? showReadme,
   }) async {
     final data = <String, dynamic>{
       'uri': uri,
-      'is_private': ?isPrivate,
-      'share_view': ?shareView,
-      'downloads': ?downloads,
-      'expire': ?expire,
     };
+
+    if (permissions != null) data['permissions'] = permissions;
+    if (isPrivate != null) data['is_private'] = isPrivate;
+    if (shareView != null) data['share_view'] = shareView;
+    if (downloads != null) data['downloads'] = downloads;
+    if (expire != null) data['expire'] = expire;
+    if (price != null) data['price'] = price;
+    if (showReadme != null) data['show_readme'] = showReadme;
     if (password != null && password.isNotEmpty) {
       data['password'] = password;
     }
@@ -116,7 +232,8 @@ class ShareService {
       data: data,
       isNoData: true,
     );
-    return response['data'] as String;
+    final raw = response['data'];
+    return raw?.toString() ?? '';
   }
 
   /// 删除分享

lib/services/storage_service.dart

@@ -1,5 +1,6 @@
 import 'dart:convert';
 import 'package:shared_preferences/shared_preferences.dart';
+import 'package:uuid/uuid.dart';
 import '../core/constants/storage_keys.dart';
 import '../data/models/server_model.dart';
 
@@ -80,11 +81,13 @@ class StorageService {
 
   /// 设置
   Future<String?> get themeMode => getString(StorageKeys.themeMode);
-  Future<bool> setThemeMode(String value) => setString(StorageKeys.themeMode, value);
+  Future<bool> setThemeMode(String value) =>
+      setString(StorageKeys.themeMode, value);
 
   /// 服务器地址配置
   Future<String?> get customBaseUrl => getString(StorageKeys.customBaseUrl);
-  Future<bool> setCustomBaseUrl(String? value) => setString(StorageKeys.customBaseUrl, value);
+  Future<bool> setCustomBaseUrl(String? value) =>
+      setString(StorageKeys.customBaseUrl, value);
   Future<bool> removeCustomBaseUrl() => remove(StorageKeys.customBaseUrl);
 
   /// 服务器列表
@@ -114,8 +117,10 @@ class StorageService {
   }
 
   /// 上次选中的服务器 label
-  Future<String?> get lastSelectedServerLabel => getString(StorageKeys.lastSelectedServer);
-  Future<bool> setLastSelectedServerLabel(String? value) => setString(StorageKeys.lastSelectedServer, value);
+  Future<String?> get lastSelectedServerLabel =>
+      getString(StorageKeys.lastSelectedServer);
+  Future<bool> setLastSelectedServerLabel(String? value) =>
+      setString(StorageKeys.lastSelectedServer, value);
 
   /// 搜索历史（最新在前，最多 20 条）
   Future<List<String>> getSearchHistory() async {
@@ -149,4 +154,74 @@ class StorageService {
   Future<void> clearSearchHistory() async {
     await remove(StorageKeys.searchHistory);
   }
+
+  // ===== 同步配置持久化 =====
+
+  /// 保存同步配置
+  Future<bool> setSyncConfig(Map<String, dynamic> config) async {
+    try {
+      final json = jsonEncode(config);
+      return await setString(StorageKeys.syncConfig, json);
+    } catch (_) {
+      return false;
+    }
+  }
+
+  /// 读取同步配置
+  Future<Map<String, dynamic>?> getSyncConfig() async {
+    final json = await getString(StorageKeys.syncConfig);
+    if (json == null || json.isEmpty) return null;
+    try {
+      return jsonDecode(json) as Map<String, dynamic>;
+    } catch (_) {
+      return null;
+    }
+  }
+
+  /// 保存同步状态
+  Future<bool> setSyncState(String state) async {
+    return await setString(StorageKeys.syncState, state);
+  }
+
+  /// 读取同步状态
+  Future<String?> getSyncState() async {
+    return await getString(StorageKeys.syncState);
+  }
+
+  /// 清除同步配置和状态
+  Future<void> clearSyncData() async {
+    await remove(StorageKeys.syncConfig);
+    await remove(StorageKeys.syncState);
+    await remove(StorageKeys.syncCumStats);
+  }
+
+  /// 保存同步累积统计
+  Future<bool> setSyncCumStats(Map<String, int> stats) async {
+    final json = jsonEncode(stats);
+    return await setString(StorageKeys.syncCumStats, json);
+  }
+
+  /// 读取同步累积统计
+  Future<Map<String, int>?> getSyncCumStats() async {
+    final json = await getString(StorageKeys.syncCumStats);
+    if (json == null) return null;
+    try {
+      final map = jsonDecode(json) as Map<String, dynamic>;
+      return map.map((k, v) => MapEntry(k, v as int));
+    } catch (_) {
+      return null;
+    }
+  }
+
+  // ===== client_id 持久化 =====
+
+  /// 获取 client_id，首次调用自动生成并持久化
+  Future<String> getOrCreateClientId() async {
+    var id = await getString(StorageKeys.clientId);
+    if (id == null || id.isEmpty) {
+      id = const Uuid().v4();
+      await setString(StorageKeys.clientId, id);
+    }
+    return id;
+  }
 }

lib/services/sync_service.dart

@@ -0,0 +1,329 @@
+import 'dart:async';
+
+import '../core/utils/app_logger.dart';
+import '../data/models/sync_config_model.dart';
+import '../data/models/sync_event_model.dart';
+import '../data/models/sync_status_model.dart';
+import '../data/models/sync_task_model.dart';
+import '../src/rust/api/ffi.dart' as ffi;
+import '../src/rust/api/ffi_types.dart' as ffi_types;
+
+/// 同步服务单例 - 桥接 Flutter UI 和 Rust 同步引擎
+class SyncService {
+  static final SyncService instance = SyncService._();
+  SyncService._();
+
+  bool _initialized = false;
+  StreamSubscription<ffi_types.SyncEventFfi>? _rustEventSub;
+
+  /// 事件流，供 SyncProvider 订阅
+  final _eventController = StreamController<SyncEventModel>.broadcast();
+  Stream<SyncEventModel> get events => _eventController.stream;
+
+  /// 初始化同步引擎（已初始化时更新配置）
+  Future<void> init(SyncConfigModel config) async {
+    if (_initialized) {
+      AppLogger.d(
+        '[FFI] → updateSyncConfig: mode=${config.syncMode}, conflict=${config.conflictStrategy}, concurrent=${config.maxConcurrentTransfers}, bandwidth=${config.bandwidthLimitKbps}kbps',
+      );
+      await ffi.updateSyncConfig(config: config.toFfi());
+      AppLogger.d('[FFI] ← updateSyncConfig: ok');
+      return;
+    }
+
+    AppLogger.d(
+      '[FFI] → initSyncEngine: localRoot=${config.localRoot}, mode=${config.syncMode}, conflict=${config.conflictStrategy}, logLevel=${config.logLevel}',
+    );
+
+    await ffi.initSyncEngine(config: config.toFfi());
+
+    _initialized = true;
+    _subscribeRustEvents();
+    AppLogger.d('[FFI] ← initSyncEngine: ok');
+  }
+
+  /// 执行初始全量同步
+  Future<SyncSummaryModel> startInitialSync() async {
+    AppLogger.d('[FFI] → startInitialSync');
+    final summary = await ffi.startInitialSync();
+    AppLogger.d(
+      '[FFI] ← startInitialSync: uploaded=${summary.uploaded}, downloaded=${summary.downloaded}, conflicts=${summary.conflicts}, failed=${summary.failed}',
+    );
+    return SyncSummaryModel.fromFfi(summary);
+  }
+
+  /// 启动持续同步
+  Future<void> startContinuousSync() async {
+    AppLogger.d('[FFI] → startContinuousSync');
+    await ffi.startContinuousSync();
+    AppLogger.d('[FFI] ← startContinuousSync: spawned');
+  }
+
+  /// 停止同步
+  Future<void> stop() async {
+    AppLogger.d('[FFI] → stopSync');
+    await ffi.stopSync();
+    AppLogger.d('[FFI] ← stopSync: ok');
+  }
+
+  /// 暂停同步
+  Future<void> pause() async {
+    AppLogger.d('[FFI] → pauseSync');
+    await ffi.pauseSync();
+    AppLogger.d('[FFI] ← pauseSync: ok');
+  }
+
+  /// 恢复同步
+  Future<void> resume() async {
+    AppLogger.d('[FFI] → resumeSync');
+    await ffi.resumeSync();
+    AppLogger.d('[FFI] ← resumeSync: ok');
+  }
+
+  /// 强制重新同步
+  Future<SyncSummaryModel> forceSync() async {
+    AppLogger.d('[FFI] → forceSync');
+    final summary = await ffi.forceSync();
+    AppLogger.d(
+      '[FFI] ← forceSync: uploaded=${summary.uploaded}, downloaded=${summary.downloaded}, conflicts=${summary.conflicts}, failed=${summary.failed}',
+    );
+    return SyncSummaryModel.fromFfi(summary);
+  }
+
+  /// Token 变更时推送给 Rust
+  Future<void> updateTokens(String accessToken) async {
+    AppLogger.d('[FFI] → updateTokens: token_len=${accessToken.length}');
+    await ffi.updateTokens(accessToken: accessToken);
+    AppLogger.d('[FFI] ← updateTokens: ok');
+  }
+
+  /// 更新同步配置（推送到 Rust 引擎，引擎未初始化时忽略）
+  Future<void> updateConfig(SyncConfigModel config) async {
+    if (!_initialized) return;
+    AppLogger.d(
+      '[FFI] → updateSyncConfig: mode=${config.syncMode}, conflict=${config.conflictStrategy}, concurrent=${config.maxConcurrentTransfers}, bandwidth=${config.bandwidthLimitKbps}kbps',
+    );
+    try {
+      await ffi.updateSyncConfig(config: config.toFfi());
+      AppLogger.d('[FFI] ← updateSyncConfig: ok');
+    } catch (e) {
+      AppLogger.e('[FFI] ← updateSyncConfig: error=$e');
+    }
+  }
+
+  // ========== 以下为轮询/查询类，用 trace 避免刷屏 ==========
+
+  /// 获取同步状态快照（轮询高频调用，trace 级别）
+  Future<SyncStatusModel> getStatus() async {
+    final status = await ffi.getSyncStatus();
+    AppLogger.t(
+      '[FFI] ← getSyncStatus: state=${status.state}, synced=${status.syncedFiles}, total=${status.totalFiles}',
+    );
+    return SyncStatusModel.fromFfi(status);
+  }
+
+  /// 获取活跃 Worker 数量（轮询高频调用，trace 级别）
+  Future<int> getActiveWorkerCount() async {
+    final count = await ffi.getActiveWorkerCount();
+    AppLogger.t('[FFI] ← getActiveWorkerCount: $count');
+    return count;
+  }
+
+  /// 获取活跃的同步任务列表（轮询高频调用，trace 级别）
+  Future<List<SyncTaskModel>> getActiveTasksTyped() async {
+    final tasks = await ffi.getActiveTasks();
+    AppLogger.t('[FFI] ← getActiveTasks: count=${tasks.length}');
+    return tasks
+        .map(
+          (t) => SyncTaskModel(
+            id: t.id,
+            trigger: t.trigger,
+            totalCount: t.totalCount,
+            completedCount: t.completedCount,
+            failedCount: t.failedCount,
+            status: t.status,
+            createdAt: t.createdAt,
+            updatedAt: t.updatedAt,
+            finishedAt: t.finishedAt,
+          ),
+        )
+        .toList();
+  }
+
+  /// 获取最近同步任务列表（轮询高频调用，trace 级别）
+  Future<List<SyncTaskModel>> getRecentTasksTyped({int limit = 20}) async {
+    AppLogger.t('[FFI] → getRecentTasks: limit=$limit');
+    final tasks = await ffi.getRecentTasks(limit: limit);
+    AppLogger.t('[FFI] ← getRecentTasks: count=${tasks.length}');
+    return tasks
+        .map(
+          (t) => SyncTaskModel(
+            id: t.id,
+            trigger: t.trigger,
+            totalCount: t.totalCount,
+            completedCount: t.completedCount,
+            failedCount: t.failedCount,
+            status: t.status,
+            createdAt: t.createdAt,
+            updatedAt: t.updatedAt,
+            finishedAt: t.finishedAt,
+          ),
+        )
+        .toList();
+  }
+
+  /// 获取任务详情（按需查询，trace 级别）
+  Future<List<SyncTaskItemModel>> getTaskDetailTyped(String taskId) async {
+    AppLogger.t('[FFI] → getTaskDetail: taskId=$taskId');
+    final items = await ffi.getTaskDetail(taskId: taskId);
+    AppLogger.t('[FFI] ← getTaskDetail: count=${items.length}');
+    return items
+        .map(
+          (i) => SyncTaskItemModel(
+            id: i.id.toInt(),
+            taskId: i.taskId,
+            relativePath: i.relativePath,
+            actionType: i.actionType,
+            status: i.status,
+            fileSize: i.fileSize.toInt(),
+            errorMessage: i.errorMessage,
+            createdAt: i.createdAt,
+            updatedAt: i.updatedAt,
+          ),
+        )
+        .toList();
+  }
+
+  /// 分页查询任务详情（trace 级别）
+  Future<List<SyncTaskItemModel>> queryTaskItemsTyped({
+    required String taskId,
+    int limit = 20,
+    int offset = 0,
+  }) async {
+    AppLogger.t(
+      '[FFI] → queryTaskItems: taskId=$taskId, limit=$limit, offset=$offset',
+    );
+    final items = await ffi.queryTaskItems(
+      filter: ffi_types.TaskItemFilterFfi(
+        taskId: taskId,
+        limit: limit,
+        offset: offset,
+      ),
+    );
+    AppLogger.t('[FFI] ← queryTaskItems: count=${items.length}');
+    return items
+        .map(
+          (i) => SyncTaskItemModel(
+            id: i.id.toInt(),
+            taskId: i.taskId,
+            relativePath: i.relativePath,
+            actionType: i.actionType,
+            status: i.status,
+            fileSize: i.fileSize.toInt(),
+            errorMessage: i.errorMessage,
+            createdAt: i.createdAt,
+            updatedAt: i.updatedAt,
+          ),
+        )
+        .toList();
+  }
+
+  /// 从 DB 聚合累积统计（轮询高频调用，trace 级别）
+  Future<Map<String, int>> getCumStats() async {
+    AppLogger.t('[FFI] → getSyncCumStats');
+    final stats = await ffi.getSyncCumStats();
+    AppLogger.t(
+      '[FFI] ← getSyncCumStats: uploaded=${stats.uploaded}, downloaded=${stats.downloaded}, failed=${stats.failed}, conflicts=${stats.conflicts}, deletedLocal=${stats.deletedLocal}, deletedRemote=${stats.deletedRemote}, skipped=${stats.skipped}',
+    );
+    return {
+      'uploaded': stats.uploaded,
+      'downloaded': stats.downloaded,
+      'renamed': stats.renamed,
+      'moved': stats.moved,
+      'failed': stats.failed,
+      'conflicts': stats.conflicts,
+      'deleted_local': stats.deletedLocal,
+      'deleted_remote': stats.deletedRemote,
+      'skipped': stats.skipped,
+    };
+  }
+
+  // ========== 以下为低频操作，保持 debug 级别 ==========
+
+  /// 水合文件 (Windows CFAPi)
+  Future<void> hydrateFile(String localPath) async {
+    AppLogger.d('[FFI] → hydrateFile: path=$localPath');
+    await ffi.hydrateFile(localPath: localPath);
+    AppLogger.d('[FFI] ← hydrateFile: ok');
+  }
+
+  /// 检查云端相册目录 (Android)
+  Future<Map<String, dynamic>> checkCloudAlbumDirs(String baseUri) async {
+    AppLogger.d('[FFI] → checkCloudAlbumDirs: uri=$baseUri');
+    final result = await ffi.checkCloudAlbumDirs(baseUri: baseUri);
+    AppLogger.d(
+      '[FFI] ← checkCloudAlbumDirs: dcim=${result.dcimExists}, pictures=${result.picturesExists}, camera=${result.cameraExists}',
+    );
+    return {
+      'dcimExists': result.dcimExists,
+      'picturesExists': result.picturesExists,
+      'dcimUri': result.dcimUri,
+      'picturesUri': result.picturesUri,
+      'cameraExists': result.cameraExists,
+      'cameraUri': result.cameraUri,
+    };
+  }
+
+  /// 创建云端相册目录 (Android)
+  Future<void> createCloudAlbumDirs(String baseUri) async {
+    AppLogger.d('[FFI] → createCloudAlbumDirs: uri=$baseUri');
+    await ffi.createCloudAlbumDirs(baseUri: baseUri);
+    AppLogger.d('[FFI] ← createCloudAlbumDirs: ok');
+  }
+
+  /// 销毁同步引擎
+  Future<void> dispose() async {
+    AppLogger.d('[FFI] → disposeSyncEngine');
+    _rustEventSub?.cancel();
+    _rustEventSub = null;
+    await _eventController.close();
+    await ffi.disposeSyncEngine();
+    _initialized = false;
+    AppLogger.d('[FFI] ← disposeSyncEngine: ok');
+  }
+
+  /// 订阅 Rust 事件流，转换后转发到 _eventController
+  void _subscribeRustEvents() {
+    _rustEventSub?.cancel();
+    try {
+      final stream = ffi.registerSyncEventSink();
+      _rustEventSub = stream.listen(
+        (event) {
+          final model = syncEventFromFfi(event);
+          if (model != null && !_eventController.isClosed) {
+            _eventController.add(model);
+          }
+        },
+        onError: (e) => AppLogger.e('[FFI] Rust event stream error: $e'),
+        onDone: () => AppLogger.d('[FFI] Rust event stream done'),
+      );
+      AppLogger.d('[FFI] Rust event stream subscribed');
+    } catch (e) {
+      AppLogger.e('[FFI] Failed to subscribe Rust event stream: $e');
+    }
+  }
+
+  /// 热修改日志级别（立即生效，无需重启）
+  Future<void> setLogLevel(String level) async {
+    AppLogger.d('[FFI] → setSyncLogLevel: level=$level');
+    await ffi.setSyncLogLevel(level: level);
+    AppLogger.d('[FFI] ← setSyncLogLevel: ok');
+  }
+
+  /// 重置同步：停止任务 → 清空 DB → 清空本地目录 → 回到初始状态
+  Future<void> resetSync({bool deleteLocalFiles = true}) async {
+    AppLogger.d('[FFI] → resetSync: deleteLocalFiles=$deleteLocalFiles');
+    await ffi.resetSync(deleteLocalFiles: deleteLocalFiles);
+    AppLogger.d('[FFI] ← resetSync: ok');
+  }
+}

lib/services/update_service.dart

@@ -0,0 +1,434 @@
+import 'dart:io';
+
+import 'package:dio/dio.dart';
+import 'package:flutter/foundation.dart';
+import 'package:open_file/open_file.dart';
+import 'package:package_info_plus/package_info_plus.dart';
+import 'package:path/path.dart' as p;
+import 'package:path_provider/path_provider.dart';
+import 'package:url_launcher/url_launcher.dart';
+import 'package:xml/xml.dart';
+
+import '../core/constants/storage_keys.dart';
+import '../core/utils/app_logger.dart';
+import '../data/models/app_update_model.dart';
+import 'storage_service.dart';
+
+class UpdateService extends ChangeNotifier {
+  UpdateService._()
+    : _dio = Dio(_dioOptions),
+      _packageInfoProvider = PackageInfo.fromPlatform;
+
+  @visibleForTesting
+  UpdateService.test({
+    Dio? dio,
+    Future<PackageInfo> Function()? packageInfoProvider,
+  }) : _dio = dio ?? Dio(_dioOptions),
+       _packageInfoProvider = packageInfoProvider ?? PackageInfo.fromPlatform;
+
+  static final UpdateService instance = UpdateService._();
+
+  static final Uri releasesRssUrl = Uri.parse(
+    'https://git.saont.net/gongyun/app/releases.rss',
+  );
+  static final Uri releasesPageUrl = Uri.parse(
+    'https://git.saont.net/gongyun/app/releases',
+  );
+  static final Uri downloadsPageUrl = Uri.parse(
+    'https://www.gongyun.org/downloads.html',
+  );
+
+  static final BaseOptions _dioOptions = BaseOptions(
+    connectTimeout: const Duration(seconds: 12),
+    receiveTimeout: const Duration(seconds: 20),
+    followRedirects: true,
+    responseType: ResponseType.plain,
+  );
+
+  final Dio _dio;
+  final Future<PackageInfo> Function() _packageInfoProvider;
+
+  bool _checking = false;
+  AppUpdateInfo? _availableUpdate;
+
+  AppUpdateInfo? get availableUpdate => _availableUpdate;
+  bool get hasUpdate => _availableUpdate != null;
+
+  Future<AppUpdateInfo?> checkForUpdate() async {
+    if (_checking) return null;
+
+    _checking = true;
+    try {
+      final current = await _packageInfoProvider();
+      final latest = await _fetchLatestRelease(currentVersion: current.version);
+      if (latest == null ||
+          _compareVersions(latest.version, current.version) <= 0) {
+        _setAvailableUpdate(null);
+        return null;
+      }
+      _setAvailableUpdate(latest);
+      return latest;
+    } catch (e, stackTrace) {
+      AppLogger.e('检查更新失败: $e\n$stackTrace');
+      return null;
+    } finally {
+      _checking = false;
+    }
+  }
+
+  Future<bool> shouldShowPrompt(AppUpdateInfo update) async {
+    final storage = StorageService.instance;
+    final skipVersion = await storage.getString(
+      StorageKeys.updatePromptSkipVersion,
+    );
+    final skipUntil = await storage.getInt(StorageKeys.updatePromptSkipUntil);
+    if (skipVersion != update.version || skipUntil == null) return true;
+
+    final now = DateTime.now().millisecondsSinceEpoch;
+    if (skipUntil > now) return false;
+
+    await storage.remove(StorageKeys.updatePromptSkipUntil);
+    await storage.remove(StorageKeys.updatePromptSkipVersion);
+    return true;
+  }
+
+  Future<void> skipPromptForFiveDays(AppUpdateInfo update) async {
+    final skipUntil = DateTime.now()
+        .add(const Duration(days: 5))
+        .millisecondsSinceEpoch;
+    final storage = StorageService.instance;
+    await storage.setString(
+      StorageKeys.updatePromptSkipVersion,
+      update.version,
+    );
+    await storage.setInt(StorageKeys.updatePromptSkipUntil, skipUntil);
+  }
+
+  Future<File?> downloadUpdate(
+    AppUpdateInfo update, {
+    void Function(int received, int total)? onProgress,
+  }) async {
+    final url = update.downloadUrl;
+    if (url == null) {
+      return null;
+    }
+
+    final dir = await getTemporaryDirectory();
+    final updateDir = Directory(p.join(dir.path, 'app_updates'));
+    await updateDir.create(recursive: true);
+
+    final fileName = update.fileName ?? _fileNameFromUrl(url);
+    final file = File(p.join(updateDir.path, fileName));
+    if (await file.exists()) {
+      await file.delete();
+    }
+
+    await _dio.downloadUri(
+      url,
+      file.path,
+      onReceiveProgress: onProgress,
+      options: Options(responseType: ResponseType.bytes),
+    );
+    return file;
+  }
+
+  Future<void> openInstaller(File file) async {
+    final result = await OpenFile.open(file.path);
+    if (result.type != ResultType.done) {
+      throw Exception(result.message);
+    }
+  }
+
+  Future<void> openReleasePage(AppUpdateInfo update) async {
+    final url = update.pageUrl;
+    if (!await launchUrl(url, mode: LaunchMode.externalApplication)) {
+      throw Exception('无法打开更新页面: $url');
+    }
+  }
+
+  Future<void> openDownloadsPage() async {
+    if (!await launchUrl(
+      downloadsPageUrl,
+      mode: LaunchMode.externalApplication,
+    )) {
+      throw Exception('无法打开下载页面: $downloadsPageUrl');
+    }
+  }
+
+  Future<AppUpdateInfo?> _fetchLatestRelease({String? currentVersion}) async {
+    final response = await _dio.getUri<String>(releasesRssUrl);
+    final body = response.data;
+    if (body == null || body.trim().isEmpty) return null;
+
+    final document = XmlDocument.parse(body);
+    final items = document.findAllElements('item').toList();
+    if (items.isEmpty) return null;
+
+    final releases =
+        items.map(_releaseFromRssItem).whereType<_RssRelease>().toList()
+          ..sort(_compareRssReleaseDesc);
+    if (releases.isEmpty) return null;
+
+    for (final release in releases) {
+      if (currentVersion != null &&
+          _compareVersions(release.version, currentVersion) <= 0) {
+        continue;
+      }
+
+      final update = await _buildUpdateInfo(release);
+      if (update == null) continue;
+
+      return update;
+    }
+
+    return null;
+  }
+
+  _RssRelease? _releaseFromRssItem(XmlElement item) {
+    final title = _elementText(item, 'title') ?? '';
+    final link = _elementText(item, 'link') ?? releasesPageUrl.toString();
+    final description = _elementText(item, 'description');
+    final content = _elementText(item, 'encoded');
+    final enclosure = item
+        .findElements('enclosure')
+        .map((e) => e.getAttribute('url'))
+        .whereType<String>()
+        .map(_absoluteUriOrNull)
+        .whereType<Uri>()
+        .toList();
+
+    final candidates = <Uri>[
+      ...enclosure,
+      ..._extractLinks(description ?? ''),
+      ..._extractLinks(content ?? ''),
+      ..._extractLinks(item.toXmlString()),
+    ];
+
+    final pageUrl = _absoluteUriOrNull(link) ?? releasesPageUrl;
+    final version = _versionFromText(
+      '$title $link ${description ?? ''} ${content ?? ''}',
+    );
+    if (version == null) return null;
+
+    return _RssRelease(
+      version: version,
+      title: title.isEmpty ? 'v$version' : title,
+      description: _stripHtml(
+        (content ?? '').isNotEmpty ? content : description,
+      ),
+      pageUrl: pageUrl,
+      candidates: candidates,
+      publishedAt: _parseRssDate(_elementText(item, 'pubDate')),
+    );
+  }
+
+  Future<AppUpdateInfo?> _buildUpdateInfo(_RssRelease release) async {
+    final candidates = <Uri>[...release.candidates];
+    final downloadUrl = _pickDownloadUrl(candidates);
+    Uri? resolvedDownloadUrl = downloadUrl;
+
+    resolvedDownloadUrl ??= await _downloadUrlFromReleasePage(release.pageUrl);
+
+    return AppUpdateInfo(
+      version: release.version,
+      title: release.title,
+      description: release.description,
+      pageUrl: release.pageUrl,
+      downloadUrl: resolvedDownloadUrl,
+      fileName: resolvedDownloadUrl == null
+          ? null
+          : _fileNameFromUrl(resolvedDownloadUrl),
+      publishedAt: release.publishedAt,
+    );
+  }
+
+  Future<Uri?> _downloadUrlFromReleasePage(Uri pageUrl) async {
+    try {
+      final response = await _dio.getUri<String>(pageUrl);
+      final body = response.data;
+      if (body == null || body.trim().isEmpty) return null;
+      return _pickDownloadUrl(_extractLinks(body));
+    } catch (e) {
+      AppLogger.w('鑾峰彇鏇存柊闄勪欢澶辫触: $pageUrl $e');
+      return null;
+    }
+  }
+
+  Uri? _pickDownloadUrl(List<Uri> candidates) {
+    final normalized = candidates.toSet().toList();
+    final preferred = normalized
+        .where(_isReleaseAttachment)
+        .where(_isSupportedPackage)
+        .toList();
+    if (preferred.isNotEmpty) return preferred.first;
+    return null;
+  }
+
+  bool _isReleaseAttachment(Uri uri) {
+    return uri.path.contains('/releases/download/');
+  }
+
+  bool _isSupportedPackage(Uri uri) {
+    final name = _fileNameFromUrl(uri).toLowerCase();
+    if (Platform.isAndroid) {
+      return name.endsWith('.apk');
+    }
+    if (Platform.isWindows) {
+      return name.endsWith('.exe') ||
+          name.endsWith('.msix') ||
+          name.endsWith('.msi') ||
+          name.endsWith('.zip');
+    }
+    if (Platform.isLinux) {
+      return name.endsWith('.appimage') ||
+          name.endsWith('.deb') ||
+          name.endsWith('.rpm') ||
+          name.endsWith('.tar.gz') ||
+          name.endsWith('.zip');
+    }
+    if (Platform.isMacOS) {
+      return name.endsWith('.dmg') ||
+          name.endsWith('.pkg') ||
+          name.endsWith('.zip');
+    }
+    return false;
+  }
+
+  List<Uri> _extractLinks(String html) {
+    final matches = RegExp(
+      r'''https?://[^\s"'<>]+|href=["']([^"']+)["']''',
+      caseSensitive: false,
+    ).allMatches(html);
+    return matches
+        .map((m) => m.group(1) ?? m.group(0))
+        .whereType<String>()
+        .map(_absoluteUriOrNull)
+        .whereType<Uri>()
+        .toList();
+  }
+
+  Uri? _absoluteUriOrNull(String value) {
+    final cleaned = _decodeHtmlEntities(value.trim());
+    final parsed = Uri.tryParse(cleaned);
+    if (parsed == null) return null;
+    if (parsed.hasScheme) return parsed;
+    return releasesPageUrl.resolveUri(parsed);
+  }
+
+  String? _elementText(XmlElement element, String name) {
+    for (final child in element.children.whereType<XmlElement>()) {
+      if (child.name.qualified == name || child.name.local == name) {
+        return child.innerText.trim();
+      }
+    }
+    return null;
+  }
+
+  String? _versionFromText(String text) {
+    final match = RegExp(
+      r'v?(\d+\.\d+\.\d+(?:[+\-][0-9A-Za-z.\-]+)?)',
+    ).firstMatch(text);
+    return match?.group(1);
+  }
+
+  String? _stripHtml(String? value) {
+    if (value == null) return null;
+    final withoutTags = value.replaceAll(RegExp(r'<[^>]+>'), ' ');
+    return _decodeHtmlEntities(
+      withoutTags,
+    ).replaceAll(RegExp(r'\s+'), ' ').trim();
+  }
+
+  String _decodeHtmlEntities(String value) {
+    return value
+        .replaceAll('&nbsp;', ' ')
+        .replaceAll('&amp;', '&')
+        .replaceAll('&quot;', '"')
+        .replaceAll('&#34;', '"')
+        .replaceAll('&#39;', "'")
+        .replaceAll('&#43;', '+')
+        .replaceAll('&lt;', '<')
+        .replaceAll('&gt;', '>');
+  }
+
+  DateTime? _parseRssDate(String? value) {
+    if (value == null || value.isEmpty) return null;
+    final direct = DateTime.tryParse(value);
+    if (direct != null) return direct;
+    try {
+      return HttpDate.parse(value);
+    } catch (_) {
+      return null;
+    }
+  }
+
+  int _compareRssReleaseDesc(_RssRelease a, _RssRelease b) {
+    final version = _compareVersions(b.version, a.version);
+    if (version != 0) return version;
+
+    final left = a.publishedAt;
+    final right = b.publishedAt;
+    if (left == null && right == null) return 0;
+    if (left == null) return 1;
+    if (right == null) return -1;
+    return right.compareTo(left);
+  }
+
+  int _compareVersions(String a, String b) {
+    final left = _versionParts(a);
+    final right = _versionParts(b);
+    final length = left.length > right.length ? left.length : right.length;
+    for (var i = 0; i < length; i++) {
+      final l = i < left.length ? left[i] : 0;
+      final r = i < right.length ? right[i] : 0;
+      if (l != r) return l.compareTo(r);
+    }
+    return 0;
+  }
+
+  List<int> _versionParts(String version) {
+    final core = version.split(RegExp(r'[+\-]')).first;
+    return core
+        .split('.')
+        .map((part) => int.tryParse(part) ?? 0)
+        .toList(growable: false);
+  }
+
+  String _fileNameFromUrl(Uri uri) {
+    final segment = uri.pathSegments.isEmpty
+        ? 'app_update'
+        : uri.pathSegments.last;
+    return Uri.decodeComponent(segment);
+  }
+
+  void _setAvailableUpdate(AppUpdateInfo? update) {
+    final previous = _availableUpdate;
+    if (previous?.version == update?.version &&
+        previous?.pageUrl == update?.pageUrl) {
+      return;
+    }
+    _availableUpdate = update;
+    notifyListeners();
+  }
+
+  @visibleForTesting
+  Future<AppUpdateInfo?> debugFetchLatestRelease() => _fetchLatestRelease();
+}
+
+class _RssRelease {
+  final String version;
+  final String title;
+  final String? description;
+  final Uri pageUrl;
+  final List<Uri> candidates;
+  final DateTime? publishedAt;
+
+  const _RssRelease({
+    required this.version,
+    required this.title,
+    required this.pageUrl,
+    required this.candidates,
+    this.description,
+    this.publishedAt,
+  });
+}

lib/src/rust/api/ffi.dart

@@ -0,0 +1,121 @@
+// This file is automatically generated, so please do not edit it.
+// @generated by `flutter_rust_bridge`@ 2.12.0.
+
+// ignore_for_file: invalid_use_of_internal_member, unused_import, unnecessary_import
+
+import '../frb_generated.dart';
+import 'ffi_types.dart';
+import 'package:flutter_rust_bridge/flutter_rust_bridge_for_generated.dart';
+
+// These functions are ignored because they are not marked as `pub`: `album_result_to_ffi`, `apply_log_level`, `config_from_ffi`, `config_to_ffi`, `error_to_ffi`, `get_engine`, `status_to_ffi`, `summary_to_ffi`, `task_item_to_ffi`, `task_to_ffi`
+
+/// 初始化同步引擎
+Future<void> initSyncEngine({required SyncConfigFfi config}) =>
+    RustSyncApi.instance.api.crateApiFfiInitSyncEngine(config: config);
+
+/// 销毁同步引擎
+Future<void> disposeSyncEngine() =>
+    RustSyncApi.instance.api.crateApiFfiDisposeSyncEngine();
+
+/// 进程退出前同步清理（WCF 模式下必须调用，确保占位符释放）
+/// 此函数是同步的，不依赖 tokio runtime，可安全在 exit(0) 前调用
+Future<void> syncShutdown() =>
+    RustSyncApi.instance.api.crateApiFfiSyncShutdown();
+
+/// 执行初始全量同步
+Future<SyncSummaryFfi> startInitialSync() =>
+    RustSyncApi.instance.api.crateApiFfiStartInitialSync();
+
+/// 启动持续同步（后台运行，立即返回）
+Future<void> startContinuousSync() =>
+    RustSyncApi.instance.api.crateApiFfiStartContinuousSync();
+
+/// 停止同步
+Future<void> stopSync() => RustSyncApi.instance.api.crateApiFfiStopSync();
+
+/// 暂停同步
+Future<void> pauseSync() => RustSyncApi.instance.api.crateApiFfiPauseSync();
+
+/// 恢复同步
+Future<void> resumeSync() => RustSyncApi.instance.api.crateApiFfiResumeSync();
+
+/// 强制同步（重新扫描全量差异）
+Future<SyncSummaryFfi> forceSync() =>
+    RustSyncApi.instance.api.crateApiFfiForceSync();
+
+/// 重置同步：停止任务 → 清空 DB → (可选)清空本地目录 → 回到初始状态
+Future<void> resetSync({required bool deleteLocalFiles}) => RustSyncApi
+    .instance
+    .api
+    .crateApiFfiResetSync(deleteLocalFiles: deleteLocalFiles);
+
+/// 获取同步状态快照
+Future<SyncStatusFfi> getSyncStatus() =>
+    RustSyncApi.instance.api.crateApiFfiGetSyncStatus();
+
+/// 获取活跃 Worker 数量
+Future<int> getActiveWorkerCount() =>
+    RustSyncApi.instance.api.crateApiFfiGetActiveWorkerCount();
+
+/// 获取同步配置
+Future<SyncConfigFfi> getSyncConfig() =>
+    RustSyncApi.instance.api.crateApiFfiGetSyncConfig();
+
+/// 更新同步配置
+Future<void> updateSyncConfig({required SyncConfigFfi config}) =>
+    RustSyncApi.instance.api.crateApiFfiUpdateSyncConfig(config: config);
+
+/// Dart 推送新 Token 给 Rust
+Future<void> updateTokens({required String accessToken}) =>
+    RustSyncApi.instance.api.crateApiFfiUpdateTokens(accessToken: accessToken);
+
+/// 水合文件（Windows 按需下载）
+Future<void> hydrateFile({required String localPath}) =>
+    RustSyncApi.instance.api.crateApiFfiHydrateFile(localPath: localPath);
+
+/// 同步相册到云端
+Future<void> syncAlbumToCloud({
+  required List<String> albumPaths,
+  required String remoteDcimUri,
+}) => RustSyncApi.instance.api.crateApiFfiSyncAlbumToCloud(
+  albumPaths: albumPaths,
+  remoteDcimUri: remoteDcimUri,
+);
+
+/// 检查云端是否存在 DCIM/Pictures 目录
+Future<CloudAlbumCheckResultFfi> checkCloudAlbumDirs({
+  required String baseUri,
+}) => RustSyncApi.instance.api.crateApiFfiCheckCloudAlbumDirs(baseUri: baseUri);
+
+/// 在云端创建 DCIM/Pictures 目录
+Future<void> createCloudAlbumDirs({required String baseUri}) =>
+    RustSyncApi.instance.api.crateApiFfiCreateCloudAlbumDirs(baseUri: baseUri);
+
+/// 注册 Rust→Dart 事件推送通道
+Stream<SyncEventFfi> registerSyncEventSink() =>
+    RustSyncApi.instance.api.crateApiFfiRegisterSyncEventSink();
+
+/// 运行时热修改日志级别（立即生效，无需重启）
+Future<void> setSyncLogLevel({required String level}) =>
+    RustSyncApi.instance.api.crateApiFfiSetSyncLogLevel(level: level);
+
+/// 获取活跃的同步任务列表
+Future<List<SyncTaskFfi>> getActiveTasks() =>
+    RustSyncApi.instance.api.crateApiFfiGetActiveTasks();
+
+/// 获取最近同步任务列表
+Future<List<SyncTaskFfi>> getRecentTasks({required int limit}) =>
+    RustSyncApi.instance.api.crateApiFfiGetRecentTasks(limit: limit);
+
+/// 获取任务详情（任务项列表）
+Future<List<SyncTaskItemFfi>> getTaskDetail({required String taskId}) =>
+    RustSyncApi.instance.api.crateApiFfiGetTaskDetail(taskId: taskId);
+
+/// 多维度查询任务项
+Future<List<SyncTaskItemFfi>> queryTaskItems({
+  required TaskItemFilterFfi filter,
+}) => RustSyncApi.instance.api.crateApiFfiQueryTaskItems(filter: filter);
+
+/// 获取累积统计（从 DB 聚合，跨所有同步任务）
+Future<SyncCumStatsFfi> getSyncCumStats() =>
+    RustSyncApi.instance.api.crateApiFfiGetSyncCumStats();

lib/src/rust/api/ffi_types.dart

@@ -0,0 +1,510 @@
+// This file is automatically generated, so please do not edit it.
+// @generated by `flutter_rust_bridge`@ 2.12.0.
+
+// ignore_for_file: invalid_use_of_internal_member, unused_import, unnecessary_import
+
+import '../frb_generated.dart';
+import 'package:flutter_rust_bridge/flutter_rust_bridge_for_generated.dart';
+import 'package:freezed_annotation/freezed_annotation.dart' hide protected;
+part 'ffi_types.freezed.dart';
+
+// These function are ignored because they are on traits that is not defined in current crate (put an empty `#[frb]` on it to unignore): `clone`, `clone`, `clone`, `clone`, `clone`, `clone`, `clone`, `clone`, `clone`, `clone`, `fmt`, `fmt`, `fmt`, `fmt`, `fmt`, `fmt`, `fmt`, `fmt`, `fmt`, `fmt`
+
+/// Android: 云端相册目录检查结果
+class CloudAlbumCheckResultFfi {
+  final bool dcimExists;
+  final bool picturesExists;
+  final String? dcimUri;
+  final String? picturesUri;
+  final bool cameraExists;
+  final String? cameraUri;
+
+  const CloudAlbumCheckResultFfi({
+    required this.dcimExists,
+    required this.picturesExists,
+    this.dcimUri,
+    this.picturesUri,
+    required this.cameraExists,
+    this.cameraUri,
+  });
+
+  @override
+  int get hashCode =>
+      dcimExists.hashCode ^
+      picturesExists.hashCode ^
+      dcimUri.hashCode ^
+      picturesUri.hashCode ^
+      cameraExists.hashCode ^
+      cameraUri.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is CloudAlbumCheckResultFfi &&
+          runtimeType == other.runtimeType &&
+          dcimExists == other.dcimExists &&
+          picturesExists == other.picturesExists &&
+          dcimUri == other.dcimUri &&
+          picturesUri == other.picturesUri &&
+          cameraExists == other.cameraExists &&
+          cameraUri == other.cameraUri;
+}
+
+/// 同步配置
+class SyncConfigFfi {
+  final String baseUrl;
+  final String accessToken;
+  final String refreshToken;
+  final String localRoot;
+  final String remoteRoot;
+  final String syncMode;
+  final String conflictStrategy;
+  final String wcfDeleteMode;
+  final int maxConcurrentTransfers;
+  final BigInt bandwidthLimitKbps;
+  final List<String> excludedPaths;
+  final int maxWorkers;
+  final String dataDir;
+  final String clientId;
+  final String logLevel;
+
+  const SyncConfigFfi({
+    required this.baseUrl,
+    required this.accessToken,
+    required this.refreshToken,
+    required this.localRoot,
+    required this.remoteRoot,
+    required this.syncMode,
+    required this.conflictStrategy,
+    required this.wcfDeleteMode,
+    required this.maxConcurrentTransfers,
+    required this.bandwidthLimitKbps,
+    required this.excludedPaths,
+    required this.maxWorkers,
+    required this.dataDir,
+    required this.clientId,
+    required this.logLevel,
+  });
+
+  @override
+  int get hashCode =>
+      baseUrl.hashCode ^
+      accessToken.hashCode ^
+      refreshToken.hashCode ^
+      localRoot.hashCode ^
+      remoteRoot.hashCode ^
+      syncMode.hashCode ^
+      conflictStrategy.hashCode ^
+      wcfDeleteMode.hashCode ^
+      maxConcurrentTransfers.hashCode ^
+      bandwidthLimitKbps.hashCode ^
+      excludedPaths.hashCode ^
+      maxWorkers.hashCode ^
+      dataDir.hashCode ^
+      clientId.hashCode ^
+      logLevel.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is SyncConfigFfi &&
+          runtimeType == other.runtimeType &&
+          baseUrl == other.baseUrl &&
+          accessToken == other.accessToken &&
+          refreshToken == other.refreshToken &&
+          localRoot == other.localRoot &&
+          remoteRoot == other.remoteRoot &&
+          syncMode == other.syncMode &&
+          conflictStrategy == other.conflictStrategy &&
+          wcfDeleteMode == other.wcfDeleteMode &&
+          maxConcurrentTransfers == other.maxConcurrentTransfers &&
+          bandwidthLimitKbps == other.bandwidthLimitKbps &&
+          excludedPaths == other.excludedPaths &&
+          maxWorkers == other.maxWorkers &&
+          dataDir == other.dataDir &&
+          clientId == other.clientId &&
+          logLevel == other.logLevel;
+}
+
+/// 累积统计（FFI）
+class SyncCumStatsFfi {
+  final int uploaded;
+  final int downloaded;
+  final int renamed;
+  final int moved;
+  final int failed;
+  final int conflicts;
+  final int deletedLocal;
+  final int deletedRemote;
+  final int skipped;
+
+  const SyncCumStatsFfi({
+    required this.uploaded,
+    required this.downloaded,
+    required this.renamed,
+    required this.moved,
+    required this.failed,
+    required this.conflicts,
+    required this.deletedLocal,
+    required this.deletedRemote,
+    required this.skipped,
+  });
+
+  @override
+  int get hashCode =>
+      uploaded.hashCode ^
+      downloaded.hashCode ^
+      renamed.hashCode ^
+      moved.hashCode ^
+      failed.hashCode ^
+      conflicts.hashCode ^
+      deletedLocal.hashCode ^
+      deletedRemote.hashCode ^
+      skipped.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is SyncCumStatsFfi &&
+          runtimeType == other.runtimeType &&
+          uploaded == other.uploaded &&
+          downloaded == other.downloaded &&
+          renamed == other.renamed &&
+          moved == other.moved &&
+          failed == other.failed &&
+          conflicts == other.conflicts &&
+          deletedLocal == other.deletedLocal &&
+          deletedRemote == other.deletedRemote &&
+          skipped == other.skipped;
+}
+
+@freezed
+sealed class SyncErrorFfi with _$SyncErrorFfi implements FrbException {
+  const SyncErrorFfi._();
+
+  const factory SyncErrorFfi.notInitialized() = SyncErrorFfi_NotInitialized;
+  const factory SyncErrorFfi.networkError({required String message}) =
+      SyncErrorFfi_NetworkError;
+  const factory SyncErrorFfi.diskFull({
+    required BigInt needed,
+    required BigInt available,
+  }) = SyncErrorFfi_DiskFull;
+  const factory SyncErrorFfi.authError({required String message}) =
+      SyncErrorFfi_AuthError;
+  const factory SyncErrorFfi.conflictError({required int count}) =
+      SyncErrorFfi_ConflictError;
+  const factory SyncErrorFfi.internalError({required String message}) =
+      SyncErrorFfi_InternalError;
+}
+
+@freezed
+sealed class SyncEventFfi with _$SyncEventFfi {
+  const SyncEventFfi._();
+
+  const factory SyncEventFfi.stateChanged({required String newState}) =
+      SyncEventFfi_StateChanged;
+  const factory SyncEventFfi.progress({
+    required BigInt synced,
+    required BigInt total,
+    required String currentFile,
+  }) = SyncEventFfi_Progress;
+  const factory SyncEventFfi.fileUploaded({
+    required String localPath,
+    required String remoteUri,
+  }) = SyncEventFfi_FileUploaded;
+  const factory SyncEventFfi.fileDownloaded({
+    required String localPath,
+    required String remoteUri,
+  }) = SyncEventFfi_FileDownloaded;
+  const factory SyncEventFfi.conflictDetected({
+    required String localPath,
+    required String conflictType,
+  }) = SyncEventFfi_ConflictDetected;
+  const factory SyncEventFfi.error({
+    required String message,
+    required bool recoverable,
+  }) = SyncEventFfi_Error;
+  const factory SyncEventFfi.tokenExpired() = SyncEventFfi_TokenExpired;
+  const factory SyncEventFfi.diskSpaceWarning({required BigInt availableMb}) =
+      SyncEventFfi_DiskSpaceWarning;
+  const factory SyncEventFfi.initialSyncComplete({
+    required SyncSummaryFfi summary,
+  }) = SyncEventFfi_InitialSyncComplete;
+  const factory SyncEventFfi.workerStarted({
+    required String taskId,
+    required String trigger,
+    required int uploadCount,
+    required int downloadCount,
+  }) = SyncEventFfi_WorkerStarted;
+  const factory SyncEventFfi.workerCompleted({
+    required String taskId,
+    required int uploaded,
+    required int downloaded,
+    required int renamed,
+    required int moved,
+    required int failed,
+    required BigInt durationMs,
+  }) = SyncEventFfi_WorkerCompleted;
+  const factory SyncEventFfi.workerFailed({
+    required String taskId,
+    required String message,
+  }) = SyncEventFfi_WorkerFailed;
+  const factory SyncEventFfi.taskItemUpdated({
+    required String taskId,
+    required String relativePath,
+    required String action,
+    required String status,
+  }) = SyncEventFfi_TaskItemUpdated;
+}
+
+/// 同步状态快照
+class SyncStatusFfi {
+  final String state;
+  final BigInt syncedFiles;
+  final BigInt totalFiles;
+  final int uploadingCount;
+  final int downloadingCount;
+  final int conflictCount;
+  final int errorCount;
+  final String? lastSyncTime;
+  final String? errorMessage;
+
+  const SyncStatusFfi({
+    required this.state,
+    required this.syncedFiles,
+    required this.totalFiles,
+    required this.uploadingCount,
+    required this.downloadingCount,
+    required this.conflictCount,
+    required this.errorCount,
+    this.lastSyncTime,
+    this.errorMessage,
+  });
+
+  @override
+  int get hashCode =>
+      state.hashCode ^
+      syncedFiles.hashCode ^
+      totalFiles.hashCode ^
+      uploadingCount.hashCode ^
+      downloadingCount.hashCode ^
+      conflictCount.hashCode ^
+      errorCount.hashCode ^
+      lastSyncTime.hashCode ^
+      errorMessage.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is SyncStatusFfi &&
+          runtimeType == other.runtimeType &&
+          state == other.state &&
+          syncedFiles == other.syncedFiles &&
+          totalFiles == other.totalFiles &&
+          uploadingCount == other.uploadingCount &&
+          downloadingCount == other.downloadingCount &&
+          conflictCount == other.conflictCount &&
+          errorCount == other.errorCount &&
+          lastSyncTime == other.lastSyncTime &&
+          errorMessage == other.errorMessage;
+}
+
+/// 初始同步摘要
+class SyncSummaryFfi {
+  final int uploaded;
+  final int downloaded;
+  final int renamed;
+  final int moved;
+  final int conflicts;
+  final int failed;
+  final int skipped;
+  final int deletedLocal;
+  final int deletedRemote;
+  final BigInt durationMs;
+
+  const SyncSummaryFfi({
+    required this.uploaded,
+    required this.downloaded,
+    required this.renamed,
+    required this.moved,
+    required this.conflicts,
+    required this.failed,
+    required this.skipped,
+    required this.deletedLocal,
+    required this.deletedRemote,
+    required this.durationMs,
+  });
+
+  @override
+  int get hashCode =>
+      uploaded.hashCode ^
+      downloaded.hashCode ^
+      renamed.hashCode ^
+      moved.hashCode ^
+      conflicts.hashCode ^
+      failed.hashCode ^
+      skipped.hashCode ^
+      deletedLocal.hashCode ^
+      deletedRemote.hashCode ^
+      durationMs.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is SyncSummaryFfi &&
+          runtimeType == other.runtimeType &&
+          uploaded == other.uploaded &&
+          downloaded == other.downloaded &&
+          renamed == other.renamed &&
+          moved == other.moved &&
+          conflicts == other.conflicts &&
+          failed == other.failed &&
+          skipped == other.skipped &&
+          deletedLocal == other.deletedLocal &&
+          deletedRemote == other.deletedRemote &&
+          durationMs == other.durationMs;
+}
+
+/// 同步任务摘要（FFI）
+class SyncTaskFfi {
+  final String id;
+  final String trigger;
+  final int totalCount;
+  final int completedCount;
+  final int failedCount;
+  final String status;
+  final String createdAt;
+  final String updatedAt;
+  final String? finishedAt;
+
+  const SyncTaskFfi({
+    required this.id,
+    required this.trigger,
+    required this.totalCount,
+    required this.completedCount,
+    required this.failedCount,
+    required this.status,
+    required this.createdAt,
+    required this.updatedAt,
+    this.finishedAt,
+  });
+
+  @override
+  int get hashCode =>
+      id.hashCode ^
+      trigger.hashCode ^
+      totalCount.hashCode ^
+      completedCount.hashCode ^
+      failedCount.hashCode ^
+      status.hashCode ^
+      createdAt.hashCode ^
+      updatedAt.hashCode ^
+      finishedAt.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is SyncTaskFfi &&
+          runtimeType == other.runtimeType &&
+          id == other.id &&
+          trigger == other.trigger &&
+          totalCount == other.totalCount &&
+          completedCount == other.completedCount &&
+          failedCount == other.failedCount &&
+          status == other.status &&
+          createdAt == other.createdAt &&
+          updatedAt == other.updatedAt &&
+          finishedAt == other.finishedAt;
+}
+
+/// 同步任务项（FFI）
+class SyncTaskItemFfi {
+  final PlatformInt64 id;
+  final String taskId;
+  final String relativePath;
+  final String actionType;
+  final String status;
+  final BigInt fileSize;
+  final String? errorMessage;
+  final String createdAt;
+  final String updatedAt;
+
+  const SyncTaskItemFfi({
+    required this.id,
+    required this.taskId,
+    required this.relativePath,
+    required this.actionType,
+    required this.status,
+    required this.fileSize,
+    this.errorMessage,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  @override
+  int get hashCode =>
+      id.hashCode ^
+      taskId.hashCode ^
+      relativePath.hashCode ^
+      actionType.hashCode ^
+      status.hashCode ^
+      fileSize.hashCode ^
+      errorMessage.hashCode ^
+      createdAt.hashCode ^
+      updatedAt.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is SyncTaskItemFfi &&
+          runtimeType == other.runtimeType &&
+          id == other.id &&
+          taskId == other.taskId &&
+          relativePath == other.relativePath &&
+          actionType == other.actionType &&
+          status == other.status &&
+          fileSize == other.fileSize &&
+          errorMessage == other.errorMessage &&
+          createdAt == other.createdAt &&
+          updatedAt == other.updatedAt;
+}
+
+/// 任务项查询过滤器（FFI）
+class TaskItemFilterFfi {
+  final String? taskId;
+  final String? relativePathContains;
+  final String? actionType;
+  final String? status;
+  final int limit;
+  final int offset;
+
+  const TaskItemFilterFfi({
+    this.taskId,
+    this.relativePathContains,
+    this.actionType,
+    this.status,
+    required this.limit,
+    required this.offset,
+  });
+
+  @override
+  int get hashCode =>
+      taskId.hashCode ^
+      relativePathContains.hashCode ^
+      actionType.hashCode ^
+      status.hashCode ^
+      limit.hashCode ^
+      offset.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is TaskItemFilterFfi &&
+          runtimeType == other.runtimeType &&
+          taskId == other.taskId &&
+          relativePathContains == other.relativePathContains &&
+          actionType == other.actionType &&
+          status == other.status &&
+          limit == other.limit &&
+          offset == other.offset;
+}

lib/src/rust/frb_generated.io.dart

@@ -0,0 +1,340 @@
+// This file is automatically generated, so please do not edit it.
+// @generated by `flutter_rust_bridge`@ 2.12.0.
+
+// ignore_for_file: unused_import, unused_element, unnecessary_import, duplicate_ignore, invalid_use_of_internal_member, annotate_overrides, non_constant_identifier_names, curly_braces_in_flow_control_structures, prefer_const_literals_to_create_immutables, unused_field
+
+import 'api/ffi.dart';
+import 'api/ffi_types.dart';
+import 'dart:async';
+import 'dart:convert';
+import 'dart:ffi' as ffi;
+import 'frb_generated.dart';
+import 'package:flutter_rust_bridge/flutter_rust_bridge_for_generated_io.dart';
+
+abstract class RustSyncApiApiImplPlatform extends BaseApiImpl<RustSyncApiWire> {
+  RustSyncApiApiImplPlatform({
+    required super.handler,
+    required super.wire,
+    required super.generalizedFrbRustBinding,
+    required super.portManager,
+  });
+
+  @protected
+  AnyhowException dco_decode_AnyhowException(dynamic raw);
+
+  @protected
+  RustStreamSink<SyncEventFfi> dco_decode_StreamSink_sync_event_ffi_Sse(
+    dynamic raw,
+  );
+
+  @protected
+  String dco_decode_String(dynamic raw);
+
+  @protected
+  bool dco_decode_bool(dynamic raw);
+
+  @protected
+  SyncConfigFfi dco_decode_box_autoadd_sync_config_ffi(dynamic raw);
+
+  @protected
+  SyncSummaryFfi dco_decode_box_autoadd_sync_summary_ffi(dynamic raw);
+
+  @protected
+  TaskItemFilterFfi dco_decode_box_autoadd_task_item_filter_ffi(dynamic raw);
+
+  @protected
+  CloudAlbumCheckResultFfi dco_decode_cloud_album_check_result_ffi(dynamic raw);
+
+  @protected
+  PlatformInt64 dco_decode_i_64(dynamic raw);
+
+  @protected
+  List<String> dco_decode_list_String(dynamic raw);
+
+  @protected
+  Uint8List dco_decode_list_prim_u_8_strict(dynamic raw);
+
+  @protected
+  List<SyncTaskFfi> dco_decode_list_sync_task_ffi(dynamic raw);
+
+  @protected
+  List<SyncTaskItemFfi> dco_decode_list_sync_task_item_ffi(dynamic raw);
+
+  @protected
+  String? dco_decode_opt_String(dynamic raw);
+
+  @protected
+  SyncConfigFfi dco_decode_sync_config_ffi(dynamic raw);
+
+  @protected
+  SyncCumStatsFfi dco_decode_sync_cum_stats_ffi(dynamic raw);
+
+  @protected
+  SyncErrorFfi dco_decode_sync_error_ffi(dynamic raw);
+
+  @protected
+  SyncEventFfi dco_decode_sync_event_ffi(dynamic raw);
+
+  @protected
+  SyncStatusFfi dco_decode_sync_status_ffi(dynamic raw);
+
+  @protected
+  SyncSummaryFfi dco_decode_sync_summary_ffi(dynamic raw);
+
+  @protected
+  SyncTaskFfi dco_decode_sync_task_ffi(dynamic raw);
+
+  @protected
+  SyncTaskItemFfi dco_decode_sync_task_item_ffi(dynamic raw);
+
+  @protected
+  TaskItemFilterFfi dco_decode_task_item_filter_ffi(dynamic raw);
+
+  @protected
+  int dco_decode_u_32(dynamic raw);
+
+  @protected
+  BigInt dco_decode_u_64(dynamic raw);
+
+  @protected
+  int dco_decode_u_8(dynamic raw);
+
+  @protected
+  void dco_decode_unit(dynamic raw);
+
+  @protected
+  AnyhowException sse_decode_AnyhowException(SseDeserializer deserializer);
+
+  @protected
+  RustStreamSink<SyncEventFfi> sse_decode_StreamSink_sync_event_ffi_Sse(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  String sse_decode_String(SseDeserializer deserializer);
+
+  @protected
+  bool sse_decode_bool(SseDeserializer deserializer);
+
+  @protected
+  SyncConfigFfi sse_decode_box_autoadd_sync_config_ffi(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  SyncSummaryFfi sse_decode_box_autoadd_sync_summary_ffi(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  TaskItemFilterFfi sse_decode_box_autoadd_task_item_filter_ffi(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  CloudAlbumCheckResultFfi sse_decode_cloud_album_check_result_ffi(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  PlatformInt64 sse_decode_i_64(SseDeserializer deserializer);
+
+  @protected
+  List<String> sse_decode_list_String(SseDeserializer deserializer);
+
+  @protected
+  Uint8List sse_decode_list_prim_u_8_strict(SseDeserializer deserializer);
+
+  @protected
+  List<SyncTaskFfi> sse_decode_list_sync_task_ffi(SseDeserializer deserializer);
+
+  @protected
+  List<SyncTaskItemFfi> sse_decode_list_sync_task_item_ffi(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  String? sse_decode_opt_String(SseDeserializer deserializer);
+
+  @protected
+  SyncConfigFfi sse_decode_sync_config_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncCumStatsFfi sse_decode_sync_cum_stats_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncErrorFfi sse_decode_sync_error_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncEventFfi sse_decode_sync_event_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncStatusFfi sse_decode_sync_status_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncSummaryFfi sse_decode_sync_summary_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncTaskFfi sse_decode_sync_task_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncTaskItemFfi sse_decode_sync_task_item_ffi(SseDeserializer deserializer);
+
+  @protected
+  TaskItemFilterFfi sse_decode_task_item_filter_ffi(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  int sse_decode_u_32(SseDeserializer deserializer);
+
+  @protected
+  BigInt sse_decode_u_64(SseDeserializer deserializer);
+
+  @protected
+  int sse_decode_u_8(SseDeserializer deserializer);
+
+  @protected
+  void sse_decode_unit(SseDeserializer deserializer);
+
+  @protected
+  int sse_decode_i_32(SseDeserializer deserializer);
+
+  @protected
+  void sse_encode_AnyhowException(
+    AnyhowException self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_StreamSink_sync_event_ffi_Sse(
+    RustStreamSink<SyncEventFfi> self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_String(String self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_bool(bool self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_box_autoadd_sync_config_ffi(
+    SyncConfigFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_box_autoadd_sync_summary_ffi(
+    SyncSummaryFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_box_autoadd_task_item_filter_ffi(
+    TaskItemFilterFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_cloud_album_check_result_ffi(
+    CloudAlbumCheckResultFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_i_64(PlatformInt64 self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_list_String(List<String> self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_list_prim_u_8_strict(
+    Uint8List self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_list_sync_task_ffi(
+    List<SyncTaskFfi> self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_list_sync_task_item_ffi(
+    List<SyncTaskItemFfi> self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_opt_String(String? self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_sync_config_ffi(SyncConfigFfi self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_sync_cum_stats_ffi(
+    SyncCumStatsFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_sync_error_ffi(SyncErrorFfi self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_sync_event_ffi(SyncEventFfi self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_sync_status_ffi(SyncStatusFfi self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_sync_summary_ffi(
+    SyncSummaryFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_sync_task_ffi(SyncTaskFfi self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_sync_task_item_ffi(
+    SyncTaskItemFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_task_item_filter_ffi(
+    TaskItemFilterFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_u_32(int self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_u_64(BigInt self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_u_8(int self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_unit(void self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_i_32(int self, SseSerializer serializer);
+}
+
+// Section: wire_class
+
+class RustSyncApiWire implements BaseWire {
+  factory RustSyncApiWire.fromExternalLibrary(ExternalLibrary lib) =>
+      RustSyncApiWire(lib.ffiDynamicLibrary);
+
+  /// Holds the symbol lookup function.
+  final ffi.Pointer<T> Function<T extends ffi.NativeType>(String symbolName)
+  _lookup;
+
+  /// The symbols are looked up in [dynamicLibrary].
+  RustSyncApiWire(ffi.DynamicLibrary dynamicLibrary)
+    : _lookup = dynamicLibrary.lookup;
+}

lib/src/rust/frb_generated.web.dart

@@ -0,0 +1,340 @@
+// This file is automatically generated, so please do not edit it.
+// @generated by `flutter_rust_bridge`@ 2.12.0.
+
+// ignore_for_file: unused_import, unused_element, unnecessary_import, duplicate_ignore, invalid_use_of_internal_member, annotate_overrides, non_constant_identifier_names, curly_braces_in_flow_control_structures, prefer_const_literals_to_create_immutables, unused_field
+
+// Static analysis wrongly picks the IO variant, thus ignore this
+// ignore_for_file: argument_type_not_assignable
+
+import 'api/ffi.dart';
+import 'api/ffi_types.dart';
+import 'dart:async';
+import 'dart:convert';
+import 'frb_generated.dart';
+import 'package:flutter_rust_bridge/flutter_rust_bridge_for_generated_web.dart';
+
+abstract class RustSyncApiApiImplPlatform extends BaseApiImpl<RustSyncApiWire> {
+  RustSyncApiApiImplPlatform({
+    required super.handler,
+    required super.wire,
+    required super.generalizedFrbRustBinding,
+    required super.portManager,
+  });
+
+  @protected
+  AnyhowException dco_decode_AnyhowException(dynamic raw);
+
+  @protected
+  RustStreamSink<SyncEventFfi> dco_decode_StreamSink_sync_event_ffi_Sse(
+    dynamic raw,
+  );
+
+  @protected
+  String dco_decode_String(dynamic raw);
+
+  @protected
+  bool dco_decode_bool(dynamic raw);
+
+  @protected
+  SyncConfigFfi dco_decode_box_autoadd_sync_config_ffi(dynamic raw);
+
+  @protected
+  SyncSummaryFfi dco_decode_box_autoadd_sync_summary_ffi(dynamic raw);
+
+  @protected
+  TaskItemFilterFfi dco_decode_box_autoadd_task_item_filter_ffi(dynamic raw);
+
+  @protected
+  CloudAlbumCheckResultFfi dco_decode_cloud_album_check_result_ffi(dynamic raw);
+
+  @protected
+  PlatformInt64 dco_decode_i_64(dynamic raw);
+
+  @protected
+  List<String> dco_decode_list_String(dynamic raw);
+
+  @protected
+  Uint8List dco_decode_list_prim_u_8_strict(dynamic raw);
+
+  @protected
+  List<SyncTaskFfi> dco_decode_list_sync_task_ffi(dynamic raw);
+
+  @protected
+  List<SyncTaskItemFfi> dco_decode_list_sync_task_item_ffi(dynamic raw);
+
+  @protected
+  String? dco_decode_opt_String(dynamic raw);
+
+  @protected
+  SyncConfigFfi dco_decode_sync_config_ffi(dynamic raw);
+
+  @protected
+  SyncCumStatsFfi dco_decode_sync_cum_stats_ffi(dynamic raw);
+
+  @protected
+  SyncErrorFfi dco_decode_sync_error_ffi(dynamic raw);
+
+  @protected
+  SyncEventFfi dco_decode_sync_event_ffi(dynamic raw);
+
+  @protected
+  SyncStatusFfi dco_decode_sync_status_ffi(dynamic raw);
+
+  @protected
+  SyncSummaryFfi dco_decode_sync_summary_ffi(dynamic raw);
+
+  @protected
+  SyncTaskFfi dco_decode_sync_task_ffi(dynamic raw);
+
+  @protected
+  SyncTaskItemFfi dco_decode_sync_task_item_ffi(dynamic raw);
+
+  @protected
+  TaskItemFilterFfi dco_decode_task_item_filter_ffi(dynamic raw);
+
+  @protected
+  int dco_decode_u_32(dynamic raw);
+
+  @protected
+  BigInt dco_decode_u_64(dynamic raw);
+
+  @protected
+  int dco_decode_u_8(dynamic raw);
+
+  @protected
+  void dco_decode_unit(dynamic raw);
+
+  @protected
+  AnyhowException sse_decode_AnyhowException(SseDeserializer deserializer);
+
+  @protected
+  RustStreamSink<SyncEventFfi> sse_decode_StreamSink_sync_event_ffi_Sse(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  String sse_decode_String(SseDeserializer deserializer);
+
+  @protected
+  bool sse_decode_bool(SseDeserializer deserializer);
+
+  @protected
+  SyncConfigFfi sse_decode_box_autoadd_sync_config_ffi(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  SyncSummaryFfi sse_decode_box_autoadd_sync_summary_ffi(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  TaskItemFilterFfi sse_decode_box_autoadd_task_item_filter_ffi(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  CloudAlbumCheckResultFfi sse_decode_cloud_album_check_result_ffi(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  PlatformInt64 sse_decode_i_64(SseDeserializer deserializer);
+
+  @protected
+  List<String> sse_decode_list_String(SseDeserializer deserializer);
+
+  @protected
+  Uint8List sse_decode_list_prim_u_8_strict(SseDeserializer deserializer);
+
+  @protected
+  List<SyncTaskFfi> sse_decode_list_sync_task_ffi(SseDeserializer deserializer);
+
+  @protected
+  List<SyncTaskItemFfi> sse_decode_list_sync_task_item_ffi(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  String? sse_decode_opt_String(SseDeserializer deserializer);
+
+  @protected
+  SyncConfigFfi sse_decode_sync_config_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncCumStatsFfi sse_decode_sync_cum_stats_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncErrorFfi sse_decode_sync_error_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncEventFfi sse_decode_sync_event_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncStatusFfi sse_decode_sync_status_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncSummaryFfi sse_decode_sync_summary_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncTaskFfi sse_decode_sync_task_ffi(SseDeserializer deserializer);
+
+  @protected
+  SyncTaskItemFfi sse_decode_sync_task_item_ffi(SseDeserializer deserializer);
+
+  @protected
+  TaskItemFilterFfi sse_decode_task_item_filter_ffi(
+    SseDeserializer deserializer,
+  );
+
+  @protected
+  int sse_decode_u_32(SseDeserializer deserializer);
+
+  @protected
+  BigInt sse_decode_u_64(SseDeserializer deserializer);
+
+  @protected
+  int sse_decode_u_8(SseDeserializer deserializer);
+
+  @protected
+  void sse_decode_unit(SseDeserializer deserializer);
+
+  @protected
+  int sse_decode_i_32(SseDeserializer deserializer);
+
+  @protected
+  void sse_encode_AnyhowException(
+    AnyhowException self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_StreamSink_sync_event_ffi_Sse(
+    RustStreamSink<SyncEventFfi> self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_String(String self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_bool(bool self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_box_autoadd_sync_config_ffi(
+    SyncConfigFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_box_autoadd_sync_summary_ffi(
+    SyncSummaryFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_box_autoadd_task_item_filter_ffi(
+    TaskItemFilterFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_cloud_album_check_result_ffi(
+    CloudAlbumCheckResultFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_i_64(PlatformInt64 self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_list_String(List<String> self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_list_prim_u_8_strict(
+    Uint8List self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_list_sync_task_ffi(
+    List<SyncTaskFfi> self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_list_sync_task_item_ffi(
+    List<SyncTaskItemFfi> self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_opt_String(String? self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_sync_config_ffi(SyncConfigFfi self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_sync_cum_stats_ffi(
+    SyncCumStatsFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_sync_error_ffi(SyncErrorFfi self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_sync_event_ffi(SyncEventFfi self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_sync_status_ffi(SyncStatusFfi self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_sync_summary_ffi(
+    SyncSummaryFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_sync_task_ffi(SyncTaskFfi self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_sync_task_item_ffi(
+    SyncTaskItemFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_task_item_filter_ffi(
+    TaskItemFilterFfi self,
+    SseSerializer serializer,
+  );
+
+  @protected
+  void sse_encode_u_32(int self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_u_64(BigInt self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_u_8(int self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_unit(void self, SseSerializer serializer);
+
+  @protected
+  void sse_encode_i_32(int self, SseSerializer serializer);
+}
+
+// Section: wire_class
+
+class RustSyncApiWire implements BaseWire {
+  RustSyncApiWire.fromExternalLibrary(ExternalLibrary lib);
+}
+
+@JS('wasm_bindgen')
+external RustSyncApiWasmModule get wasmModule;
+
+@JS()
+@anonymous
+extension type RustSyncApiWasmModule._(JSObject _) implements JSObject {}

linux/CMakeLists.txt

@@ -126,3 +126,37 @@ if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
   install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
     COMPONENT Runtime)
 endif()
+
+# === Rust Sync Engine ===
+find_program(CARGO_CMD cargo)
+if(NOT CARGO_CMD)
+    message(WARNING "cargo not found, skipping Rust sync engine build")
+else()
+    set(SYNC_CORE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../native")
+
+    if(CMAKE_BUILD_TYPE STREQUAL "Release" OR CMAKE_BUILD_TYPE STREQUAL "Profile")
+        set(CARGO_PROFILE "--release")
+        set(RUST_BUILD_DIR "release")
+    else()
+        set(CARGO_PROFILE "")
+        set(RUST_BUILD_DIR "debug")
+    endif()
+
+    set(RUST_TARGET_DIR "${CMAKE_BINARY_DIR}/rust_target")
+
+    add_custom_command(
+        OUTPUT "${RUST_TARGET_DIR}/${RUST_BUILD_DIR}/libsync_core.so"
+        COMMAND ${CARGO_CMD} build ${CARGO_PROFILE}
+            --manifest-path "${SYNC_CORE_DIR}/Cargo.toml"
+            --target-dir "${RUST_TARGET_DIR}"
+            --features sync-core/linux-fuse,sync-core/event_sink_enabled
+        COMMENT "Building Rust sync engine..."
+    )
+
+    add_custom_target(sync_core_build DEPENDS "${RUST_TARGET_DIR}/${RUST_BUILD_DIR}/libsync_core.so")
+    add_dependencies(${BINARY_NAME} sync_core_build)
+
+    install(FILES "${RUST_TARGET_DIR}/${RUST_BUILD_DIR}/libsync_core.so"
+        DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+        COMPONENT Runtime)
+endif()

linux/flutter/generated_plugin_registrant.cc

@@ -9,6 +9,7 @@
 #include <desktop_drop/desktop_drop_plugin.h>
 #include <file_selector_linux/file_selector_plugin.h>
 #include <flutter_acrylic/flutter_acrylic_plugin.h>
+#include <flutter_inappwebview_linux/flutter_inappwebview_linux_plugin.h>
 #include <media_kit_libs_linux/media_kit_libs_linux_plugin.h>
 #include <media_kit_video/media_kit_video_plugin.h>
 #include <open_file_linux/open_file_linux_plugin.h>
@@ -27,6 +28,9 @@ void fl_register_plugins(FlPluginRegistry* registry) {
   g_autoptr(FlPluginRegistrar) flutter_acrylic_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "FlutterAcrylicPlugin");
   flutter_acrylic_plugin_register_with_registrar(flutter_acrylic_registrar);
+  g_autoptr(FlPluginRegistrar) flutter_inappwebview_linux_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "FlutterInappwebviewLinuxPlugin");
+  flutter_inappwebview_linux_plugin_register_with_registrar(flutter_inappwebview_linux_registrar);
   g_autoptr(FlPluginRegistrar) media_kit_libs_linux_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "MediaKitLibsLinuxPlugin");
   media_kit_libs_linux_plugin_register_with_registrar(media_kit_libs_linux_registrar);

linux/flutter/generated_plugins.cmake

@@ -6,6 +6,7 @@ list(APPEND FLUTTER_PLUGIN_LIST
   desktop_drop
   file_selector_linux
   flutter_acrylic
+  flutter_inappwebview_linux
   media_kit_libs_linux
   media_kit_video
   open_file_linux

native/Cargo.toml

@@ -0,0 +1,19 @@
+[workspace]
+resolver = "2"
+members = [
+    "sync-core",
+    "sync-windows",
+    "sync-linux",
+    "sync-android",
+]
+
+[workspace.dependencies]
+tokio = { version = "1", features = ["rt-multi-thread", "macros", "sync", "time", "fs", "io-util"] }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+thiserror = "2"
+anyhow = "1"
+tracing = "0.1"
+parking_lot = "0.12"
+uuid = { version = "1", features = ["v4"] }
+chrono = { version = "0.4", features = ["serde"] }

native/frb.yaml

@@ -0,0 +1,5 @@
+rust_input: crate::api
+rust_root: sync-core/
+dart_output: ../lib/src/rust/
+dart_entrypoint_class_name: RustSyncApi
+dart_enums_style: true

native/sync-android/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "sync-android"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["lib"]
+
+[dependencies]
+# 不依赖 sync-core，避免循环依赖
+jni = { version = "0.21", features = ["invocation"] }
+thiserror = { workspace = true }
+tracing = "0.1"
+anyhow = { workspace = true }
+tokio = { workspace = true }
+async-trait = "0.1"
+
+# 通用日志接口
+log = "0.4"
+
+# 仅在 Android 平台下生效的日志后端
+[target.'cfg(target_os = "android")'.dependencies]
+android_logger = "0.15"

native/sync-android/src/lib.rs

@@ -0,0 +1,106 @@
+#![cfg(target_os = "android")]
+
+//! Android 平台适配层
+//!
+//! 提供相册同步辅助功能：
+//! - 文件类型过滤（仅图片/视频）
+//! - 路径验证
+//!
+//! 实际的扫描由 Dart 侧通过平台通道完成，
+//! 上传和状态管理由 sync-core 的 sync_album 处理
+
+use std::path::Path;
+
+/// 图片扩展名
+const IMAGE_EXTENSIONS: &[&str] = &[
+    "jpg", "jpeg", "png", "gif", "bmp", "webp", "heic", "heif", "raw", "tiff", "svg",
+];
+
+/// 视频扩展名
+const VIDEO_EXTENSIONS: &[&str] = &[
+    "mp4", "mov", "avi", "mkv", "wmv", "flv", "3gp", "webm",
+];
+
+pub struct AndroidAdapter;
+
+impl Default for AndroidAdapter {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl AndroidAdapter {
+    pub fn new() -> Self {
+        Self
+    }
+
+    /// 判断文件是否为媒体文件（图片或视频）
+    pub fn is_media_file(path: &str) -> bool {
+        let ext = Path::new(path)
+            .extension()
+            .and_then(|e| e.to_str())
+            .map(|e| e.to_lowercase())
+            .unwrap_or_default();
+
+        IMAGE_EXTENSIONS.contains(&ext.as_str()) || VIDEO_EXTENSIONS.contains(&ext.as_str())
+    }
+
+    /// 判断文件是否为图片
+    pub fn is_image_file(path: &str) -> bool {
+        let ext = Path::new(path)
+            .extension()
+            .and_then(|e| e.to_str())
+            .map(|e| e.to_lowercase())
+            .unwrap_or_default();
+
+        IMAGE_EXTENSIONS.contains(&ext.as_str())
+    }
+
+    /// 判断文件是否为视频
+    pub fn is_video_file(path: &str) -> bool {
+        let ext = Path::new(path)
+            .extension()
+            .and_then(|e| e.to_str())
+            .map(|e| e.to_lowercase())
+            .unwrap_or_default();
+
+        VIDEO_EXTENSIONS.contains(&ext.as_str())
+    }
+
+    /// 从路径列表中过滤出媒体文件
+    pub fn filter_media_files(paths: &[String]) -> Vec<String> {
+        paths.iter()
+            .filter(|p| Self::is_media_file(p))
+            .cloned()
+            .collect()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_is_media_file() {
+        assert!(AndroidAdapter::is_image_file("/sdcard/DCIM/IMG_001.jpg"));
+        assert!(AndroidAdapter::is_image_file("/sdcard/DCIM/IMG_001.JPEG"));
+        assert!(AndroidAdapter::is_video_file("/sdcard/DCIM/VID_001.mp4"));
+        assert!(!AndroidAdapter::is_media_file("/sdcard/Download/doc.pdf"));
+        assert!(AndroidAdapter::is_media_file("/sdcard/Pictures/photo.webp"));
+        assert!(AndroidAdapter::is_media_file("/sdcard/DCIM/photo.heic"));
+    }
+
+    #[test]
+    fn test_filter_media_files() {
+        let paths = vec![
+            "/sdcard/DCIM/IMG_001.jpg".to_string(),
+            "/sdcard/Download/doc.pdf".to_string(),
+            "/sdcard/DCIM/VID_001.mp4".to_string(),
+            "/sdcard/Music/song.mp3".to_string(),
+        ];
+        let filtered = AndroidAdapter::filter_media_files(&paths);
+        assert_eq!(filtered.len(), 2);
+        assert!(filtered.contains(&"/sdcard/DCIM/IMG_001.jpg".to_string()));
+        assert!(filtered.contains(&"/sdcard/DCIM/VID_001.mp4".to_string()));
+    }
+}

native/sync-core/Cargo.toml

@@ -0,0 +1,88 @@
+[package]
+name = "sync-core"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "lib"]
+
+[dependencies]
+# FRB
+flutter_rust_bridge = "=2.12.0"
+
+# 异步运行时
+tokio = { workspace = true, features = ["signal"] }
+
+# HTTP
+reqwest = { version = "0.12", features = ["json", "stream", "rustls-tls"], default-features = false }
+
+# 序列化
+serde = { workspace = true }
+serde_json = { workspace = true }
+
+# 数据库
+rusqlite = { version = "0.32", features = ["bundled"] }
+r2d2 = "0.8"
+r2d2_sqlite = "0.25"
+
+# 文件系统
+walkdir = "2"
+sha2 = "0.10"
+hex = "0.4"
+notify-debouncer-full = "0.7.0"
+
+# 错误处理
+thiserror = { workspace = true }
+anyhow = { workspace = true }
+
+# 日志
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+
+# 并发
+dashmap = "6"
+
+# 工具
+uuid = { workspace = true }
+chrono = { workspace = true }
+parking_lot = { workspace = true }
+futures = "0.3"
+futures-util = "0.3"
+bytes = "1"
+filetime = "0.2"
+async-trait = "0.1"
+url = "2"
+urlencoding = "2"
+mime_guess = "2"
+once_cell = "1"
+tokio-util = { version = "0.7", features = ["compat"] }
+
+# SSE
+# (已移除 eventsource 0.5 依赖，使用内联 SSE 解析器，避免旧版 tokio/net2 警告)
+
+# 平台依赖 (feature-gated)
+[target.'cfg(windows)'.dependencies]
+sync-windows = { path = "../sync-windows", optional = true }
+windows = { version = "0.58", optional = true }
+
+[target.'cfg(target_os = "linux")'.dependencies]
+sync-linux = { path = "../sync-linux", optional = true }
+fuser = { version = "0.15", optional = true }
+libc = { version = "0.2", optional = true }
+
+[target.'cfg(target_os = "android")'.dependencies]
+sync-android = { path = "../sync-android", optional = true }
+jni = { version = "0.21", optional = true }
+android_logger = "0.15"
+log = "0.4"
+
+[features]
+default = []
+windows-cfapi = ["sync-windows", "windows"]
+linux-notify = ["sync-linux"]
+linux-fuse = ["fuser", "libc"]
+android-media = ["sync-android", "jni"]
+event_sink_enabled = []
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(frb_expand)'] }

native/sync-core/src/api/ffi.rs

@@ -0,0 +1,848 @@
+use flutter_rust_bridge::frb;
+use std::sync::Arc;
+
+use crate::api::ffi_types::*;
+use crate::sync_engine::SyncEngine;
+
+#[cfg(target_os = "android")]
+mod android_log {
+    use std::fmt::Write;
+    use tracing::{Event, Level, Subscriber};
+    use tracing_subscriber::layer::{Context, Layer};
+    use tracing_subscriber::registry::LookupSpan;
+
+    /// Tracing Layer：将事件转发到 `log` crate → android_logger → Logcat
+    pub struct AndroidLogLayer;
+
+    impl<S> Layer<S> for AndroidLogLayer
+    where
+        S: Subscriber + for<'a> LookupSpan<'a>,
+    {
+        fn on_event(&self, event: &Event<'_>, _ctx: Context<'_, S>) {
+            let log_level = match *event.metadata().level() {
+                Level::ERROR => log::Level::Error,
+                Level::WARN => log::Level::Warn,
+                Level::INFO => log::Level::Info,
+                Level::DEBUG => log::Level::Debug,
+                Level::TRACE => log::Level::Trace,
+            };
+
+            let mut visitor = EventVisitor::default();
+            event.record(&mut visitor);
+
+            let target = event.metadata().target();
+            if visitor.message.is_empty() {
+                log::log!(log_level, "[{}] {}", target, visitor.fields.trim_end());
+            } else if visitor.fields.is_empty() {
+                log::log!(log_level, "[{}] {}", target, visitor.message);
+            } else {
+                log::log!(
+                    log_level,
+                    "[{}] {} {}",
+                    target,
+                    visitor.message,
+                    visitor.fields.trim_end()
+                );
+            }
+        }
+    }
+
+    #[derive(Default)]
+    struct EventVisitor {
+        message: String,
+        fields: String,
+    }
+
+    impl tracing::field::Visit for EventVisitor {
+        fn record_debug(&mut self, field: &tracing::field::Field, value: &dyn std::fmt::Debug) {
+            if field.name() == "message" {
+                // message 字段由 tracing::field::display() 包装，其 Debug 实际走 Display，无多余引号
+                write!(self.message, "{:?}", value).unwrap();
+            } else {
+                write!(self.fields, "{}={:?} ", field.name(), value).unwrap();
+            }
+        }
+    }
+
+    pub fn init_android_logger() {
+        android_logger::init_once(
+            android_logger::Config::default()
+                .with_max_level(log::LevelFilter::Trace)
+                .with_tag("RustSyncCore"),
+        );
+    }
+}
+
+/// 全局引擎实例
+static ENGINE: once_cell::sync::OnceCell<Arc<SyncEngine>> = once_cell::sync::OnceCell::new();
+
+/// 全局日志级别重载句柄（支持运行时热修改）
+static LOG_RELOAD_HANDLE: once_cell::sync::OnceCell<
+    tracing_subscriber::reload::Handle<tracing_subscriber::EnvFilter, tracing_subscriber::Registry>,
+> = once_cell::sync::OnceCell::new();
+
+// 内部类型 -> FFI 类型的转换函数
+
+fn error_to_ffi(e: crate::errors::SyncError) -> SyncErrorFfi {
+    match e {
+        crate::errors::SyncError::Network(msg) => SyncErrorFfi::NetworkError { message: msg },
+        crate::errors::SyncError::DiskFull { needed, available } => {
+            SyncErrorFfi::DiskFull { needed, available }
+        }
+        crate::errors::SyncError::Auth(msg) => SyncErrorFfi::AuthError { message: msg },
+        crate::errors::SyncError::Conflict { count } => SyncErrorFfi::ConflictError { count },
+        crate::errors::SyncError::NotInitialized => SyncErrorFfi::NotInitialized,
+        _ => SyncErrorFfi::InternalError {
+            message: e.to_string(),
+        },
+    }
+}
+
+fn config_from_ffi(ffi: SyncConfigFfi) -> crate::models::SyncConfig {
+    use crate::models::{ConflictStrategy, SyncMode, WcfDeleteMode};
+    use std::path::PathBuf;
+
+    let sync_mode = match ffi.sync_mode.as_str() {
+        "upload_only" => SyncMode::UploadOnly,
+        "download_only" => SyncMode::DownloadOnly,
+        "album_upload" => SyncMode::AlbumUpload,
+        "album_download" => SyncMode::AlbumDownload,
+        "mirror_wcf" => SyncMode::MirrorWcf,
+        _ => SyncMode::Full,
+    };
+
+    let conflict_strategy = match ffi.conflict_strategy.as_str() {
+        "keep_local" => ConflictStrategy::KeepLocal,
+        "keep_remote" => ConflictStrategy::KeepRemote,
+        "newest_wins" => ConflictStrategy::NewestWins,
+        "largest_wins" => ConflictStrategy::LargestWins,
+        "manual" => ConflictStrategy::Manual,
+        _ => ConflictStrategy::KeepBoth,
+    };
+
+    let wcf_delete_mode = match ffi.wcf_delete_mode.as_str() {
+        "wcf_delete_sync_remote" => WcfDeleteMode::SyncRemote,
+        _ => WcfDeleteMode::LocalOnly,
+    };
+
+    let bandwidth_limit = if ffi.bandwidth_limit_kbps > 0 {
+        Some(ffi.bandwidth_limit_kbps * 1024)
+    } else {
+        None
+    };
+
+    crate::models::SyncConfig {
+        base_url: ffi.base_url,
+        access_token: ffi.access_token,
+        refresh_token: ffi.refresh_token,
+        local_root: PathBuf::from(&ffi.local_root),
+        remote_root: ffi.remote_root,
+        sync_mode,
+        conflict_strategy,
+        wcf_delete_mode,
+        max_concurrent_transfers: ffi.max_concurrent_transfers as usize,
+        bandwidth_limit,
+        excluded_paths: ffi.excluded_paths,
+        max_workers: ffi.max_workers as usize,
+        data_dir: PathBuf::from(&ffi.data_dir),
+        client_id: ffi.client_id,
+    }
+}
+
+fn config_to_ffi(c: &crate::models::SyncConfig) -> SyncConfigFfi {
+    use crate::models::{ConflictStrategy, SyncMode, WcfDeleteMode};
+
+    let sync_mode = match c.sync_mode {
+        SyncMode::Full => "full",
+        SyncMode::UploadOnly => "upload_only",
+        SyncMode::DownloadOnly => "download_only",
+        SyncMode::AlbumUpload => "album_upload",
+        SyncMode::AlbumDownload => "album_download",
+        SyncMode::MirrorWcf => "mirror_wcf",
+    };
+
+    let conflict_strategy = match c.conflict_strategy {
+        ConflictStrategy::KeepLocal => "keep_local",
+        ConflictStrategy::KeepRemote => "keep_remote",
+        ConflictStrategy::KeepBoth => "keep_both",
+        ConflictStrategy::NewestWins => "newest_wins",
+        ConflictStrategy::LargestWins => "largest_wins",
+        ConflictStrategy::Manual => "manual",
+    };
+
+    let wcf_delete_mode = match c.wcf_delete_mode {
+        WcfDeleteMode::LocalOnly => "wcf_delete_local_only",
+        WcfDeleteMode::SyncRemote => "wcf_delete_sync_remote",
+    };
+
+    SyncConfigFfi {
+        base_url: c.base_url.clone(),
+        access_token: c.access_token.clone(),
+        refresh_token: c.refresh_token.clone(),
+        local_root: c.local_root.to_string_lossy().to_string(),
+        remote_root: c.remote_root.clone(),
+        sync_mode: sync_mode.to_string(),
+        conflict_strategy: conflict_strategy.to_string(),
+        wcf_delete_mode: wcf_delete_mode.to_string(),
+        max_concurrent_transfers: c.max_concurrent_transfers as u32,
+        bandwidth_limit_kbps: c.bandwidth_limit.map(|b| b / 1024).unwrap_or(0),
+        excluded_paths: c.excluded_paths.clone(),
+        max_workers: c.max_workers as u32,
+        data_dir: c.data_dir.to_string_lossy().to_string(),
+        client_id: c.client_id.clone(),
+        log_level: String::new(),
+    }
+}
+
+fn status_to_ffi(s: crate::models::SyncStatusSnapshot) -> SyncStatusFfi {
+    let error_msg = if let crate::models::SyncState::Error { ref message } = s.state {
+        Some(message.clone())
+    } else {
+        s.error_message
+    };
+
+    let state = match s.state {
+        crate::models::SyncState::Idle => "idle".to_string(),
+        crate::models::SyncState::Initializing => "initializing".to_string(),
+        crate::models::SyncState::InitialSync { .. } => "initialSync".to_string(),
+        crate::models::SyncState::Continuous => "continuous".to_string(),
+        crate::models::SyncState::Paused => "paused".to_string(),
+        crate::models::SyncState::Error { .. } => "error".to_string(),
+        crate::models::SyncState::Stopped => "stopped".to_string(),
+    };
+
+    SyncStatusFfi {
+        state,
+        synced_files: s.synced_files,
+        total_files: s.total_files,
+        uploading_count: s.uploading_count,
+        downloading_count: s.downloading_count,
+        conflict_count: s.conflict_count,
+        error_count: s.error_count,
+        last_sync_time: s.last_sync_time,
+        error_message: error_msg,
+    }
+}
+
+fn summary_to_ffi(s: crate::models::SyncSummary) -> SyncSummaryFfi {
+    SyncSummaryFfi {
+        uploaded: s.uploaded,
+        downloaded: s.downloaded,
+        renamed: s.renamed,
+        moved: s.moved,
+        conflicts: s.conflicts,
+        failed: s.failed,
+        skipped: s.skipped,
+        deleted_local: s.deleted_local,
+        deleted_remote: s.deleted_remote,
+        duration_ms: s.duration_ms,
+    }
+}
+
+fn album_result_to_ffi(r: crate::models::CloudAlbumCheckResult) -> CloudAlbumCheckResultFfi {
+    CloudAlbumCheckResultFfi {
+        dcim_exists: r.dcim_exists,
+        pictures_exists: r.pictures_exists,
+        dcim_uri: r.dcim_uri,
+        pictures_uri: r.pictures_uri,
+        camera_exists: r.camera_exists,
+        camera_uri: r.camera_uri,
+    }
+}
+
+/// 获取引擎引用，未初始化则返回错误
+fn get_engine() -> Result<&'static SyncEngine, SyncErrorFfi> {
+    ENGINE
+        .get()
+        .map(|arc| arc.as_ref())
+        .ok_or(SyncErrorFfi::NotInitialized)
+}
+
+/// 内部：应用日志级别到 reload handle
+fn apply_log_level(level: &str) {
+    if level.is_empty() {
+        return;
+    }
+    if let Some(handle) = LOG_RELOAD_HANDLE.get() {
+        let directive = format!("sync_core={}", level);
+        match handle.modify(|filter| {
+            *filter = tracing_subscriber::EnvFilter::new(&directive);
+        }) {
+            Ok(()) => eprintln!("[sync-core] 日志级别已切换为: {}", level),
+            Err(e) => eprintln!("[sync-core] 修改日志级别失败: {}", e),
+        }
+    }
+}
+
+// ========== 生命周期 ==========
+
+/// 初始化同步引擎
+#[frb]
+pub async fn init_sync_engine(config: SyncConfigFfi) -> Result<(), SyncErrorFfi> {
+    eprintln!("[FFI] init_sync_engine ← mode={}, conflict={}, wcf_delete={}, concurrent={}, bandwidth={}kbps, log_level={}",
+        config.sync_mode, config.conflict_strategy, config.wcf_delete_mode, config.max_concurrent_transfers,
+        config.bandwidth_limit_kbps, config.log_level);
+
+    // 确保本地同步目录存在
+    let local_root = std::path::PathBuf::from(&config.local_root);
+    if !local_root.exists() {
+        std::fs::create_dir_all(&local_root).map_err(|e| SyncErrorFfi::InternalError {
+            message: format!("无法创建同步目录: {}", e),
+        })?;
+    }
+
+    // 确保程序数据目录存在
+    let data_dir = std::path::PathBuf::from(&config.data_dir);
+    let db_dir = data_dir.join("sync_core").join("datas");
+    let log_dir = data_dir.join("sync_core").join("logs");
+    if !db_dir.exists() {
+        std::fs::create_dir_all(&db_dir).map_err(|e| SyncErrorFfi::InternalError {
+            message: format!("无法创建数据库目录: {}", e),
+        })?;
+    }
+    if !log_dir.exists() {
+        std::fs::create_dir_all(&log_dir).map_err(|e| SyncErrorFfi::InternalError {
+            message: format!("无法创建日志目录: {}", e),
+        })?;
+    }
+
+    // 初始化 tracing 日志：输出到程序数据目录的 logs 和 stderr
+    let log_path = log_dir.join("sync_log.txt");
+    eprintln!("[sync-core] 日志文件: {}", log_path.display());
+
+    let log_file = std::fs::OpenOptions::new()
+        .create(true)
+        .append(true)
+        .open(&log_path)
+        .ok();
+
+    if log_file.is_none() {
+        eprintln!("[sync-core] 警告: 无法创建日志文件 {}", log_path.display());
+    }
+
+    // Android: 初始化 Logcat 日志后端（tracing → log → android_logger → Logcat）
+    #[cfg(target_os = "android")]
+    android_log::init_android_logger();
+
+    // 尝试初始化 subscriber（仅首次有效，后续调用忽略）
+    {
+        use tracing_subscriber::layer::SubscriberExt;
+        use tracing_subscriber::util::SubscriberInitExt;
+
+        let filter = tracing_subscriber::EnvFilter::from_default_env()
+            .add_directive("sync_core=debug".parse().unwrap());
+
+        let (reload_filter, reload_handle) =
+            tracing_subscriber::reload::Layer::<_, tracing_subscriber::Registry>::new(filter);
+        LOG_RELOAD_HANDLE.set(reload_handle).ok();
+
+        let registry = tracing_subscriber::registry().with(reload_filter);
+
+        // Android: 添加 Logcat 桥接层
+        #[cfg(target_os = "android")]
+        let registry = registry.with(android_log::AndroidLogLayer);
+
+        if let Some(file) = log_file {
+            let _ = registry
+                .with(
+                    tracing_subscriber::fmt::layer()
+                        .with_writer(std::sync::Mutex::new(file))
+                        .with_ansi(false),
+                )
+                .with(tracing_subscriber::fmt::layer().with_writer(std::io::stderr))
+                .try_init();
+        } else {
+            let _ = registry
+                .with(tracing_subscriber::fmt::layer().with_writer(std::io::stderr))
+                .try_init();
+        }
+    }
+
+    // 提取配置信息用于日志（在 move 之前）
+    let log_sync_mode = config.sync_mode.clone();
+    let log_conflict_strategy = config.conflict_strategy.clone();
+    let log_max_concurrent = config.max_concurrent_transfers;
+    let log_bandwidth = config.bandwidth_limit_kbps;
+    let log_level = config.log_level.clone();
+
+    let engine = SyncEngine::new(config_from_ffi(config))
+        .await
+        .map_err(error_to_ffi)?;
+
+    ENGINE
+        .set(Arc::new(engine))
+        .map_err(|_| SyncErrorFfi::InternalError {
+            message: "引擎已初始化".to_string(),
+        })?;
+
+    tracing::info!("同步引擎初始化完成, 日志文件: {}", log_path.display());
+    tracing::info!(
+        "配置: 模式={}, 冲突策略={}, 并发={}, 带宽限制={}kbps",
+        log_sync_mode,
+        log_conflict_strategy,
+        log_max_concurrent,
+        log_bandwidth,
+    );
+    if log_bandwidth > 0 {
+        tracing::info!("仅对下载限速生效, 由于Cloudreve实现原因, 上传限速无法生效");
+    }
+
+    // 应用配置中的日志级别（热修改覆盖默认 debug）
+    apply_log_level(&log_level);
+
+    // 注册 SIGINT/SIGTERM 信号处理，确保 FUSE/WCF 等资源被优雅清理
+    #[cfg(unix)]
+    {
+        tokio::spawn(async {
+            let mut sigterm =
+                match tokio::signal::unix::signal(tokio::signal::unix::SignalKind::terminate()) {
+                    Ok(s) => s,
+                    Err(e) => {
+                        tracing::warn!("无法注册 SIGTERM 处理: {}", e);
+                        return;
+                    }
+                };
+            tokio::select! {
+                _ = tokio::signal::ctrl_c() => {
+                    tracing::info!("收到 SIGINT，开始清理...");
+                }
+                _ = sigterm.recv() => {
+                    tracing::info!("收到 SIGTERM，开始清理...");
+                }
+            }
+            sync_shutdown().ok();
+            std::process::exit(0);
+        });
+    }
+    #[cfg(not(unix))]
+    {
+        tokio::spawn(async {
+            if tokio::signal::ctrl_c().await.is_ok() {
+                tracing::info!("收到 Ctrl+C，开始清理...");
+                sync_shutdown().ok();
+                std::process::exit(0);
+            }
+        });
+    }
+
+    Ok(())
+}
+
+/// 销毁同步引擎
+#[frb]
+pub async fn dispose_sync_engine() -> Result<(), SyncErrorFfi> {
+    tracing::debug!("[FFI] dispose_sync_engine ←");
+    let engine = get_engine()?;
+    engine.stop().await.map_err(error_to_ffi)?;
+
+    #[cfg(feature = "windows-cfapi")]
+    {
+        engine.cleanup_wcf();
+    }
+
+    #[cfg(feature = "linux-fuse")]
+    {
+        engine.cleanup_fuse();
+    }
+
+    tracing::info!("同步引擎已停止");
+    Ok(())
+}
+
+/// 进程退出前同步清理（WCF/FUSE 模式下必须调用，确保占位符释放和挂载点卸载）
+/// 此函数是同步的，不依赖 tokio runtime，可安全在 exit(0) 前调用
+#[frb]
+pub fn sync_shutdown() -> Result<(), SyncErrorFfi> {
+    tracing::debug!("[FFI] sync_shutdown ←");
+    #[cfg(feature = "windows-cfapi")]
+    {
+        let engine = match ENGINE.get() {
+            Some(e) => e,
+            None => return Ok(()),
+        };
+        engine.cleanup_wcf();
+    }
+    #[cfg(feature = "linux-fuse")]
+    {
+        let engine = match ENGINE.get() {
+            Some(e) => e,
+            None => return Ok(()),
+        };
+        engine.cleanup_fuse();
+    }
+    tracing::info!("同步引擎已同步清理");
+    Ok(())
+}
+
+// ========== 同步控制 ==========
+
+/// 执行初始全量同步
+#[frb]
+pub async fn start_initial_sync() -> Result<SyncSummaryFfi, SyncErrorFfi> {
+    tracing::debug!("[FFI] start_initial_sync ←");
+    let engine = get_engine()?;
+    engine.ensure_token_fresh();
+    engine
+        .run_initial_sync()
+        .await
+        .map(|s| {
+            tracing::debug!(
+                "[FFI] start_initial_sync → uploaded={}, downloaded={}, conflicts={}, failed={}",
+                s.uploaded,
+                s.downloaded,
+                s.conflicts,
+                s.failed
+            );
+            summary_to_ffi(s)
+        })
+        .map_err(error_to_ffi)
+}
+
+/// 启动持续同步（后台运行，立即返回）
+#[frb]
+pub async fn start_continuous_sync() -> Result<(), SyncErrorFfi> {
+    tracing::debug!("[FFI] start_continuous_sync ←");
+    let engine = get_engine()?;
+    let engine = engine.clone();
+    tokio::spawn(async move {
+        if let Err(e) = engine.run_continuous().await {
+            tracing::error!("持续同步异常退出: {}", e);
+        }
+    });
+    tracing::debug!("[FFI] start_continuous_sync → spawned");
+    Ok(())
+}
+
+/// 停止同步
+#[frb]
+pub async fn stop_sync() -> Result<(), SyncErrorFfi> {
+    tracing::debug!("[FFI] stop_sync ←");
+    let engine = get_engine()?;
+    engine.stop().await.map_err(error_to_ffi)
+}
+
+/// 暂停同步
+#[frb]
+pub async fn pause_sync() -> Result<(), SyncErrorFfi> {
+    tracing::debug!("[FFI] pause_sync ←");
+    let engine = get_engine()?;
+    engine.pause().await.map_err(error_to_ffi)
+}
+
+/// 恢复同步
+#[frb]
+pub async fn resume_sync() -> Result<(), SyncErrorFfi> {
+    tracing::debug!("[FFI] resume_sync ←");
+    let engine = get_engine()?;
+    engine.resume().await.map_err(error_to_ffi)
+}
+
+/// 强制同步（重新扫描全量差异）
+#[frb]
+pub async fn force_sync() -> Result<SyncSummaryFfi, SyncErrorFfi> {
+    tracing::debug!("[FFI] force_sync ←");
+    let engine = get_engine()?;
+    engine
+        .force_sync()
+        .await
+        .map(|s| {
+            tracing::debug!(
+                "[FFI] force_sync → uploaded={}, downloaded={}, conflicts={}, failed={}",
+                s.uploaded,
+                s.downloaded,
+                s.conflicts,
+                s.failed
+            );
+            summary_to_ffi(s)
+        })
+        .map_err(error_to_ffi)
+}
+
+/// 重置同步：停止任务 → 清空 DB → (可选)清空本地目录 → 回到初始状态
+#[frb]
+pub async fn reset_sync(delete_local_files: bool) -> Result<(), SyncErrorFfi> {
+    tracing::debug!(
+        "[FFI] reset_sync ← delete_local_files={}",
+        delete_local_files
+    );
+    let engine = get_engine()?;
+    engine
+        .reset_sync(delete_local_files)
+        .await
+        .map_err(error_to_ffi)
+}
+
+// ========== 状态查询 ==========
+
+/// 获取同步状态快照
+#[frb]
+pub async fn get_sync_status() -> Result<SyncStatusFfi, SyncErrorFfi> {
+    let engine = get_engine()?;
+    let s = engine.status().await;
+    tracing::trace!(
+        "[FFI] get_sync_status → state={:?}, synced={}, total={}",
+        s.state,
+        s.synced_files,
+        s.total_files
+    );
+    Ok(status_to_ffi(s))
+}
+
+/// 获取活跃 Worker 数量
+#[frb]
+pub async fn get_active_worker_count() -> Result<u32, SyncErrorFfi> {
+    let engine = get_engine()?;
+    let count = engine.active_worker_count();
+    tracing::trace!("[FFI] get_active_worker_count → {}", count);
+    Ok(count)
+}
+
+/// 获取同步配置
+#[frb]
+pub async fn get_sync_config() -> Result<SyncConfigFfi, SyncErrorFfi> {
+    let engine = get_engine()?;
+    let c = engine.config().await;
+    tracing::trace!(
+        "[FFI] get_sync_config → mode={:?}, conflict={:?}",
+        c.sync_mode,
+        c.conflict_strategy
+    );
+    Ok(config_to_ffi(&c))
+}
+
+/// 更新同步配置
+#[frb]
+pub async fn update_sync_config(config: SyncConfigFfi) -> Result<(), SyncErrorFfi> {
+    tracing::debug!("[FFI] update_sync_config ← mode={}, conflict={}, wcf_delete={}, concurrent={}, bandwidth={}kbps",
+        config.sync_mode, config.conflict_strategy, config.wcf_delete_mode, config.max_concurrent_transfers, config.bandwidth_limit_kbps);
+    let engine = get_engine()?;
+    engine
+        .update_config(config_from_ffi(config))
+        .await
+        .map_err(error_to_ffi)
+}
+
+// ========== Token 管理 ==========
+
+/// Dart 推送新 Token 给 Rust
+#[frb]
+pub async fn update_tokens(access_token: String) -> Result<(), SyncErrorFfi> {
+    tracing::debug!("[FFI] update_tokens ← token_len={}", access_token.len());
+    let engine = get_engine()?;
+    engine.update_access_token(access_token).await;
+    Ok(())
+}
+
+// ========== Windows 专用 ==========
+
+/// 水合文件（Windows 按需下载）
+#[frb]
+pub async fn hydrate_file(local_path: String) -> Result<(), SyncErrorFfi> {
+    tracing::debug!("[FFI] hydrate_file ← path={}", local_path);
+    let engine = get_engine()?;
+    engine.hydrate_file(&local_path).await.map_err(error_to_ffi)
+}
+
+// ========== Android 专用 ==========
+
+/// 同步相册到云端
+#[frb]
+pub async fn sync_album_to_cloud(
+    album_paths: Vec<String>,
+    remote_dcim_uri: String,
+) -> Result<(), SyncErrorFfi> {
+    tracing::debug!(
+        "[FFI] sync_album_to_cloud ← paths={}, uri={}",
+        album_paths.len(),
+        remote_dcim_uri
+    );
+    let engine = get_engine()?;
+    engine
+        .sync_album(album_paths, &remote_dcim_uri)
+        .await
+        .map_err(error_to_ffi)
+}
+
+/// 检查云端是否存在 DCIM/Pictures 目录
+#[frb]
+pub async fn check_cloud_album_dirs(
+    base_uri: String,
+) -> Result<CloudAlbumCheckResultFfi, SyncErrorFfi> {
+    tracing::debug!("[FFI] check_cloud_album_dirs ← uri={}", base_uri);
+    let engine = get_engine()?;
+    engine
+        .check_album_dirs(&base_uri)
+        .await
+        .map(|r| {
+            tracing::debug!(
+                "[FFI] check_cloud_album_dirs → dcim={}, pictures={}",
+                r.dcim_exists,
+                r.pictures_exists
+            );
+            album_result_to_ffi(r)
+        })
+        .map_err(error_to_ffi)
+}
+
+/// 在云端创建 DCIM/Pictures 目录
+#[frb]
+pub async fn create_cloud_album_dirs(base_uri: String) -> Result<(), SyncErrorFfi> {
+    tracing::debug!("[FFI] create_cloud_album_dirs ← uri={}", base_uri);
+    let engine = get_engine()?;
+    engine
+        .create_album_dirs(&base_uri)
+        .await
+        .map_err(error_to_ffi)
+}
+
+// ========== 事件推送 ==========
+
+/// 注册 Rust→Dart 事件推送通道
+#[frb]
+pub fn register_sync_event_sink(
+    sink: crate::frb_generated::StreamSink<SyncEventFfi>,
+) -> Result<(), SyncErrorFfi> {
+    tracing::debug!("[FFI] register_sync_event_sink ←");
+    let engine = get_engine()?;
+    // flutter_rust_bridge 可能在非 Tokio 线程调用此同步函数，
+    // 使用 spawn_blocking + block_on 确保 runtime 上下文可用
+    let rt = tokio::runtime::Runtime::new().map_err(|e| SyncErrorFfi::InternalError {
+        message: format!("创建 Tokio runtime 失败: {}", e),
+    })?;
+    rt.block_on(engine.register_event_sink(sink));
+    Ok(())
+}
+
+// ========== 日志级别 ==========
+
+/// 运行时热修改日志级别（立即生效，无需重启）
+#[frb]
+pub fn set_sync_log_level(level: String) -> Result<(), SyncErrorFfi> {
+    eprintln!("[FFI] set_sync_log_level ← level={}", level);
+    let valid_levels = ["error", "warn", "info", "debug", "trace"];
+    let level_lower = level.to_lowercase();
+    if !valid_levels.contains(&level_lower.as_str()) {
+        return Err(SyncErrorFfi::InternalError {
+            message: format!("无效的日志级别: {}, 可选: {:?}", level, valid_levels),
+        });
+    }
+
+    if LOG_RELOAD_HANDLE.get().is_none() {
+        return Err(SyncErrorFfi::NotInitialized);
+    }
+
+    apply_log_level(&level_lower);
+    Ok(())
+}
+
+// ========== 任务查询 ==========
+
+/// 获取活跃的同步任务列表
+#[frb]
+pub async fn get_active_tasks() -> Result<Vec<SyncTaskFfi>, SyncErrorFfi> {
+    let engine = get_engine()?;
+    let tasks = engine.get_active_tasks().await.map_err(error_to_ffi)?;
+    tracing::trace!("[FFI] get_active_tasks → count={}", tasks.len());
+    Ok(tasks.into_iter().map(task_to_ffi).collect())
+}
+
+/// 获取最近同步任务列表
+#[frb]
+pub async fn get_recent_tasks(limit: u32) -> Result<Vec<SyncTaskFfi>, SyncErrorFfi> {
+    tracing::trace!("[FFI] get_recent_tasks ← limit={}", limit);
+    let engine = get_engine()?;
+    let tasks = engine.get_recent_tasks(limit).await.map_err(error_to_ffi)?;
+    tracing::trace!("[FFI] get_recent_tasks → count={}", tasks.len());
+    Ok(tasks.into_iter().map(task_to_ffi).collect())
+}
+
+/// 获取任务详情（任务项列表）
+#[frb]
+pub async fn get_task_detail(task_id: String) -> Result<Vec<SyncTaskItemFfi>, SyncErrorFfi> {
+    tracing::trace!("[FFI] get_task_detail ← task_id={}", task_id);
+    let engine = get_engine()?;
+    let items = engine
+        .get_task_detail(&task_id)
+        .await
+        .map_err(error_to_ffi)?;
+    tracing::trace!("[FFI] get_task_detail → count={}", items.len());
+    Ok(items.into_iter().map(task_item_to_ffi).collect())
+}
+
+/// 多维度查询任务项
+#[frb]
+pub async fn query_task_items(
+    filter: TaskItemFilterFfi,
+) -> Result<Vec<SyncTaskItemFfi>, SyncErrorFfi> {
+    tracing::trace!(
+        "[FFI] query_task_items ← task_id={:?}, action={:?}, status={:?}, limit={}",
+        filter.task_id,
+        filter.action_type,
+        filter.status,
+        filter.limit
+    );
+    let engine = get_engine()?;
+    let model_filter = crate::models::TaskItemFilter {
+        task_id: filter.task_id,
+        relative_path_contains: filter.relative_path_contains,
+        action_type: filter.action_type,
+        status: filter.status,
+        limit: filter.limit.max(1).min(1000),
+        offset: filter.offset,
+    };
+    let items = engine
+        .query_task_items(&model_filter)
+        .await
+        .map_err(error_to_ffi)?;
+    tracing::trace!("[FFI] query_task_items → count={}", items.len());
+    Ok(items.into_iter().map(task_item_to_ffi).collect())
+}
+
+/// 获取累积统计（从 DB 聚合，跨所有同步任务）
+#[frb]
+pub async fn get_sync_cum_stats() -> Result<SyncCumStatsFfi, SyncErrorFfi> {
+    tracing::trace!("[FFI] get_sync_cum_stats ←");
+    let engine = get_engine()?;
+    let stats = engine.get_cum_stats().await.map_err(error_to_ffi)?;
+    tracing::trace!("[FFI] get_sync_cum_stats → uploaded={}, downloaded={}, renamed={}, moved={}, failed={}, conflicts={}, deleted_local={}, deleted_remote={}, skipped={}",
+        stats.uploaded, stats.downloaded, stats.renamed, stats.moved, stats.failed, stats.conflicts, stats.deleted_local, stats.deleted_remote, stats.skipped);
+    Ok(SyncCumStatsFfi {
+        uploaded: stats.uploaded,
+        downloaded: stats.downloaded,
+        renamed: stats.renamed,
+        moved: stats.moved,
+        failed: stats.failed,
+        conflicts: stats.conflicts,
+        deleted_local: stats.deleted_local,
+        deleted_remote: stats.deleted_remote,
+        skipped: stats.skipped,
+    })
+}
+
+fn task_to_ffi(t: crate::models::SyncTask) -> SyncTaskFfi {
+    SyncTaskFfi {
+        id: t.id,
+        trigger: t.trigger.as_str().to_string(),
+        total_count: t.total_count,
+        completed_count: t.completed_count,
+        failed_count: t.failed_count,
+        status: t.status.as_str().to_string(),
+        created_at: t.created_at,
+        updated_at: t.updated_at,
+        finished_at: t.finished_at,
+    }
+}
+
+fn task_item_to_ffi(i: crate::models::SyncTaskItem) -> SyncTaskItemFfi {
+    SyncTaskItemFfi {
+        id: i.id,
+        task_id: i.task_id,
+        relative_path: i.relative_path,
+        action_type: i.action_type.as_str().to_string(),
+        status: i.status.as_str().to_string(),
+        file_size: i.file_size,
+        error_message: i.error_message,
+        created_at: i.created_at,
+        updated_at: i.updated_at,
+    }
+}

native/sync-core/src/api/ffi_types.rs

@@ -0,0 +1,186 @@
+/// FFI 错误类型
+#[derive(Debug, Clone)]
+pub enum SyncErrorFfi {
+    NotInitialized,
+    NetworkError { message: String },
+    DiskFull { needed: u64, available: u64 },
+    AuthError { message: String },
+    ConflictError { count: u32 },
+    InternalError { message: String },
+}
+
+/// 同步配置
+#[derive(Debug, Clone)]
+pub struct SyncConfigFfi {
+    pub base_url: String,
+    pub access_token: String,
+    pub refresh_token: String,
+    pub local_root: String,
+    pub remote_root: String,
+    pub sync_mode: String,
+    pub conflict_strategy: String,
+    pub wcf_delete_mode: String,
+    pub max_concurrent_transfers: u32,
+    pub bandwidth_limit_kbps: u64,
+    pub excluded_paths: Vec<String>,
+    pub max_workers: u32,
+    pub data_dir: String,
+    pub client_id: String,
+    pub log_level: String,
+}
+
+/// 同步状态快照
+#[derive(Debug, Clone)]
+pub struct SyncStatusFfi {
+    pub state: String,
+    pub synced_files: u64,
+    pub total_files: u64,
+    pub uploading_count: u32,
+    pub downloading_count: u32,
+    pub conflict_count: u32,
+    pub error_count: u32,
+    pub last_sync_time: Option<String>,
+    pub error_message: Option<String>,
+}
+
+/// 初始同步摘要
+#[derive(Debug, Clone)]
+pub struct SyncSummaryFfi {
+    pub uploaded: u32,
+    pub downloaded: u32,
+    pub renamed: u32,
+    pub moved: u32,
+    pub conflicts: u32,
+    pub failed: u32,
+    pub skipped: u32,
+    pub deleted_local: u32,
+    pub deleted_remote: u32,
+    pub duration_ms: u64,
+}
+
+/// 同步事件（Rust → Dart 推送）
+#[derive(Debug, Clone)]
+pub enum SyncEventFfi {
+    StateChanged {
+        new_state: String,
+    },
+    Progress {
+        synced: u64,
+        total: u64,
+        current_file: String,
+    },
+    FileUploaded {
+        local_path: String,
+        remote_uri: String,
+    },
+    FileDownloaded {
+        local_path: String,
+        remote_uri: String,
+    },
+    ConflictDetected {
+        local_path: String,
+        conflict_type: String,
+    },
+    Error {
+        message: String,
+        recoverable: bool,
+    },
+    TokenExpired,
+    DiskSpaceWarning {
+        available_mb: u64,
+    },
+    InitialSyncComplete {
+        summary: SyncSummaryFfi,
+    },
+
+    // Worker 事件
+    WorkerStarted {
+        task_id: String,
+        trigger: String,
+        upload_count: u32,
+        download_count: u32,
+    },
+    WorkerCompleted {
+        task_id: String,
+        uploaded: u32,
+        downloaded: u32,
+        renamed: u32,
+        moved: u32,
+        failed: u32,
+        duration_ms: u64,
+    },
+    WorkerFailed {
+        task_id: String,
+        message: String,
+    },
+    TaskItemUpdated {
+        task_id: String,
+        relative_path: String,
+        action: String,
+        status: String,
+    },
+}
+
+/// Android: 云端相册目录检查结果
+#[derive(Debug, Clone)]
+pub struct CloudAlbumCheckResultFfi {
+    pub dcim_exists: bool,
+    pub pictures_exists: bool,
+    pub dcim_uri: Option<String>,
+    pub pictures_uri: Option<String>,
+    pub camera_exists: bool,
+    pub camera_uri: Option<String>,
+}
+
+/// 同步任务摘要（FFI）
+#[derive(Debug, Clone)]
+pub struct SyncTaskFfi {
+    pub id: String,
+    pub trigger: String,
+    pub total_count: u32,
+    pub completed_count: u32,
+    pub failed_count: u32,
+    pub status: String,
+    pub created_at: String,
+    pub updated_at: String,
+    pub finished_at: Option<String>,
+}
+
+/// 同步任务项（FFI）
+#[derive(Debug, Clone)]
+pub struct SyncTaskItemFfi {
+    pub id: i64,
+    pub task_id: String,
+    pub relative_path: String,
+    pub action_type: String,
+    pub status: String,
+    pub file_size: u64,
+    pub error_message: Option<String>,
+    pub created_at: String,
+    pub updated_at: String,
+}
+
+/// 累积统计（FFI）
+#[derive(Debug, Clone)]
+pub struct SyncCumStatsFfi {
+    pub uploaded: u32,
+    pub downloaded: u32,
+    pub renamed: u32,
+    pub moved: u32,
+    pub failed: u32,
+    pub conflicts: u32,
+    pub deleted_local: u32,
+    pub deleted_remote: u32,
+    pub skipped: u32,
+}
+
+/// 任务项查询过滤器（FFI）
+#[derive(Debug, Clone)]
+pub struct TaskItemFilterFfi {
+    pub task_id: Option<String>,
+    pub relative_path_contains: Option<String>,
+    pub action_type: Option<String>,
+    pub status: Option<String>,
+    pub limit: u32,
+    pub offset: u32,
+}

native/sync-core/src/api/mod.rs

@@ -0,0 +1,2 @@
+pub mod ffi;
+pub mod ffi_types;

native/sync-core/src/api_client.rs

@@ -0,0 +1,826 @@
+use crate::errors::{Result, SyncError};
+use crate::models::*;
+use crate::server_error_code::api_code_to_error;
+use reqwest::Client;
+use serde::Deserialize;
+use std::sync::Arc;
+use tokio::sync::{Mutex, RwLock};
+
+#[derive(Debug, Clone, Deserialize)]
+struct ApiResponse<T> {
+    code: i32,
+    data: Option<T>,
+    msg: Option<String>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+struct RefreshResponse {
+    access_token: String,
+    refresh_token: String,
+}
+
+/// Token 刷新状态：确保并发请求只刷新一次
+struct RefreshState {
+    refreshing: bool,
+    notify: Arc<tokio::sync::Notify>,
+}
+
+pub struct ApiClient {
+    base_url: String,
+    access_token: RwLock<String>,
+    refresh_token: RwLock<String>,
+    refresh_state: Arc<Mutex<RefreshState>>,
+    client: Client,
+    /// 流式下载专用 client，不设整体超时，仅限制连接和读取间隔
+    download_client: Client,
+    client_id: String,
+}
+
+impl ApiClient {
+    pub fn new(base_url: &str, access_token: &str, refresh_token: &str, client_id: &str) -> Self {
+        let client = Client::builder()
+            .connect_timeout(std::time::Duration::from_secs(15))
+            .timeout(std::time::Duration::from_secs(30))
+            .build()
+            .expect("Failed to create HTTP client");
+
+        let download_client = Client::builder()
+            .connect_timeout(std::time::Duration::from_secs(30))
+            .read_timeout(std::time::Duration::from_secs(300))
+            .build()
+            .expect("Failed to create download HTTP client");
+
+        Self {
+            base_url: base_url.trim_end_matches('/').to_string(),
+            access_token: RwLock::new(access_token.to_string()),
+            refresh_token: RwLock::new(refresh_token.to_string()),
+            refresh_state: Arc::new(Mutex::new(RefreshState { refreshing: false, notify: Arc::new(tokio::sync::Notify::new()) })),
+            client,
+            download_client,
+            client_id: client_id.to_string(),
+        }
+    }
+
+    pub async fn update_token(&self, token: String) {
+        *self.access_token.write().await = token;
+    }
+
+    pub async fn update_tokens(&self, access: &str, refresh: &str) {
+        *self.access_token.write().await = access.to_string();
+        *self.refresh_token.write().await = refresh.to_string();
+    }
+
+    pub fn base_url(&self) -> &str {
+        &self.base_url
+    }
+
+    pub fn client_id(&self) -> &str {
+        &self.client_id
+    }
+
+    pub async fn token(&self) -> String {
+        self.access_token.read().await.clone()
+    }
+
+    /// 带并发去重的 token 刷新
+    /// 多个任务同时遇到 401 时，只有一个执行刷新，其他等待刷新完成后自动获取新 token
+    pub async fn refresh_access_token(&self) -> Result<()> {
+        let mut state = self.refresh_state.lock().await;
+
+        if state.refreshing {
+            // 已经有另一个任务在刷新了，等待通知
+            let notify = state.notify.clone();
+            drop(state);
+            notify.notified().await;
+            return Ok(());
+        }
+
+        state.refreshing = true;
+        let notify = state.notify.clone();
+        drop(state);
+
+        let result = self.do_refresh().await;
+
+        let mut state = self.refresh_state.lock().await;
+        state.refreshing = false;
+        drop(state);
+
+        // 通知所有等待者刷新已完成
+        notify.notify_waiters();
+
+        result
+    }
+
+    async fn do_refresh(&self) -> Result<()> {
+        let refresh_token = self.refresh_token.read().await.clone();
+        if refresh_token.is_empty() {
+            return Err(SyncError::Auth("无 refresh_token，无法刷新".into()));
+        }
+
+        tracing::info!("正在刷新 access_token...");
+
+        let resp = self.client
+            .post(format!("{}/session/token/refresh", self.base_url))
+            .json(&serde_json::json!({
+                "refresh_token": refresh_token,
+            }))
+            .send()
+            .await?;
+
+        if !resp.status().is_success() {
+            return Err(SyncError::Auth(format!("Token 刷新失败: HTTP {}", resp.status())));
+        }
+
+        let api_resp: ApiResponse<RefreshResponse> = resp.json().await?;
+        if api_resp.code != 0 {
+            return Err(SyncError::Auth(format!(
+                "Token 刷新失败: {}",
+                api_resp.msg.unwrap_or_else(|| "未知错误".into())
+            )));
+        }
+
+        if let Some(data) = api_resp.data {
+            *self.access_token.write().await = data.access_token;
+            *self.refresh_token.write().await = data.refresh_token;
+            tracing::info!("access_token 刷新成功");
+            Ok(())
+        } else {
+            Err(SyncError::Auth("Token 刷新响应缺少数据".into()))
+        }
+    }
+
+    /// 解析 API 响应
+    async fn parse_response(&self, resp: reqwest::Response) -> Result<serde_json::Value> {
+        if !resp.status().is_success() {
+            return Err(SyncError::Network(format!("HTTP {}", resp.status())));
+        }
+        let api_resp: ApiResponse<serde_json::Value> = resp.json().await?;
+        if api_resp.code == 0 {
+            return Ok(api_resp.data.unwrap_or_default());
+        }
+
+        // 40073 锁冲突需要特殊处理 data
+        if api_resp.code == 40073 {
+            let items = api_resp.data
+                .and_then(|d| d.as_array().cloned())
+                .unwrap_or_default()
+                .iter()
+                .filter_map(|item| {
+                    let path = item.get("path").and_then(|v| v.as_str()).unwrap_or("").to_string();
+                    let token = item.get("token").and_then(|v| v.as_str()).unwrap_or("").to_string();
+                    if !token.is_empty() {
+                        Some(crate::errors::LockConflictItem { path, token })
+                    } else {
+                        None
+                    }
+                })
+                .collect();
+            return Err(SyncError::LockConflict { tokens: items });
+        }
+
+        let msg = api_resp.msg
+            .filter(|m| !m.is_empty())
+            .unwrap_or_default();
+        Err(api_code_to_error(api_resp.code, &msg))
+    }
+
+    /// 发送带认证的请求，自动处理 401（刷新 token 后重试一次）
+    /// request_builder 接收当前 token，返回 RequestBuilder
+    /// 所有请求自动附加 X-Cr-Client-Id header，服务端据此过滤 SSE 自身事件
+    async fn send_with_auth_retry(
+        &self,
+        request_builder: impl Fn(String) -> reqwest::RequestBuilder,
+    ) -> Result<serde_json::Value> {
+        let client_id = self.client_id.clone();
+
+        // 第一次尝试
+        let token = self.token().await;
+        let resp = match request_builder(token)
+            .header("X-Cr-Client-Id", &client_id)
+            .send()
+            .await
+        {
+            Ok(r) => r,
+            Err(e) => {
+                tracing::warn!(
+                    "请求发送失败: kind={:?}, url={:?}, error={}",
+                    e.is_connect(),
+                    e.url().map(|u| u.as_str()),
+                    e
+                );
+                return Err(e.into());
+            }
+        };
+        let result = self.parse_response(resp).await;
+
+        if let Err(SyncError::Auth(_)) = result {
+            // 刷新 token
+            self.refresh_access_token().await?;
+            // 用新 token 重试
+            let new_token = self.token().await;
+            let resp = match request_builder(new_token)
+                .header("X-Cr-Client-Id", &client_id)
+                .send()
+                .await
+            {
+                Ok(r) => r,
+                Err(e) => {
+                    tracing::warn!(
+                        "重试请求发送失败: kind={:?}, url={:?}, error={}",
+                        e.is_connect(),
+                        e.url().map(|u| u.as_str()),
+                        e
+                    );
+                    return Err(e.into());
+                }
+            };
+            return self.parse_response(resp).await;
+        }
+
+        result
+    }
+
+    // ===== 文件列表 =====
+
+    /// 递归列出指定 URI 下的所有文件和目录
+    pub async fn list_all_files(&self, uri: &str) -> Result<Vec<RemoteFileEntry>> {
+        let mut all_files = Vec::new();
+        self.list_all_files_recursive(uri, &mut all_files).await?;
+        Ok(all_files)
+    }
+
+    fn list_all_files_recursive<'a>(
+        &'a self,
+        uri: &'a str,
+        result: &'a mut Vec<RemoteFileEntry>,
+    ) -> std::pin::Pin<Box<dyn std::future::Future<Output = Result<()>> + Send + 'a>> {
+        Box::pin(async move {
+            if result.len() > 1_000_000 {
+                tracing::warn!("文件数量超过 100 万，截断初始同步");
+                return Ok(());
+            }
+
+            let mut next_page_token: Option<String> = None;
+            let mut page = 0u32;
+            let page_size = 2000u32;
+            let mut dirs_to_recurse = Vec::new();
+
+            loop {
+                let resp = self.list_files_page(uri, page, page_size, next_page_token.as_deref()).await?;
+                let count = resp.files.len();
+
+                for file in resp.files {
+                    if file.is_dir {
+                        dirs_to_recurse.push(file.uri.clone());
+                    }
+                    result.push(file);
+                }
+
+                if let Some(token) = resp.pagination.next_page_token {
+                    next_page_token = Some(token);
+                } else if count < page_size as usize {
+                    break;
+                } else {
+                    page += 1;
+                }
+            }
+
+            for dir_uri in dirs_to_recurse {
+                let mut retry = 0u32;
+                loop {
+                    match self.list_all_files_recursive(&dir_uri, result).await {
+                        Ok(()) => break,
+                        Err(e) => {
+                            retry += 1;
+                            if retry > 3 {
+                                tracing::error!("递归列出目录失败，跳过: {}: {}", dir_uri, e);
+                                break;
+                            }
+                            let delay = crate::utils::retry_delay_ms(retry, 2000, 30000);
+                            tracing::warn!("递归列出目录失败 (重试 {}/3): {}: {}, {}ms后重试", retry, dir_uri, e, delay);
+                            tokio::time::sleep(std::time::Duration::from_millis(delay)).await;
+                        }
+                    }
+                }
+            }
+
+            Ok(())
+        })
+    }
+
+    pub async fn list_files_page(
+        &self,
+        uri: &str,
+        page: u32,
+        page_size: u32,
+        next_page_token: Option<&str>,
+    ) -> Result<ListFilesResponse> {
+        let max_retries = 3u32;
+        let mut attempt = 0u32;
+        loop {
+            attempt += 1;
+            match self.list_files_page_inner(uri, page, page_size, next_page_token).await {
+                Ok(resp) => return Ok(resp),
+                Err(SyncError::Auth(_)) => return Err(SyncError::Auth("Token 过期".into())),
+                Err(e) if attempt <= max_retries => {
+                    let delay = crate::utils::retry_delay_ms(attempt, 2000, 30000);
+                    tracing::warn!(
+                        "列出文件失败 (重试 {}/{}): uri={}, error={}, {}ms后重试",
+                        attempt, max_retries, uri, e, delay,
+                    );
+                    tokio::time::sleep(std::time::Duration::from_millis(delay)).await;
+                }
+                Err(e) => return Err(e),
+            }
+        }
+    }
+
+    async fn list_files_page_inner(
+        &self,
+        uri: &str,
+        page: u32,
+        page_size: u32,
+        next_page_token: Option<&str>,
+    ) -> Result<ListFilesResponse> {
+        let data = self.send_with_auth_retry(|token| {
+            let mut req = self.client
+                .get(format!("{}/file", self.base_url))
+                .bearer_auth(&token)
+                .query(&[
+                    ("uri", uri),
+                    ("page", &page.to_string()),
+                    ("page_size", &page_size.to_string()),
+                ]);
+            if let Some(npt) = next_page_token {
+                req = req.query(&[("next_page_token", npt)]);
+            }
+            req
+        }).await?;
+
+        let parent_uri = uri.to_string();
+        let files: Vec<RemoteFileEntry> = if let Some(items) = data.get("files").and_then(|f| f.as_array()) {
+            items.iter().filter_map(|obj| {
+                let name_raw = obj.get("name")?.as_str()?.to_string();
+                let name = percent_decode_str(&name_raw);
+                let path_raw = obj.get("path").and_then(|v| v.as_str()).unwrap_or("").to_string();
+                let path = percent_decode_str(&path_raw);
+                let entry_uri = if path_raw.is_empty() {
+                    format!("{}/{}", parent_uri, name_raw)
+                } else {
+                    path_raw.clone()
+                };
+                let size = obj.get("size").and_then(|s| s.as_u64()).unwrap_or(0);
+                let file_type = obj.get("type").and_then(|t| t.as_u64()).unwrap_or(0);
+                let is_dir = file_type == 1;
+                let file_id = obj.get("id").and_then(|s| s.as_str()).map(String::from);
+                let created_at = obj.get("created_at").and_then(|t| t.as_str()).unwrap_or("");
+                let updated_at = obj.get("updated_at").and_then(|t| t.as_str()).unwrap_or("");
+
+                Some(RemoteFileEntry {
+                    uri: entry_uri,
+                    name,
+                    size,
+                    mtime_ms: parse_timestamp(updated_at),
+                    hash: None,
+                    is_dir,
+                    file_id,
+                    path,
+                    created_at_ms: parse_timestamp(created_at),
+                })
+            }).collect()
+        } else {
+            tracing::warn!("API 响应中未找到 files 数组, data keys: {:?}", data.as_object().map(|m| m.keys().collect::<Vec<_>>()));
+            Vec::new()
+        };
+
+        let pagination = data.get("pagination").cloned().unwrap_or_default();
+        let next_token = pagination.get("next_page_token")
+            .and_then(|t| t.as_str())
+            .map(String::from);
+        let is_cursor = pagination.get("is_cursor")
+            .and_then(|c| c.as_bool())
+            .unwrap_or(false);
+        let total = pagination.get("total_items")
+            .and_then(|t| t.as_u64())
+            .or_else(|| pagination.get("total").and_then(|t| t.as_u64()));
+
+        Ok(ListFilesResponse {
+            files,
+            pagination: Pagination {
+                next_page_token: next_token,
+                is_cursor,
+                total,
+            },
+        })
+    }
+
+    // ===== 上传 =====
+
+    pub async fn create_upload_session(
+        &self,
+        uri: &str,
+        size: u64,
+        overwrite: bool,
+        last_modified: Option<i64>,
+        mime_type: Option<&str>,
+        policy_id: Option<&str>,
+    ) -> Result<UploadSession> {
+        let mut body = serde_json::json!({
+            "uri": uri,
+            "size": size,
+        });
+        if overwrite {
+            body["entity_type"] = serde_json::Value::String("version".to_string());
+        }
+        if let Some(mtime) = last_modified {
+            body["last_modified"] = serde_json::Value::Number(mtime.into());
+        }
+        if let Some(mime) = mime_type {
+            body["mime_type"] = serde_json::Value::String(mime.to_string());
+        }
+        if let Some(pid) = policy_id {
+            body["policy_id"] = serde_json::Value::String(pid.to_string());
+        }
+
+        let data = self.send_with_auth_retry(|token| {
+            self.client
+                .put(format!("{}/file/upload", self.base_url))
+                .bearer_auth(&token)
+                .json(&body)
+        }).await?;
+
+        let session_id = data.get("session_id")
+            .and_then(|s| s.as_str())
+            .unwrap_or("")
+            .to_string();
+        let chunk_size = data.get("chunk_size")
+            .and_then(|c| c.as_u64())
+            .unwrap_or(10 * 1024 * 1024);
+        let upload_urls: Vec<String> = data.get("upload_urls")
+            .and_then(|u| u.as_array())
+            .map(|arr| arr.iter().filter_map(|v| v.as_str().map(String::from)).collect())
+            .unwrap_or_default();
+        let storage_policy_type = data.get("storage_policy")
+            .and_then(|sp| sp.get("type"))
+            .and_then(|t| t.as_str())
+            .unwrap_or("local")
+            .to_string();
+        let callback_secret = data.get("callback_secret")
+            .and_then(|s| s.as_str())
+            .unwrap_or("")
+            .to_string();
+
+        let file_name = uri.rsplit('/').next().unwrap_or(uri).to_string();
+
+        tracing::info!(
+            "[{}] 创建上传会话: policy={}, urls={}, chunk_size={}",
+            file_name, storage_policy_type, upload_urls.len(), chunk_size,
+        );
+
+        Ok(UploadSession {
+            session_id,
+            chunk_size,
+            upload_urls,
+            storage_policy_type,
+            callback_secret,
+            file_name,
+        })
+    }
+
+    pub async fn upload_chunk(
+        &self,
+        session: &UploadSession,
+        index: u32,
+        data: &[u8],
+        file_size: u64,
+        task_id: &str,
+    ) -> Result<()> {
+        if let Some(url) = session.chunk_upload_url(index as usize) {
+            // 远程存储策略：直接上传到外部 URL（OneDrive/S3/OSS 等）
+            self.upload_chunk_to_remote(url, data, index, file_size, session, task_id).await
+        } else {
+            // 本地存储策略：上传到 Cloudreve 服务端
+            self.upload_chunk_local(&session.session_id, index, data).await
+        }
+    }
+
+    /// 本地存储：上传分片到 /file/upload/{session_id}/{index}
+    async fn upload_chunk_local(
+        &self,
+        session_id: &str,
+        index: u32,
+        data: &[u8],
+    ) -> Result<()> {
+        let chunk_data = data.to_vec();
+        let content_len = data.len().to_string();
+        self.send_with_auth_retry(|token| {
+            self.client
+                .post(format!(
+                    "{}/file/upload/{}/{}",
+                    self.base_url, session_id, index
+                ))
+                .bearer_auth(&token)
+                .header("Content-Length", &content_len)
+                .body(chunk_data.clone())
+        }).await?;
+        Ok(())
+    }
+
+    /// 远程存储：上传分片到外部 URL（OneDrive/S3 等），无需 Cloudreve token
+    /// 必须带 Content-Range 头：bytes {start}-{end}/{total}
+    async fn upload_chunk_to_remote(
+        &self,
+        url: &str,
+        data: &[u8],
+        index: u32,
+        file_size: u64,
+        session: &UploadSession,
+        task_id: &str,
+    ) -> Result<()> {
+        let chunk_size = session.chunk_size;
+        let file_name = &session.file_name;
+        let start = index as u64 * chunk_size;
+        let end = start + data.len() as u64 - 1;
+        let content_range = format!("bytes {}-{}/{}", start, end, file_size);
+        let content_len = data.len().to_string();
+
+        tracing::debug!("[{}][{}] 远程存储上传分片 {}: Content-Range={}", task_id, file_name, index, content_range);
+
+        let resp = self.client
+            .put(url)
+            .header("Content-Length", &content_len)
+            .header("Content-Range", &content_range)
+            .body(data.to_vec())
+            .timeout(std::time::Duration::from_secs(300))
+            .send()
+            .await
+            .map_err(|e| {
+                tracing::warn!("[{}][{}] 远程存储上传失败: error={}", task_id, file_name, e);
+                SyncError::from(e)
+            })?;
+
+        if !resp.status().is_success() {
+            let status = resp.status();
+            let body = resp.text().await.unwrap_or_default();
+            return Err(SyncError::UploadFailed(format!(
+                "远程存储返回 HTTP {}: {}",
+                status,
+                body.chars().take(200).collect::<String>()
+            )));
+        }
+
+        // 202 = 分片已接收，上传未完成，继续下一个分片
+        // 200/201 = 上传完成，文件已创建
+        let status = resp.status();
+        if status.as_u16() == 202 {
+            tracing::debug!("[{}][{}] 远程存储分片 {} 已接收(202)，继续上传", task_id, file_name, index);
+        } else if status.as_u16() == 200 || status.as_u16() == 201 {
+            tracing::info!("[{}][{}] 远程存储上传完成({}), 分片 {}", task_id, file_name, status, index);
+        }
+
+        Ok(())
+    }
+
+    /// 远程存储上传完成后回调 Cloudreve 服务端
+    /// POST /callback/{storage_policy_type}/{session_id}/{callback_secret}
+    pub async fn callback_upload_complete(&self, session: &UploadSession, task_id: &str) -> Result<()> {
+        if session.callback_secret.is_empty() {
+            tracing::warn!("[{}][{}] 上传回调跳过: callback_secret 为空", task_id, session.file_name);
+            return Ok(());
+        }
+
+        let url = format!(
+            "{}/callback/{}/{}/{}",
+            self.base_url,
+            session.storage_policy_type,
+            session.session_id,
+            session.callback_secret,
+        );
+        tracing::info!("[{}][{}] 上传完成回调: policy={}, session={}", task_id, session.file_name, session.storage_policy_type, session.session_id);
+
+        self.send_with_auth_retry(|token| {
+            self.client
+                .post(&url)
+                .bearer_auth(&token)
+        }).await?;
+
+        tracing::info!("[{}][{}] 上传完成回调成功: policy={}, session={}", task_id, session.file_name, session.storage_policy_type, session.session_id);
+        Ok(())
+    }
+
+    // ===== 下载 =====
+
+    pub async fn get_download_url(&self, uris: &[&str]) -> Result<Vec<String>> {
+        let body = serde_json::json!({
+            "uris": uris,
+            "download": false,
+        });
+
+        let data = self.send_with_auth_retry(|token| {
+            self.client
+                .post(format!("{}/file/url", self.base_url))
+                .bearer_auth(&token)
+                .json(&body)
+        }).await?;
+
+        let urls = data.get("urls")
+            .and_then(|u| u.as_array())
+            .map(|arr| {
+                arr.iter()
+                    .filter_map(|item| item.get("url")?.as_str().map(String::from))
+                    .collect()
+            })
+            .unwrap_or_default();
+
+        Ok(urls)
+    }
+
+    pub async fn stream_download(
+        &self,
+        url: &str,
+        offset: u64,
+    ) -> Result<reqwest::Response> {
+        let mut req = self.download_client.get(url);
+        if offset > 0 {
+            req = req.header("Range", format!("bytes={}-", offset));
+        }
+        let resp = req.send().await?;
+        Ok(resp)
+    }
+
+    // ===== 创建文件/目录 =====
+
+    pub async fn create_directory(&self, parent_uri: &str, name: &str) -> Result<RemoteFileEntry> {
+        let uri = format!("{}/{}", parent_uri, name);
+        let body = serde_json::json!({
+            "uri": uri,
+            "type": "folder",
+        });
+
+        let _data = self.send_with_auth_retry(|token| {
+            self.client
+                .post(format!("{}/file/create", self.base_url))
+                .bearer_auth(&token)
+                .json(&body)
+        }).await?;
+
+        Ok(RemoteFileEntry {
+            uri,
+            name: name.to_string(),
+            size: 0,
+            mtime_ms: 0,
+            hash: None,
+            is_dir: true,
+            file_id: None,
+            path: String::new(),
+            created_at_ms: 0,
+        })
+    }
+
+    // ===== 删除 =====
+
+    pub async fn delete_files(&self, uris: &[&str]) -> Result<()> {
+        let body = serde_json::json!({
+            "uris": uris,
+        });
+
+        let result = self.send_with_auth_retry(|token| {
+            let client = &self.client;
+            let base_url = &self.base_url;
+            let body = body.clone();
+            client
+                .delete(format!("{}/file", base_url))
+                .bearer_auth(&token)
+                .json(&body)
+        }).await;
+
+        match result {
+            Ok(_) => Ok(()),
+            Err(SyncError::LockConflict { tokens }) => {
+                for item in &tokens {
+                    tracing::warn!(
+                        "删除异常: code(40073), 进行解锁, token: {}, path: {}",
+                        item.token, item.path
+                    );
+                }
+                self.force_unlock_files(&tokens).await?;
+
+                // 解锁后重试删除
+                self.send_with_auth_retry(|token| {
+                    let client = &self.client;
+                    let base_url = &self.base_url;
+                    let body = body.clone();
+                    client
+                        .delete(format!("{}/file", base_url))
+                        .bearer_auth(&token)
+                        .json(&body)
+                }).await?;
+                Ok(())
+            }
+            Err(e) => Err(e),
+        }
+    }
+
+    /// 强制解锁文件 — DELETE /file/lock
+    pub async fn force_unlock_files(&self, items: &[crate::errors::LockConflictItem]) -> Result<()> {
+        let tokens: Vec<&str> = items.iter().map(|i| i.token.as_str()).collect();
+        if tokens.is_empty() {
+            return Ok(());
+        }
+
+        let body = serde_json::json!({
+            "tokens": tokens,
+        });
+
+        self.send_with_auth_retry(|token| {
+            let client = &self.client;
+            let base_url = &self.base_url;
+            let body = body.clone();
+            client
+                .delete(format!("{}/file/lock", base_url))
+                .bearer_auth(&token)
+                .json(&body)
+        }).await?;
+
+        tracing::info!("强制解锁完成: {} 个文件", items.len());
+        Ok(())
+    }
+
+    // ===== 移动 =====
+
+    pub async fn move_files(&self, src_uris: &[&str], dst_uri: &str, copy: bool) -> Result<()> {
+        let body = serde_json::json!({
+            "uris": src_uris,
+            "dst": dst_uri,
+            "copy": copy,
+        });
+
+        self.send_with_auth_retry(|token| {
+            self.client
+                .post(format!("{}/file/move", self.base_url))
+                .bearer_auth(&token)
+                .json(&body)
+        }).await?;
+
+        Ok(())
+    }
+
+    // ===== 重命名 =====
+
+    pub async fn rename_file(&self, uri: &str, new_name: &str) -> Result<()> {
+        let body = serde_json::json!({
+            "uri": uri,
+            "new_name": new_name,
+        });
+
+        self.send_with_auth_retry(|token| {
+            self.client
+                .post(format!("{}/file/rename", self.base_url))
+                .bearer_auth(&token)
+                .json(&body)
+        }).await?;
+
+        Ok(())
+    }
+
+    // ===== 获取文件信息 =====
+
+    pub async fn get_file_info(&self, uri: &str) -> Result<RemoteFileEntry> {
+        let data = self.send_with_auth_retry(|token| {
+            self.client
+                .get(format!("{}/file/info", self.base_url))
+                .bearer_auth(&token)
+                .query(&[("uri", uri)])
+        }).await?;
+
+        Ok(RemoteFileEntry {
+            uri: data.get("uri").and_then(|u| u.as_str()).unwrap_or(uri).to_string(),
+            name: percent_decode_str(data.get("name").and_then(|n| n.as_str()).unwrap_or("")),
+            size: data.get("size").and_then(|s| s.as_u64()).unwrap_or(0),
+            mtime_ms: data.get("updated_at").and_then(|t| t.as_str()).map(parse_timestamp).unwrap_or(0),
+            hash: None,
+            is_dir: data.get("type").and_then(|t| t.as_u64()).unwrap_or(0) == 1,
+            file_id: data.get("id").and_then(|i| i.as_str()).map(String::from),
+            path: percent_decode_str(data.get("path").and_then(|p| p.as_str()).unwrap_or("")),
+            created_at_ms: data.get("created_at").and_then(|t| t.as_str()).map(parse_timestamp).unwrap_or(0),
+        })
+    }
+}
+
+/// 解析 Cloudreve 时间戳 (ISO 8601 或 Unix ms)
+fn parse_timestamp(s: &str) -> i64 {
+    if let Ok(dt) = chrono::DateTime::parse_from_rfc3339(s) {
+        return dt.timestamp_millis();
+    }
+    if let Ok(ts) = s.parse::<i64>() {
+        if ts < 10_000_000_000 {
+            return ts * 1000;
+        }
+        return ts;
+    }
+    0
+}
+
+fn percent_decode_str(s: &str) -> String {
+    urlencoding::decode(s).unwrap_or_else(|_| s.into()).to_string()
+}

native/sync-core/src/conflict_resolver.rs

@@ -0,0 +1,70 @@
+use crate::models::*;
+
+#[derive(Clone)]
+pub struct ConflictResolver {
+    pub default_strategy: ConflictStrategy,
+}
+
+impl ConflictResolver {
+    pub fn new(strategy: ConflictStrategy) -> Self {
+        Self {
+            default_strategy: strategy,
+        }
+    }
+
+    pub fn resolve(
+        &self,
+        conflict_type: ConflictType,
+        local_mtime: i64,
+        remote_mtime: i64,
+        local_size: u64,
+        remote_size: u64,
+        local_name: &str,
+    ) -> ConflictResolution {
+        self.resolve_with_strategy(
+            &self.default_strategy,
+            conflict_type,
+            local_mtime,
+            remote_mtime,
+            local_size,
+            remote_size,
+            local_name,
+        )
+    }
+
+    #[allow(clippy::too_many_arguments)]
+    pub fn resolve_with_strategy(
+        &self,
+        strategy: &ConflictStrategy,
+        _conflict_type: ConflictType,
+        local_mtime: i64,
+        remote_mtime: i64,
+        local_size: u64,
+        remote_size: u64,
+        local_name: &str,
+    ) -> ConflictResolution {
+        match strategy {
+            ConflictStrategy::KeepLocal => ConflictResolution::UploadLocal,
+            ConflictStrategy::KeepRemote => ConflictResolution::DownloadRemote,
+            ConflictStrategy::KeepBoth => {
+                let new_name = crate::utils::generate_conflict_name(local_name);
+                ConflictResolution::RenameLocal { new_name }
+            }
+            ConflictStrategy::NewestWins => {
+                if local_mtime > remote_mtime {
+                    ConflictResolution::UploadLocal
+                } else {
+                    ConflictResolution::DownloadRemote
+                }
+            }
+            ConflictStrategy::LargestWins => {
+                if local_size > remote_size {
+                    ConflictResolution::UploadLocal
+                } else {
+                    ConflictResolution::DownloadRemote
+                }
+            }
+            ConflictStrategy::Manual => ConflictResolution::MarkManual,
+        }
+    }
+}

native/sync-core/src/diff.rs

@@ -0,0 +1,209 @@
+use crate::models::*;
+use std::collections::{HashMap, HashSet};
+
+/// 三路差异计算: 本地 vs 远程 vs 数据库，按同步模式过滤
+pub fn compute_diff(
+    local_files: &[LocalFileEntry],
+    remote_files: &[RemoteFileEntry],
+    db_mappings: &HashMap<String, FileMapping>,
+    remote_root: &str,
+    sync_mode: &SyncMode,
+) -> SyncPlan {
+    let mut plan = SyncPlan::default();
+
+    // 构建索引: relative_path → entry（统一正斜杠）
+    let local_map: HashMap<String, &LocalFileEntry> = local_files
+        .iter()
+        .map(|e| {
+            (
+                crate::utils::normalize_path(&e.relative_path.to_string_lossy()),
+                e,
+            )
+        })
+        .collect();
+
+    let remote_map: HashMap<String, &RemoteFileEntry> = remote_files
+        .iter()
+        .map(|e| {
+            let rel = remote_relative_path(remote_root, &e.path, &e.name, e.is_dir);
+            (rel, e)
+        })
+        .collect();
+
+    // 收集所有路径
+    let mut all_paths: HashSet<String> = HashSet::new();
+    for k in local_map.keys() {
+        all_paths.insert(k.clone());
+    }
+    for k in remote_map.keys() {
+        all_paths.insert(k.clone());
+    }
+    for k in db_mappings.keys() {
+        all_paths.insert(k.clone());
+    }
+
+    for path in &all_paths {
+        let local = local_map.get(path.as_str()).copied();
+        let remote = remote_map.get(path.as_str()).copied();
+        let db = db_mappings.get(path.as_str());
+
+        match (local, remote, db) {
+            // 本地有，远程无 → 上传（UploadOnly、Full、MirrorWcf、AlbumUpload）
+            (Some(l), None, _) => {
+                if matches!(sync_mode, SyncMode::DownloadOnly | SyncMode::AlbumDownload) {
+                    continue;
+                }
+                if !l.is_dir && l.size == 0 {
+                    continue;
+                }
+                if let Some(db_m) = db {
+                    if db_m.sync_status == SyncFileStatus::Synced {
+                        plan.uploads.push(SyncAction {
+                            relative_path: path.clone(),
+                            local_entry: Some((*l).clone()),
+                            remote_entry: None,
+                            db_mapping: Some(db_m.clone()),
+                        });
+                    }
+                } else {
+                    plan.uploads.push(SyncAction {
+                        relative_path: path.clone(),
+                        local_entry: Some((*l).clone()),
+                        remote_entry: None,
+                        db_mapping: None,
+                    });
+                }
+            }
+
+            // 远程有，本地无 → 下载（DownloadOnly、Full、MirrorWcf、AlbumDownload）
+            (None, Some(r), _) => {
+                if matches!(sync_mode, SyncMode::UploadOnly | SyncMode::AlbumUpload) {
+                    continue;
+                }
+                if r.is_dir {
+                    plan.mkdirs_local.push(path.clone());
+                } else if r.size == 0 {
+                    continue;
+                } else {
+                    plan.downloads.push(SyncAction {
+                        relative_path: path.clone(),
+                        local_entry: None,
+                        remote_entry: Some((*r).clone()),
+                        db_mapping: db.cloned(),
+                    });
+                }
+            }
+
+            // 两边都有
+            (Some(l), Some(r), db_m) => {
+                if l.is_dir && r.is_dir {
+                    continue;
+                }
+
+                let content_match = match (&l.quick_hash, &r.hash) {
+                    (lh, Some(rh)) if !lh.is_empty() && !rh.is_empty() => lh == rh,
+                    _ => l.size == r.size,
+                };
+
+                if content_match {
+                    // 内容一致，标记已同步
+                } else {
+                    let conflict_type = if l.is_dir != r.is_dir {
+                        ConflictType::TypeMismatch
+                    } else {
+                        ConflictType::BothModified
+                    };
+
+                    plan.conflicts.push(SyncConflict {
+                        relative_path: path.clone(),
+                        conflict_type,
+                        local_entry: Some((*l).clone()),
+                        remote_entry: Some((*r).clone()),
+                        db_mapping: db_m.cloned(),
+                    });
+                }
+            }
+
+            (None, None, Some(_)) => {}
+
+            _ => {}
+        }
+    }
+
+    // 远程目录结构（UploadOnly、Full、MirrorWcf、AlbumUpload）
+    if !matches!(sync_mode, SyncMode::DownloadOnly | SyncMode::AlbumDownload) {
+        for (path, local) in &local_map {
+            if local.is_dir && !remote_map.contains_key(path.as_str()) {
+                plan.mkdirs_remote.push(path.clone());
+            }
+        }
+    }
+
+    // 按 sync_mode 自动解决冲突
+    resolve_conflicts_by_mode(&mut plan, sync_mode);
+
+    plan
+}
+
+/// 根据同步模式自动解决冲突
+fn resolve_conflicts_by_mode(plan: &mut SyncPlan, sync_mode: &SyncMode) {
+    if plan.conflicts.is_empty() {
+        return;
+    }
+
+    let conflicts = std::mem::take(&mut plan.conflicts);
+    for conflict in conflicts {
+        match sync_mode {
+            SyncMode::UploadOnly | SyncMode::MirrorWcf | SyncMode::AlbumUpload => {
+                // 冲突一律覆盖上传（MirrorWcf 本地编辑优先）
+                let action = SyncAction {
+                    relative_path: conflict.relative_path.clone(),
+                    local_entry: conflict.local_entry.clone(),
+                    remote_entry: conflict.remote_entry.clone(),
+                    db_mapping: conflict.db_mapping.clone(),
+                };
+                plan.uploads.push(action);
+            }
+            SyncMode::DownloadOnly | SyncMode::AlbumDownload => {
+                // 冲突一律覆盖下载
+                let action = SyncAction {
+                    relative_path: conflict.relative_path.clone(),
+                    local_entry: conflict.local_entry.clone(),
+                    remote_entry: conflict.remote_entry.clone(),
+                    db_mapping: conflict.db_mapping.clone(),
+                };
+                plan.downloads.push(action);
+            }
+            _ => {
+                // Full: 保留冲突，由 Worker 用 conflict_strategy 解决
+                plan.conflicts.push(conflict);
+            }
+        }
+    }
+}
+
+/// 从远程 path 字段提取相对路径
+pub fn remote_relative_path(remote_root: &str, path: &str, name: &str, is_dir: bool) -> String {
+    let _ = is_dir;
+    // 1. 尝试匹配完整 URI 前缀（remote_root = cloudreve://my/example）
+    if let Some(rel) = path.strip_prefix(remote_root) {
+        return rel.trim_start_matches('/').to_string();
+    }
+    // 2. SSE 的 path 是相对路径（如 /Readest/Books/file.txt），直接 trim 前导 /
+    if path.starts_with('/') {
+        return path.trim_start_matches('/').to_string();
+    }
+    // 3. 回退：使用文件名
+    name.to_string()
+}
+
+/// 从字符串解析 SyncFileStatus
+pub fn parse_sync_status_from_str(s: &str) -> SyncFileStatus {
+    match s {
+        "uploading" => SyncFileStatus::Uploading,
+        "downloading" => SyncFileStatus::Downloading,
+        "conflict" => SyncFileStatus::Conflict,
+        "placeholder" => SyncFileStatus::Placeholder,
+        _ => SyncFileStatus::Synced,
+    }
+}

native/sync-core/src/downloader.rs

@@ -0,0 +1,308 @@
+use crate::api_client::ApiClient;
+use crate::errors::{Result, SyncError};
+use crate::file_lock::FileLockRegistry;
+use crate::models::*;
+use crate::sync_db::SyncDb;
+use tokio::sync::Semaphore;
+
+/// 下载单个文件（含重试 + 断点续传），受并发信号量控制
+#[allow(clippy::too_many_arguments)]
+pub async fn download_file(
+    task_id: &str,
+    action: &SyncAction,
+    config: &WorkerConfig,
+    api: &ApiClient,
+    db: &SyncDb,
+    file_locks: &FileLockRegistry,
+    semaphore: &Semaphore,
+    root_id: &str,
+) -> Result<()> {
+    let remote = action.remote_entry.as_ref().ok_or_else(|| {
+        SyncError::Internal("下载操作缺少远程文件信息".into())
+    })?;
+
+    let _lock = file_locks.acquire(&action.relative_path).await;
+
+    if remote.is_dir {
+        let local_path = config.local_root.join(&action.relative_path);
+        tokio::fs::create_dir_all(&local_path).await?;
+        tracing::debug!("[{}] 创建本地目录: {}", task_id, action.relative_path);
+        return Ok(());
+    }
+
+    let local_path = config.local_root.join(&action.relative_path);
+
+    let _permit = semaphore.acquire().await
+        .map_err(|e| SyncError::Internal(format!("获取传输信号量失败: {}", e)))?;
+
+    // 信号量获取后标记为 Running（实际开始传输）
+    let _ = db
+        .update_task_item_status_by_path(
+            task_id,
+            &action.relative_path,
+            "download",
+            &TaskItemStatus::Running,
+            None,
+        )
+        .await;
+
+    tracing::info!("[{}] 开始下载: {} ({}bytes)", task_id, action.relative_path, remote.size);
+
+    // 确保父目录存在
+    if let Some(parent) = local_path.parent() {
+        if !parent.exists() {
+            tokio::fs::create_dir_all(parent).await?;
+        }
+    }
+
+    let max_retries = 3u32;
+    let mut attempt = 0u32;
+    let tmp_path = local_path.with_extension(".sync_tmp");
+
+    loop {
+        attempt += 1;
+
+        // 检查临时文件已有大小，用于断点续传
+        let resume_offset = if tmp_path.exists() {
+            tokio::fs::metadata(&tmp_path).await.map(|m| m.len()).unwrap_or(0)
+        } else {
+            0
+        };
+
+        let urls = match api.get_download_url(&[&remote.uri]).await {
+            Ok(urls) => urls,
+            Err(SyncError::Auth(_)) => return Err(SyncError::Auth("Token 过期".into())),
+            Err(e) if attempt <= max_retries => {
+                let delay = crate::utils::retry_delay_ms(attempt, 1000, 30000);
+                tracing::warn!("[{}] 下载重试 ({}/{}): {} 获取链接失败: {}", task_id, attempt, max_retries, action.relative_path, e);
+                tokio::time::sleep(std::time::Duration::from_millis(delay)).await;
+                continue;
+            }
+            Err(e) => return Err(e),
+        };
+
+        let download_url = match urls.first() {
+            Some(u) => u.clone(),
+            None => {
+                tracing::error!("[{}] 未获取到下载链接, uri={}", task_id, remote.uri);
+                return Err(SyncError::Network("未获取到下载链接".into()));
+            }
+        };
+
+        let resp = match api.stream_download(&download_url, resume_offset).await {
+            Ok(r) => r,
+            Err(SyncError::Auth(_)) => return Err(SyncError::Auth("Token 过期".into())),
+            Err(e) if attempt <= max_retries => {
+                let delay = crate::utils::retry_delay_ms(attempt, 1000, 30000);
+                tracing::warn!("[{}] 下载重试 ({}/{}): {} 连接失败: {}", task_id, attempt, max_retries, action.relative_path, e);
+                tokio::time::sleep(std::time::Duration::from_millis(delay)).await;
+                continue;
+            }
+            Err(e) => return Err(e),
+        };
+
+        match stream_to_file(resp, &tmp_path, config.bandwidth_limit, resume_offset).await {
+            Ok(_) => {
+                tracing::debug!("[{}] 下载写入完成: {} ({}bytes)", task_id, tmp_path.display(), remote.size);
+                tokio::fs::rename(&tmp_path, &local_path).await?;
+
+                if remote.mtime_ms > 0 {
+                    let mtime = std::time::UNIX_EPOCH + std::time::Duration::from_millis(remote.mtime_ms as u64);
+                    let _ = filetime::set_file_mtime(&local_path, filetime::FileTime::from_system_time(mtime));
+                }
+
+                let local_hash = crate::utils::quick_hash(&local_path, remote.size).await.unwrap_or_default();
+                db.upsert_file_mapping(&FileMapping {
+                    id: 0,
+                    sync_root_id: root_id.to_string(),
+                    local_path: std::path::PathBuf::from(&action.relative_path),
+                    remote_uri: remote.uri.clone(),
+                    remote_file_id: remote.file_id.clone(),
+                    local_hash: Some(local_hash.clone()),
+                    remote_hash: remote.hash.clone().or(Some(local_hash)),
+                    local_mtime: Some(remote.mtime_ms),
+                    remote_mtime: Some(remote.mtime_ms),
+                    local_size: Some(remote.size),
+                    remote_size: Some(remote.size),
+                    sync_status: SyncFileStatus::Synced,
+                    is_placeholder: false,
+                }).await?;
+
+                tracing::info!("[{}] 下载完成: {}", task_id, action.relative_path);
+                return Ok(());
+            }
+            Err(e) if attempt <= max_retries => {
+                let delay = crate::utils::retry_delay_ms(attempt, 1000, 30000);
+                // 保留临时文件用于断点续传
+                let existing_size = tokio::fs::metadata(&tmp_path).await.map(|m| m.len()).unwrap_or(0);
+                if existing_size > 0 {
+                    tracing::warn!(
+                        "[{}] 下载重试 ({}/{}): {} 写入失败(已下载{}bytes，将从断点续传): {}",
+                        task_id, attempt, max_retries, action.relative_path, existing_size, e,
+                    );
+                } else {
+                    tracing::warn!(
+                        "[{}] 下载重试 ({}/{}): {} 写入失败: {}",
+                        task_id, attempt, max_retries, action.relative_path, e,
+                    );
+                }
+                tokio::time::sleep(std::time::Duration::from_millis(delay)).await;
+                continue;
+            }
+            Err(e) => {
+                let _ = tokio::fs::remove_file(&tmp_path).await;
+                return Err(e);
+            }
+        }
+    }
+}
+
+/// 流式写入文件（含带宽限速 + 断点续传）
+/// resume_offset > 0 时以追加模式打开文件，跳过已下载部分
+pub async fn stream_to_file(
+    resp: reqwest::Response,
+    tmp_path: &std::path::Path,
+    bandwidth_limit: Option<u64>,
+    resume_offset: u64,
+) -> Result<()> {
+    use tokio::io::{AsyncWriteExt, AsyncSeekExt};
+    use futures_util::StreamExt;
+
+    let mut file = if resume_offset > 0 && tmp_path.exists() {
+        // 断点续传：追加模式
+        let mut f = tokio::fs::OpenOptions::new()
+            .read(true)
+            .write(true)
+            .open(tmp_path)
+            .await?;
+        f.seek(std::io::SeekFrom::End(0)).await?;
+        f
+    } else {
+        tokio::fs::File::create(tmp_path).await?
+    };
+
+    let mut stream = resp.bytes_stream();
+    let mut total_bytes = resume_offset;
+
+    match bandwidth_limit {
+        None => {
+            while let Some(chunk) = stream.next().await {
+                let chunk = chunk.map_err(|e| SyncError::Network(e.to_string()))?;
+                file.write_all(&chunk).await?;
+            }
+        }
+        Some(limit) => {
+            let transfer_start = std::time::Instant::now();
+
+            while let Some(chunk) = stream.next().await {
+                let chunk = chunk.map_err(|e| SyncError::Network(e.to_string()))?;
+                total_bytes += chunk.len() as u64;
+                file.write_all(&chunk).await?;
+
+                let expected_elapsed = std::time::Duration::from_micros(
+                    total_bytes * 1_000_000 / limit
+                );
+                let actual_elapsed = transfer_start.elapsed();
+                if expected_elapsed > actual_elapsed {
+                    tokio::time::sleep(expected_elapsed - actual_elapsed).await;
+                }
+            }
+        }
+    }
+
+    file.flush().await?;
+    Ok(())
+}
+
+/// 从 URL 下载文件到指定路径（WCF 水合使用）
+pub async fn download_file_from_url(
+    download_url: &str,
+    local_path: &std::path::Path,
+    expected_size: u64,
+    bandwidth_limit: Option<u64>,
+) -> Result<()> {
+    let client = reqwest::Client::new();
+    let mut request = client.get(download_url);
+
+    // 断点续传
+    let resume_offset = if local_path.exists() {
+        let metadata = tokio::fs::metadata(local_path).await?;
+        if metadata.len() > 0 && metadata.len() < expected_size {
+            request = request.header("Range", format!("bytes={}-", metadata.len()));
+            metadata.len()
+        } else {
+            0
+        }
+    } else {
+        0
+    };
+
+    let resp = request.send().await.map_err(|e| SyncError::Network(e.to_string()))?;
+
+    if !resp.status().is_success() && resp.status().as_u16() != 206 {
+        return Err(SyncError::Network(format!("下载失败: HTTP {}", resp.status())));
+    }
+
+    let tmp_path = local_path.with_extension(format!(
+        "{}.sync_tmp",
+        local_path.extension().map(|e| e.to_string_lossy().to_string()).unwrap_or_default()
+    ));
+
+    stream_to_file(resp, &tmp_path, bandwidth_limit, resume_offset).await?;
+
+    // 重命名临时文件为最终文件
+    if tmp_path.exists() {
+        let _ = std::fs::remove_file(local_path);
+        std::fs::rename(&tmp_path, local_path)
+            .map_err(|e| SyncError::FileSystem(format!("重命名临时文件失败: {}", e)))?;
+    }
+
+    Ok(())
+}
+
+/// 从 URL 下载数据到内存缓冲区（WCF CfExecute 水合使用）
+pub async fn download_to_buffer(
+    api: &ApiClient,
+    download_url: &str,
+    bandwidth_limit: Option<u64>,
+) -> Result<Vec<u8>> {
+    use futures_util::StreamExt;
+
+    let resp = api.stream_download(download_url, 0).await?;
+
+    if !resp.status().is_success() {
+        return Err(SyncError::Network(format!("下载失败: HTTP {}", resp.status())));
+    }
+
+    let content_length = resp.content_length();
+    let mut buffer = Vec::with_capacity(content_length.unwrap_or(0) as usize);
+    let mut stream = resp.bytes_stream();
+    let mut total_bytes: u64 = 0;
+
+    match bandwidth_limit {
+        None => {
+            while let Some(chunk) = stream.next().await {
+                let chunk = chunk.map_err(|e| SyncError::Network(e.to_string()))?;
+                buffer.extend_from_slice(&chunk);
+            }
+        }
+        Some(limit) => {
+            let transfer_start = std::time::Instant::now();
+            while let Some(chunk) = stream.next().await {
+                let chunk = chunk.map_err(|e| SyncError::Network(e.to_string()))?;
+                total_bytes += chunk.len() as u64;
+                buffer.extend_from_slice(&chunk);
+
+                let expected_elapsed = std::time::Duration::from_micros(
+                    total_bytes * 1_000_000 / limit
+                );
+                let actual_elapsed = transfer_start.elapsed();
+                if expected_elapsed > actual_elapsed {
+                    tokio::time::sleep(expected_elapsed - actual_elapsed).await;
+                }
+            }
+        }
+    }
+
+    Ok(buffer)
+}

native/sync-core/src/errors.rs

@@ -0,0 +1,127 @@
+use std::error::Error as StdError;
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum SyncError {
+    #[error("网络错误: {0}")]
+    Network(String),
+
+    #[error("磁盘空间不足: 需要 {needed} 字节, 可用 {available} 字节")]
+    DiskFull { needed: u64, available: u64 },
+
+    #[error("认证错误: {0}")]
+    Auth(String),
+
+    #[error("远程文件已存在")]
+    ObjectExisted,
+
+    #[error("存储策略不允许: {0}")]
+    StoragePolicyDenied(String),
+
+    #[error("上传失败: {0}")]
+    UploadFailed(String),
+
+    #[error("文件未找到: {0}")]
+    FileNotFound(String),
+
+    #[error("权限不足: {0}")]
+    PermissionDenied(String),
+
+    #[error("文件锁定冲突")]
+    LockConflict { tokens: Vec<LockConflictItem> },
+
+    #[error("冲突: {count} 个文件存在冲突")]
+    Conflict { count: u32 },
+
+    #[error("数据库错误: {0}")]
+    Database(String),
+
+    #[error("文件系统错误: {0}")]
+    FileSystem(String),
+
+    #[error("路径遍历攻击: {path} 不在 {root} 下")]
+    PathTraversal { path: String, root: String },
+
+    #[error("引擎未初始化")]
+    NotInitialized,
+
+    #[error("引擎已初始化")]
+    AlreadyInitialized,
+
+    #[error("同步已取消")]
+    Cancelled,
+
+    #[error("内部错误: {0}")]
+    Internal(String),
+}
+
+impl From<rusqlite::Error> for SyncError {
+    fn from(e: rusqlite::Error) -> Self {
+        SyncError::Database(e.to_string())
+    }
+}
+
+impl From<r2d2::Error> for SyncError {
+    fn from(e: r2d2::Error) -> Self {
+        SyncError::Database(e.to_string())
+    }
+}
+
+impl From<reqwest::Error> for SyncError {
+    fn from(e: reqwest::Error) -> Self {
+        let mut detail = String::new();
+        if e.is_connect() {
+            detail.push_str("连接失败");
+        } else if e.is_timeout() {
+            detail.push_str("请求超时");
+        } else if e.is_request() {
+            detail.push_str("请求构建失败");
+        } else if e.is_body() {
+            detail.push_str("请求体错误");
+        } else if e.is_decode() {
+            detail.push_str("响应解码失败");
+        } else if e.is_redirect() {
+            detail.push_str("重定向过多");
+        }
+        let url = e.url().map(|u| u.to_string()).unwrap_or_default();
+        let source = StdError::source(&e)
+            .map(|s| format!(": {s}"))
+            .unwrap_or_default();
+        let msg = e.to_string();
+        // 如果 detail 为空，用 reqwest 原始消息
+        if detail.is_empty() {
+            SyncError::Network(if url.is_empty() {
+                format!("{msg}{source}")
+            } else {
+                format!("{msg} [{url}]{source}")
+            })
+        } else {
+            SyncError::Network(if url.is_empty() {
+                format!("{detail}: {msg}{source}")
+            } else {
+                format!("{detail}: {msg} [{url}]{source}")
+            })
+        }
+    }
+}
+
+impl From<std::io::Error> for SyncError {
+    fn from(e: std::io::Error) -> Self {
+        SyncError::FileSystem(e.to_string())
+    }
+}
+
+impl From<tokio::task::JoinError> for SyncError {
+    fn from(e: tokio::task::JoinError) -> Self {
+        SyncError::Internal(e.to_string())
+    }
+}
+
+/// 锁冲突条目 — 来自 40073 响应的 data 数组
+#[derive(Debug, Clone)]
+pub struct LockConflictItem {
+    pub path: String,
+    pub token: String,
+}
+
+pub type Result<T> = std::result::Result<T, SyncError>;

native/sync-core/src/event_handler/mod.rs

@@ -0,0 +1,290 @@
+mod sse;
+
+use crate::api_client::ApiClient;
+use crate::errors::Result;
+use crate::models::{RemoteFileEntry, RemoteFileEvent};
+use sse::SseFileEvent;
+use std::collections::HashMap;
+use std::path::PathBuf;
+use std::sync::Arc;
+use std::time::{Duration, Instant};
+use tokio::sync::mpsc;
+
+pub struct EventHandler {
+    api: Arc<ApiClient>,
+    client_id: String,
+}
+
+impl EventHandler {
+    pub fn new(api: Arc<ApiClient>, client_id: String) -> Self {
+        Self { api, client_id }
+    }
+
+    /// 订阅服务端 SSE 事件流 (GET /file/events)
+    pub async fn subscribe_sse(&self, uri: &str) -> Result<mpsc::Receiver<RemoteFileEvent>> {
+        let (tx, rx) = mpsc::channel(256);
+
+        let api = self.api.clone();
+        let client_id = self.client_id.clone();
+        let remote_root = uri.to_string();
+
+        tokio::spawn(async move {
+            loop {
+                let token = api.token().await;
+                let base_url = api.base_url().to_string();
+
+                match Self::connect_sse(&base_url, &token, &client_id, &remote_root, &tx).await {
+                    Ok(_) => {
+                        tracing::info!("[SSE] 连接关闭，5秒后重连...");
+                    }
+                    Err(e) => {
+                        tracing::warn!("[SSE] 连接错误: {}，5秒后重连...", e);
+                    }
+                }
+
+                tokio::time::sleep(Duration::from_secs(5)).await;
+
+                if tx.is_closed() {
+                    break;
+                }
+            }
+
+            tracing::info!("[SSE] 订阅任务退出");
+        });
+
+        Ok(rx)
+    }
+
+    /// 建立 SSE 连接，使用 eventsource parser 正确解析事件
+    async fn connect_sse(
+        base_url: &str,
+        token: &str,
+        client_id: &str,
+        remote_root: &str,
+        tx: &mpsc::Sender<RemoteFileEvent>,
+    ) -> Result<()> {
+        use sse::{SseEvent, SseParseResult, sse_parse_line};
+
+        let url = format!("{}/file/events", base_url);
+
+        tracing::info!("[SSE] 正在连接: {}?uri={}", url, remote_root);
+
+        let client = reqwest::Client::new();
+        let resp = client
+            .get(&url)
+            .bearer_auth(token)
+            .header("X-Cr-Client-Id", client_id)
+            .header("Accept", "text/event-stream")
+            .header("Cache-Control", "no-cache")
+            .query(&[("uri", remote_root)])
+            .send()
+            .await?;
+
+        if !resp.status().is_success() {
+            return Err(crate::errors::SyncError::Network(
+                format!("[SSE] 连接失败: HTTP {}", resp.status()),
+            ));
+        }
+
+        tracing::info!("[SSE] 连接成功，开始监听事件 (uri={})", remote_root);
+
+        let mut stream = resp.bytes_stream();
+        use futures_util::StreamExt;
+
+        let mut line_buf = String::new();
+        let mut event = SseEvent::new();
+        let mut event_count: u64 = 0;
+
+        while let Some(chunk) = stream.next().await {
+            let chunk = chunk.map_err(|e| crate::errors::SyncError::Network(e.to_string()))?;
+            let text = String::from_utf8_lossy(&chunk);
+            line_buf.push_str(&text);
+
+            while let Some(newline_pos) = line_buf.find('\n') {
+                let line = line_buf[..=newline_pos].to_string();
+                line_buf = line_buf[newline_pos + 1..].to_string();
+
+                match sse_parse_line(&line, &mut event) {
+                    SseParseResult::Next => {}
+                    SseParseResult::Dispatch => {
+                        if event.is_empty() {
+                            event.clear();
+                            continue;
+                        }
+
+                        event_count += 1;
+                        let event_type = event.event_type.clone().unwrap_or_default();
+
+                        if event_type == "event" {
+                            let data = event.data.trim();
+                            let events: Vec<SseFileEvent> = if data.starts_with('[') {
+                                serde_json::from_str(data).unwrap_or_default()
+                            } else {
+                                serde_json::from_str(data)
+                                    .map(|e| vec![e])
+                                    .unwrap_or_else(|_| {
+                                        tracing::warn!("[SSE] 无法解析事件数据: {}", data);
+                                        Vec::new()
+                                    })
+                            };
+
+                            for ev in &events {
+                                tracing::info!(
+                                    "[SSE] 原始事件: type={}, file_id={}, from={}, to={}",
+                                    ev.event_type, ev.file_id, ev.from, ev.to
+                                );
+                                if let Some(remote_event) = Self::parse_sse_event(ev, remote_root) {
+                                    if tx.send(remote_event).await.is_err() {
+                                        return Ok(());
+                                    }
+                                }
+                            }
+                        } else if event_type == "reconnect-required" {
+                            tracing::info!("[SSE] 服务端要求重连");
+                            return Ok(());
+                        } else if event_type == "subscribed" {
+                            tracing::info!("[SSE] 订阅确认成功");
+                        } else if event_type == "keep-alive" {
+                        } else {
+                            tracing::debug!(
+                                "[SSE] 忽略未知事件: type={:?}, data={}",
+                                event.event_type,
+                                event.data.trim()
+                            );
+                        }
+
+                        event.clear();
+                    }
+                    SseParseResult::SetRetry(retry) => {
+                        tracing::debug!("[SSE] 服务端设置重试间隔: {:?}", retry);
+                    }
+                }
+            }
+        }
+
+        tracing::info!("[SSE] 流结束，共处理 {} 个事件", event_count);
+        Ok(())
+    }
+
+    /// 将 SSE 文件事件转为内部 RemoteFileEvent
+    fn parse_sse_event(ev: &SseFileEvent, remote_root: &str) -> Option<RemoteFileEvent> {
+        let full_uri = |path: &str| -> String {
+            if path.starts_with("cloudreve://") || path.starts_with("http") {
+                path.to_string()
+            } else {
+                format!("{}{}", remote_root.trim_end_matches('/'), path)
+            }
+        };
+
+        match ev.event_type.as_str() {
+            "create" | "modify" => {
+                let uri = full_uri(&ev.from);
+                Some(RemoteFileEvent::Modified(RemoteFileEntry {
+                    name: ev.from.split('/').next_back()
+                        .unwrap_or("").to_string(),
+                    path: ev.from.clone(),
+                    uri,
+                    size: 0,
+                    mtime_ms: 0,
+                    hash: None,
+                    is_dir: false,
+                    file_id: Some(ev.file_id.clone()),
+                    created_at_ms: 0,
+                }))
+            }
+            "delete" => {
+                let uri = full_uri(&ev.from);
+                Some(RemoteFileEvent::Deleted {
+                    uri,
+                    name: ev.from.split('/').next_back()
+                        .unwrap_or("").to_string(),
+                })
+            }
+            "rename" | "move" => {
+                let old_uri = full_uri(&ev.from);
+                let new_uri = full_uri(&ev.to);
+                let new_entry = RemoteFileEntry {
+                    name: ev.to.split('/').next_back()
+                        .unwrap_or("").to_string(),
+                    path: ev.to.clone(),
+                    uri: new_uri,
+                    size: 0,
+                    mtime_ms: 0,
+                    hash: None,
+                    is_dir: false,
+                    file_id: Some(ev.file_id.clone()),
+                    created_at_ms: 0,
+                };
+
+                let from_parent = ev.from.rfind('/').map(|i| &ev.from[..i]).unwrap_or("");
+                let to_parent = ev.to.rfind('/').map(|i| &ev.to[..i]).unwrap_or("");
+
+                if from_parent == to_parent {
+                    Some(RemoteFileEvent::Renamed { old_uri, new_entry })
+                } else {
+                    Some(RemoteFileEvent::Moved { old_uri, new_entry })
+                }
+            }
+            _ => {
+                tracing::debug!("[SSE] 忽略未知事件类型: {}", ev.event_type);
+                None
+            }
+        }
+    }
+}
+
+/// 事件防抖器：同一文件在 debounce_window 内的多次变更合并为一次
+pub struct EventDebouncer {
+    pending: HashMap<PathBuf, Instant>,
+    debounce_window: Duration,
+}
+
+impl EventDebouncer {
+    pub fn new(debounce_window: Duration) -> Self {
+        Self {
+            pending: HashMap::new(),
+            debounce_window,
+        }
+    }
+
+    pub fn should_process(&mut self, path: &PathBuf) -> bool {
+        let now = Instant::now();
+        if let Some(last) = self.pending.get(path) {
+            if now.duration_since(*last) < self.debounce_window {
+                self.pending.insert(path.clone(), now);
+                return false;
+            }
+        }
+        self.pending.insert(path.clone(), now);
+        true
+    }
+
+    pub fn cleanup(&mut self) {
+        let now = Instant::now();
+        self.pending.retain(|_, last| now.duration_since(*last) < self.debounce_window);
+    }
+}
+
+/// 收集时间窗口内的批量远程事件
+pub async fn batch_remote_events(
+    rx: &mut mpsc::Receiver<RemoteFileEvent>,
+    window: Duration,
+) -> Vec<RemoteFileEvent> {
+    let mut events = Vec::new();
+
+    match tokio::time::timeout(window, rx.recv()).await {
+        Ok(Some(event)) => events.push(event),
+        _ => return events,
+    }
+
+    let deadline = Instant::now() + window;
+    while Instant::now() < deadline {
+        let remaining = deadline.saturating_duration_since(Instant::now());
+        match tokio::time::timeout(remaining, rx.recv()).await {
+            Ok(Some(event)) => events.push(event),
+            _ => break,
+        }
+    }
+
+    events
+}

native/sync-core/src/event_handler/sse.rs

@@ -0,0 +1,85 @@
+use std::time::Duration;
+
+/// SSE 事件缓冲区
+#[derive(Default)]
+pub(crate) struct SseEvent {
+    pub event_type: Option<String>,
+    pub data: String,
+    pub id: Option<String>,
+}
+
+impl SseEvent {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub fn is_empty(&self) -> bool {
+        self.event_type.is_none() && self.data.is_empty()
+    }
+
+    pub fn clear(&mut self) {
+        self.event_type = None;
+        self.data.clear();
+        self.id = None;
+    }
+}
+
+pub(crate) enum SseParseResult {
+    Next,
+    Dispatch,
+    SetRetry(Duration),
+}
+
+pub(crate) fn sse_parse_line(line: &str, event: &mut SseEvent) -> SseParseResult {
+    let line = line.trim_end_matches(['\r', '\n']);
+
+    if line.is_empty() {
+        if event.is_empty() {
+            return SseParseResult::Next;
+        }
+        return SseParseResult::Dispatch;
+    }
+
+    if line.starts_with(':') {
+        return SseParseResult::Next;
+    }
+
+    let (field, value) = if let Some(colon_pos) = line.find(':') {
+        let field = &line[..colon_pos];
+        let value = line[colon_pos + 1..].strip_prefix(' ').unwrap_or(&line[colon_pos + 1..]);
+        (field, value)
+    } else {
+        (line, "")
+    };
+
+    match field {
+        "event" => event.event_type = Some(value.to_string()),
+        "data" => {
+            if !event.data.is_empty() {
+                event.data.push('\n');
+            }
+            event.data.push_str(value);
+        }
+        "id" => event.id = Some(value.to_string()),
+        "retry" => {
+            if let Ok(ms) = value.parse::<u64>() {
+                return SseParseResult::SetRetry(Duration::from_millis(ms));
+            }
+        }
+        _ => {}
+    }
+
+    SseParseResult::Next
+}
+
+/// SSE 事件中的文件变更条目
+#[derive(Debug, serde::Deserialize)]
+pub(crate) struct SseFileEvent {
+    #[serde(rename = "type")]
+    pub event_type: String,
+    pub file_id: String,
+    pub from: String,
+    #[serde(default)]
+    #[allow(dead_code)]
+    pub to: String,
+}

native/sync-core/src/event_sink.rs

@@ -0,0 +1,57 @@
+use crate::api::ffi_types::SyncEventFfi;
+use std::sync::Arc;
+use tokio::sync::Mutex;
+
+/// Rust→Dart 事件推送 — 封装 FRB StreamSink
+///
+/// **重要**: StreamSink.add() 需要 SyncEventFfi 实现 SseEncode trait，
+/// 该 trait 由 flutter_rust_bridge_codegen 自动生成。
+/// 在运行 codegen 之前，emit() 仅写日志不实际推送。
+/// 运行 codegen 后，StreamSink 可用，emit() 将实际推送到 Dart。
+pub struct EventSink {
+    sink: Arc<Mutex<Option<crate::frb_generated::StreamSink<SyncEventFfi>>>>,
+    available: std::sync::atomic::AtomicBool,
+}
+
+impl Default for EventSink {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl EventSink {
+    pub fn new() -> Self {
+        Self {
+            sink: Arc::new(Mutex::new(None)),
+            available: std::sync::atomic::AtomicBool::new(false),
+        }
+    }
+
+    /// 注册 StreamSink
+    pub async fn register(&self, sink: crate::frb_generated::StreamSink<SyncEventFfi>) {
+        self.available.store(true, std::sync::atomic::Ordering::Relaxed);
+        *self.sink.lock().await = Some(sink);
+    }
+
+    /// 推送事件到 Dart
+    pub async fn emit(&self, event: SyncEventFfi) {
+        if self.available.load(std::sync::atomic::Ordering::Relaxed) {
+            self.emit_inner(event).await;
+        }
+    }
+
+    /// 实际推送 — 仅在 StreamSink 可用时调用
+    /// 此方法在 FRB codegen 生成 SseEncode 实现后才编译通过
+    #[cfg(feature = "event_sink_enabled")]
+    async fn emit_inner(&self, event: SyncEventFfi) {
+        if let Some(sink) = self.sink.lock().await.as_ref() {
+            let _ = sink.add(event);
+        }
+    }
+
+    #[cfg(not(feature = "event_sink_enabled"))]
+    async fn emit_inner(&self, _event: SyncEventFfi) {
+        // codegen 生成前为空操作，仅写日志
+        tracing::debug!("EventSink: 事件未推送（FRB codegen 未运行）");
+    }
+}

native/sync-core/src/file_lock.rs

@@ -0,0 +1,71 @@
+use dashmap::DashMap;
+use std::sync::Arc;
+use std::sync::Weak;
+use tokio::sync::{Mutex, OwnedMutexGuard};
+
+/// 文件锁注册表 — 防止同一文件被并发操作（如上传中删除）
+pub struct FileLockRegistry {
+    locks: DashMap<String, Arc<Mutex<()>>>,
+}
+
+impl Default for FileLockRegistry {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl FileLockRegistry {
+    pub fn new() -> Self {
+        Self {
+            locks: DashMap::new(),
+        }
+    }
+
+    /// 阻塞等待获取文件锁，返回守卫
+    pub async fn acquire(&self, path: &str) -> FileLockGuard<'_> {
+        let lock = self
+            .locks
+            .entry(path.to_string())
+            .or_insert_with(|| Arc::new(Mutex::new(())))
+            .clone();
+        let guard = lock.lock_owned().await;
+        FileLockGuard {
+            registry: self,
+            path: path.to_string(),
+            _guard: guard,
+        }
+    }
+
+    /// 移除无人等待的锁条目（守卫 Drop 时调用）
+    fn cleanup_if_unused(&self, path: &str) {
+        if let Some(entry) = self.locks.get(path) {
+            if Arc::strong_count(entry.value()) == 1 {
+                drop(entry);
+                self.locks.remove(path);
+            }
+        }
+    }
+
+    /// 供外部引用计数判断
+    pub fn get_weak(&self, path: &str) -> Weak<Mutex<()>> {
+        let lock = self
+            .locks
+            .entry(path.to_string())
+            .or_insert_with(|| Arc::new(Mutex::new(())))
+            .clone();
+        Arc::downgrade(&lock)
+    }
+}
+
+/// 文件锁守卫 — Drop 时自动清理无人等待的锁条目
+pub struct FileLockGuard<'a> {
+    registry: &'a FileLockRegistry,
+    path: String,
+    _guard: OwnedMutexGuard<()>,
+}
+
+impl Drop for FileLockGuard<'_> {
+    fn drop(&mut self) {
+        self.registry.cleanup_if_unused(&self.path);
+    }
+}

native/sync-core/src/fs_scanner.rs

@@ -0,0 +1,172 @@
+use crate::errors::Result;
+use crate::models::LocalFileEntry;
+use crate::utils::quick_hash;
+#[cfg(unix)]
+use std::collections::HashSet;
+use std::path::Path;
+use walkdir::WalkDir;
+
+/// 需要跳过的文件/目录名前缀和名称
+pub const SKIP_NAMES: &[&str] = &[".DS_Store", "Thumbs.db", "desktop.ini"];
+
+/// 需要跳过的文件扩展名（同步临时文件）
+pub const SKIP_EXTENSIONS: &[&str] = &["sync_tmp", "sync_temp"];
+
+pub struct FsScanner;
+
+impl Default for FsScanner {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl FsScanner {
+    pub fn new() -> Self {
+        Self
+    }
+
+    /// 递归扫描本地目录
+    /// `compute_hash`: 是否计算文件 quick_hash（MirrorWcf 模式下可跳过以加速扫描）
+    pub async fn scan(
+        &self,
+        root: &Path,
+        depth_limit: u32,
+        follow_symlinks: bool,
+        compute_hash: bool,
+    ) -> Result<Vec<LocalFileEntry>> {
+        let mut entries = Vec::new();
+        #[cfg(unix)]
+        let mut visited_inodes: HashSet<(u64, u64)> = HashSet::new();
+
+        let walker = WalkDir::new(root)
+            .max_depth(depth_limit as usize)
+            .follow_links(follow_symlinks);
+
+        for entry in walker {
+            let entry = match entry {
+                Ok(e) => e,
+                Err(e) => {
+                    tracing::warn!("扫描跳过: {}", e);
+                    continue;
+                }
+            };
+
+            let file_name = entry.file_name().to_string_lossy();
+            let depth = entry.depth();
+            tracing::trace!(
+                "扫描: depth={}, is_dir={}, name={}",
+                depth,
+                entry.file_type().is_dir(),
+                file_name
+            );
+
+            // 符号链接处理
+            if entry.path_is_symlink() && !follow_symlinks {
+                continue;
+            }
+
+            // 跳过同步元数据文件和系统文件
+            let file_name = entry.file_name().to_string_lossy();
+            if SKIP_NAMES.iter().any(|s| file_name == *s) {
+                continue;
+            }
+            // 跳过隐藏目录/文件（以 . 开头）
+            if file_name.starts_with('.') {
+                continue;
+            }
+            if file_name.starts_with(".sync_") {
+                continue;
+            }
+            // 跳过临时文件扩展名
+            if let Some(ext) = entry.path().extension() {
+                if SKIP_EXTENSIONS.iter().any(|e| ext == *e) {
+                    continue;
+                }
+            }
+            // 跳过冲突副本文件
+            if crate::utils::is_conflict_file(&file_name) {
+                continue;
+            }
+
+            let metadata = match entry.metadata() {
+                Ok(m) => m,
+                Err(e) => {
+                    tracing::warn!("无法读取元数据 {}: {}", entry.path().display(), e);
+                    continue;
+                }
+            };
+
+            // inode 去重（防止硬链接/符号链接循环）
+            #[cfg(unix)]
+            {
+                use std::os::unix::fs::MetadataExt;
+                let key = (metadata.dev(), metadata.ino());
+                if !visited_inodes.insert(key) {
+                    continue;
+                }
+            }
+
+            let relative_path = entry
+                .path()
+                .strip_prefix(root)
+                .unwrap_or(entry.path())
+                .to_path_buf();
+
+            // 跳过根目录自身（relative_path 为空）
+            if relative_path.to_string_lossy().is_empty() {
+                continue;
+            }
+
+            if metadata.is_dir() {
+                entries.push(LocalFileEntry {
+                    relative_path,
+                    size: 0,
+                    mtime_ms: 0,
+                    quick_hash: String::new(),
+                    is_dir: true,
+                    mime_type: None,
+                });
+            } else if metadata.is_file() {
+                let size = metadata.len();
+                let mtime_ms = metadata
+                    .modified()
+                    .ok()
+                    .and_then(|t| t.duration_since(std::time::UNIX_EPOCH).ok())
+                    .map(|d| d.as_millis() as i64)
+                    .unwrap_or(0);
+
+                let hash = if compute_hash {
+                    quick_hash(entry.path(), size).await.unwrap_or_default()
+                } else {
+                    String::new()
+                };
+                let mime_type = guess_mime_type(entry.path());
+
+                entries.push(LocalFileEntry {
+                    relative_path,
+                    size,
+                    mtime_ms,
+                    quick_hash: hash,
+                    is_dir: false,
+                    mime_type,
+                });
+            }
+        }
+
+        let dirs = entries.iter().filter(|e| e.is_dir).count();
+        let files = entries.iter().filter(|e| !e.is_dir).count();
+        tracing::debug!(
+            "扫描完成: {} 个条目 ({} 目录, {} 文件)",
+            entries.len(),
+            dirs,
+            files
+        );
+
+        Ok(entries)
+    }
+}
+
+/// 根据文件扩展名推断 MIME 类型
+pub fn guess_mime_type(path: &Path) -> Option<String> {
+    mime_guess::from_path(path).first().map(|m| m.to_string())
+}

native/sync-core/src/lib.rs

@@ -0,0 +1,20 @@
+mod frb_generated; /* AUTO INJECTED BY flutter_rust_bridge. This line may not be accurate, and you can change it according to your needs. */
+pub mod api;
+pub mod models;
+pub mod errors;
+pub mod utils;
+pub mod sync_db;
+pub mod api_client;
+pub mod server_error_code;
+pub mod fs_scanner;
+pub mod conflict_resolver;
+pub mod transfer;
+pub mod event_handler;
+pub mod sync_engine;
+pub mod file_lock;
+pub mod diff;
+pub mod uploader;
+pub mod downloader;
+pub mod worker;
+pub mod event_sink;
+pub mod platform;

native/sync-core/src/models.rs

@@ -0,0 +1,669 @@
+use serde::{Deserialize, Serialize};
+use std::path::PathBuf;
+
+// ===== 同步状态 =====
+
+#[derive(Debug, Clone, PartialEq)]
+pub enum SyncState {
+    Idle,
+    Initializing,
+    InitialSync { progress: InitialSyncProgress },
+    Continuous,
+    Paused,
+    Error { message: String },
+    Stopped,
+}
+
+#[derive(Debug, Clone, Default, PartialEq)]
+pub struct InitialSyncProgress {
+    pub scanned_local: u64,
+    pub scanned_remote: u64,
+    pub uploaded: u64,
+    pub downloaded: u64,
+    pub conflicts: u64,
+    pub total_to_sync: u64,
+}
+
+// ===== 同步配置 =====
+
+#[derive(Debug, Clone)]
+pub struct SyncConfig {
+    pub base_url: String,
+    pub access_token: String,
+    pub refresh_token: String,
+    pub local_root: PathBuf,
+    pub remote_root: String,
+    pub sync_mode: SyncMode,
+    pub conflict_strategy: ConflictStrategy,
+    pub wcf_delete_mode: WcfDeleteMode,
+    pub max_concurrent_transfers: usize,
+    pub bandwidth_limit: Option<u64>,
+    pub excluded_paths: Vec<String>,
+    pub max_workers: usize,
+    pub data_dir: PathBuf,
+    pub client_id: String,
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub enum SyncMode {
+    Full,
+    UploadOnly,
+    DownloadOnly,
+    AlbumUpload,
+    AlbumDownload,
+    MirrorWcf,
+}
+
+// ===== 文件条目 =====
+
+#[derive(Debug, Clone)]
+pub struct LocalFileEntry {
+    pub relative_path: PathBuf,
+    pub size: u64,
+    pub mtime_ms: i64,
+    pub quick_hash: String,
+    pub is_dir: bool,
+    pub mime_type: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct RemoteFileEntry {
+    pub uri: String,
+    pub name: String,
+    pub size: u64,
+    pub mtime_ms: i64,
+    pub hash: Option<String>,
+    pub is_dir: bool,
+    pub file_id: Option<String>,
+    pub path: String,
+    pub created_at_ms: i64,
+}
+
+// ===== 文件映射 =====
+
+#[derive(Debug, Clone)]
+pub struct FileMapping {
+    pub id: i64,
+    pub sync_root_id: String,
+    pub local_path: PathBuf,
+    pub remote_uri: String,
+    pub remote_file_id: Option<String>,
+    pub local_hash: Option<String>,
+    pub remote_hash: Option<String>,
+    pub local_mtime: Option<i64>,
+    pub remote_mtime: Option<i64>,
+    pub local_size: Option<u64>,
+    pub remote_size: Option<u64>,
+    pub sync_status: SyncFileStatus,
+    pub is_placeholder: bool,
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub enum SyncFileStatus {
+    Synced,
+    Uploading,
+    Downloading,
+    Conflict,
+    Placeholder,
+}
+
+// ===== 冲突 =====
+
+#[derive(Debug, Clone, PartialEq)]
+pub enum ConflictType {
+    BothModified,
+    DeleteVsModify,
+    NameCollision,
+    TypeMismatch,
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub enum ConflictStrategy {
+    KeepLocal,
+    KeepRemote,
+    KeepBoth,
+    NewestWins,
+    LargestWins,
+    Manual,
+}
+
+/// 镜像同步(WCF)本地删除模式 — 仅 MirrorWcf 模式下生效
+#[derive(Debug, Clone, PartialEq)]
+pub enum WcfDeleteMode {
+    /// 仅删除本地，保留远程（可重新水合）
+    LocalOnly,
+    /// 同步删除远程副本
+    SyncRemote,
+}
+
+#[derive(Debug, Clone)]
+pub enum ConflictResolution {
+    UploadLocal,
+    DownloadRemote,
+    RenameLocal { new_name: String },
+    DeleteLocal,
+    DeleteRemote,
+    MarkManual,
+}
+
+// ===== 传输 =====
+
+#[derive(Debug, Clone)]
+pub struct TransferTask {
+    pub id: i64,
+    pub sync_root_id: String,
+    pub file_mapping_id: Option<i64>,
+    pub direction: TransferDirection,
+    pub local_path: PathBuf,
+    pub remote_uri: String,
+    pub file_size: u64,
+    pub bytes_done: u64,
+    pub status: TransferStatus,
+    pub retry_count: u32,
+    pub max_retries: u32,
+    pub error_message: Option<String>,
+    pub session_id: Option<String>,
+    pub chunk_index: Option<u32>,
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub enum TransferDirection {
+    Upload,
+    Download,
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub enum TransferStatus {
+    Pending,
+    Active,
+    Paused,
+    Completed,
+    Failed,
+}
+
+#[derive(Debug, Clone)]
+pub struct TransferConfig {
+    pub max_concurrent: usize,
+    pub max_retries: u32,
+    pub retry_base_delay_ms: u64,
+    pub retry_max_delay_ms: u64,
+    pub bandwidth_limit: Option<u64>,
+    pub disk_space_reserve: u64,
+}
+
+impl Default for TransferConfig {
+    fn default() -> Self {
+        Self {
+            max_concurrent: 3,
+            max_retries: 5,
+            retry_base_delay_ms: 1000,
+            retry_max_delay_ms: 60000,
+            bandwidth_limit: None,
+            disk_space_reserve: 1024 * 1024 * 1024,
+        }
+    }
+}
+
+// ===== 同步摘要 =====
+
+#[derive(Debug, Clone, Default)]
+pub struct SyncSummary {
+    pub uploaded: u32,
+    pub downloaded: u32,
+    pub renamed: u32,
+    pub moved: u32,
+    pub conflicts: u32,
+    pub failed: u32,
+    pub skipped: u32,
+    pub deleted_local: u32,
+    pub deleted_remote: u32,
+    pub duration_ms: u64,
+}
+
+// ===== 同步状态快照 =====
+
+#[derive(Debug, Clone)]
+pub struct SyncStatusSnapshot {
+    pub state: SyncState,
+    pub synced_files: u64,
+    pub total_files: u64,
+    pub uploading_count: u32,
+    pub downloading_count: u32,
+    pub conflict_count: u32,
+    pub error_count: u32,
+    pub last_sync_time: Option<String>,
+    pub error_message: Option<String>,
+}
+
+// ===== 本地文件事件 =====
+
+#[derive(Debug, Clone)]
+pub enum LocalFileEvent {
+    Created(Vec<PathBuf>),
+    Modified(Vec<PathBuf>),
+    Deleted(Vec<PathBuf>),
+    Renamed {
+        old_paths: Vec<PathBuf>,
+        new_paths: Vec<PathBuf>,
+    },
+    Moved {
+        old_paths: Vec<PathBuf>,
+        new_paths: Vec<PathBuf>,
+    },
+}
+
+impl LocalFileEvent {
+    pub fn paths(&self) -> &[PathBuf] {
+        match self {
+            LocalFileEvent::Created(p) => p,
+            LocalFileEvent::Modified(p) => p,
+            LocalFileEvent::Deleted(p) => p,
+            LocalFileEvent::Renamed { .. } | LocalFileEvent::Moved { .. } => &[],
+        }
+    }
+}
+
+// ===== 远程文件事件 =====
+
+#[derive(Debug, Clone)]
+pub enum RemoteFileEvent {
+    Created(RemoteFileEntry),
+    Modified(RemoteFileEntry),
+    Deleted {
+        uri: String,
+        name: String,
+    },
+    Renamed {
+        old_uri: String,
+        new_entry: RemoteFileEntry,
+    },
+    Moved {
+        old_uri: String,
+        new_entry: RemoteFileEntry,
+    },
+}
+
+// ===== 平台回调事件 (Windows CFApi) =====
+
+#[derive(Debug, Clone)]
+pub enum PlatformCallbackEvent {
+    HydrateRequested {
+        local_path: String,
+        transfer_key: i64,
+    },
+}
+
+// ===== 上传会话 =====
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct UploadSession {
+    pub session_id: String,
+    pub chunk_size: u64,
+    /// 远程存储的上传 URL 列表（每个分片一个 URL）
+    /// 仅当 storage_policy_type != "local" 时有值
+    pub upload_urls: Vec<String>,
+    /// 存储策略类型：local / onedrive / s3 / oss / cos / etc.
+    pub storage_policy_type: String,
+    /// 回调密钥（远程存储上传完成后需要回调通知服务端）
+    pub callback_secret: String,
+    /// 上传文件名（仅用于日志标识，并发时区分不同文件）
+    pub file_name: String,
+}
+
+impl UploadSession {
+    /// 是否使用远程存储直接上传（非本地策略）
+    pub fn is_remote_storage(&self) -> bool {
+        self.storage_policy_type != "local" && !self.upload_urls.is_empty()
+    }
+
+    /// 获取第 index 个分片的上传 URL
+    /// 远程存储：返回 upload_urls[index]（不足则用最后一个）
+    /// 本地存储：返回 None，由调用方拼接 /file/upload/{session_id}/{index}
+    pub fn chunk_upload_url(&self, index: usize) -> Option<&str> {
+        if !self.is_remote_storage() {
+            return None;
+        }
+        if self.upload_urls.is_empty() {
+            return None;
+        }
+        Some(self.upload_urls[index.min(self.upload_urls.len() - 1)].as_str())
+    }
+}
+
+// ===== API 分页响应 =====
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ListFilesResponse {
+    pub files: Vec<RemoteFileEntry>,
+    pub pagination: Pagination,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Pagination {
+    pub next_page_token: Option<String>,
+    pub is_cursor: bool,
+    pub total: Option<u64>,
+}
+
+// ===== 同步计划 =====
+
+/// 重命名操作（本地触发 → 远程重命名，同目录下改文件名）
+#[derive(Debug, Clone)]
+pub struct RenameAction {
+    pub old_relative_path: String,
+    pub new_relative_path: String,
+    pub remote_uri: String,
+    pub new_name: String,
+}
+
+/// 移动操作（本地触发 → 远程移动，跨目录）
+#[derive(Debug, Clone)]
+pub struct MoveAction {
+    pub old_relative_path: String,
+    pub new_relative_path: String,
+    pub remote_uri: String,
+    pub dst_remote_dir_uri: String,
+}
+
+/// 本地重命名/移动操作（远程触发 → 本地执行）
+#[derive(Debug, Clone)]
+pub struct LocalRenameAction {
+    pub old_relative_path: String,
+    pub new_relative_path: String,
+    pub new_remote_uri: String,
+}
+
+#[derive(Debug, Clone, Default)]
+pub struct SyncPlan {
+    pub uploads: Vec<SyncAction>,
+    pub downloads: Vec<SyncAction>,
+    pub delete_local: Vec<SyncAction>,
+    pub delete_remote: Vec<SyncAction>,
+    pub rename_remote: Vec<RenameAction>,
+    pub move_remote: Vec<MoveAction>,
+    pub rename_local: Vec<LocalRenameAction>,
+    pub move_local: Vec<LocalRenameAction>,
+    pub conflicts: Vec<SyncConflict>,
+    pub mkdirs_local: Vec<String>,
+    pub mkdirs_remote: Vec<String>,
+    /// 需要递归扫描的顶层目录（持续同步场景，目录整体提交给 Worker）
+    pub scan_dirs: Vec<String>,
+}
+
+impl SyncPlan {
+    /// 判断是否有实际操作需要执行（含 scan_dirs 则为非空，因为扫描可能发现新文件）
+    pub fn has_work(&self) -> bool {
+        !self.uploads.is_empty()
+            || !self.downloads.is_empty()
+            || !self.delete_local.is_empty()
+            || !self.delete_remote.is_empty()
+            || !self.rename_remote.is_empty()
+            || !self.move_remote.is_empty()
+            || !self.rename_local.is_empty()
+            || !self.move_local.is_empty()
+            || !self.conflicts.is_empty()
+            || !self.scan_dirs.is_empty()
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct SyncAction {
+    pub relative_path: String,
+    pub local_entry: Option<LocalFileEntry>,
+    pub remote_entry: Option<RemoteFileEntry>,
+    pub db_mapping: Option<FileMapping>,
+}
+
+#[derive(Debug, Clone)]
+pub struct SyncConflict {
+    pub relative_path: String,
+    pub conflict_type: ConflictType,
+    pub local_entry: Option<LocalFileEntry>,
+    pub remote_entry: Option<RemoteFileEntry>,
+    pub db_mapping: Option<FileMapping>,
+}
+
+impl SyncPlan {
+    pub fn total_actions(&self) -> u64 {
+        self.uploads.len() as u64
+            + self.downloads.len() as u64
+            + self.delete_local.len() as u64
+            + self.delete_remote.len() as u64
+            + self.rename_remote.len() as u64
+            + self.move_remote.len() as u64
+    }
+}
+
+// ===== Worker / Task 类型 =====
+
+/// Worker 配置快照 — 创建时一次性读取，运行中不读任何锁
+#[derive(Debug, Clone)]
+pub struct WorkerConfig {
+    pub local_root: PathBuf,
+    pub remote_root: String,
+    pub max_concurrent_transfers: usize,
+    pub bandwidth_limit: Option<u64>,
+    pub conflict_strategy: ConflictStrategy,
+    pub wcf_delete_mode: WcfDeleteMode,
+    pub sync_root_id: String,
+    pub sync_mode: SyncMode,
+}
+
+/// Worker 触发来源
+#[derive(Debug, Clone, PartialEq)]
+pub enum WorkerTrigger {
+    InitialSync,
+    Continuous,
+    Manual,
+    /// WCF 按需水合
+    Hydration,
+    /// WCF 远程事件（占位符/删除/重命名/移动）
+    WcfEvent,
+}
+
+impl WorkerTrigger {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            WorkerTrigger::InitialSync => "initial_sync",
+            WorkerTrigger::Continuous => "continuous",
+            WorkerTrigger::Manual => "manual",
+            WorkerTrigger::Hydration => "hydration",
+            WorkerTrigger::WcfEvent => "wcf_event",
+        }
+    }
+}
+
+/// Worker 级别状态
+#[derive(Debug, Clone, PartialEq)]
+pub enum WorkerStatus {
+    Pending,
+    Running,
+    Completed,
+    Failed,
+    Cancelled,
+}
+
+impl WorkerStatus {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            WorkerStatus::Pending => "pending",
+            WorkerStatus::Running => "running",
+            WorkerStatus::Completed => "completed",
+            WorkerStatus::Failed => "failed",
+            WorkerStatus::Cancelled => "cancelled",
+        }
+    }
+}
+
+impl std::str::FromStr for WorkerStatus {
+    type Err = ();
+
+    fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
+        match s {
+            "pending" => Ok(WorkerStatus::Pending),
+            "running" => Ok(WorkerStatus::Running),
+            "completed" => Ok(WorkerStatus::Completed),
+            "failed" => Ok(WorkerStatus::Failed),
+            "cancelled" => Ok(WorkerStatus::Cancelled),
+            _ => Err(()),
+        }
+    }
+}
+
+/// 单文件操作状态
+#[derive(Debug, Clone, PartialEq)]
+pub enum TaskItemStatus {
+    Pending,
+    Running,
+    Completed,
+    Failed,
+    Skipped,
+}
+
+impl TaskItemStatus {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            TaskItemStatus::Pending => "pending",
+            TaskItemStatus::Running => "running",
+            TaskItemStatus::Completed => "completed",
+            TaskItemStatus::Failed => "failed",
+            TaskItemStatus::Skipped => "skipped",
+        }
+    }
+}
+
+impl std::str::FromStr for TaskItemStatus {
+    type Err = ();
+
+    fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
+        match s {
+            "pending" => Ok(TaskItemStatus::Pending),
+            "running" => Ok(TaskItemStatus::Running),
+            "completed" => Ok(TaskItemStatus::Completed),
+            "failed" => Ok(TaskItemStatus::Failed),
+            "skipped" => Ok(TaskItemStatus::Skipped),
+            _ => Err(()),
+        }
+    }
+}
+
+/// 操作类型 — 精确记录每个文件的操作
+#[derive(Debug, Clone, PartialEq)]
+pub enum TaskActionType {
+    Upload,
+    Download,
+    DeleteLocal,
+    DeleteRemote,
+    Rename,
+    Move,
+    MkdirRemote,
+    MkdirLocal,
+    ConflictResolve,
+    CreatePlaceholder,
+    /// WCF 按需水合（用户打开占位符文件时触发下载）
+    Hydration,
+}
+
+impl TaskActionType {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            TaskActionType::Upload => "upload",
+            TaskActionType::Download => "download",
+            TaskActionType::DeleteLocal => "delete_local",
+            TaskActionType::DeleteRemote => "delete_remote",
+            TaskActionType::Rename => "rename",
+            TaskActionType::Move => "move",
+            TaskActionType::MkdirRemote => "mkdir_remote",
+            TaskActionType::MkdirLocal => "mkdir_local",
+            TaskActionType::ConflictResolve => "conflict_resolve",
+            TaskActionType::CreatePlaceholder => "create_placeholder",
+            TaskActionType::Hydration => "hydration",
+        }
+    }
+}
+
+impl std::str::FromStr for TaskActionType {
+    type Err = ();
+
+    fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
+        match s {
+            "upload" => Ok(TaskActionType::Upload),
+            "download" => Ok(TaskActionType::Download),
+            "delete_local" => Ok(TaskActionType::DeleteLocal),
+            "delete_remote" => Ok(TaskActionType::DeleteRemote),
+            "rename" => Ok(TaskActionType::Rename),
+            "move" => Ok(TaskActionType::Move),
+            "mkdir_remote" => Ok(TaskActionType::MkdirRemote),
+            "mkdir_local" => Ok(TaskActionType::MkdirLocal),
+            "conflict_resolve" => Ok(TaskActionType::ConflictResolve),
+            "create_placeholder" => Ok(TaskActionType::CreatePlaceholder),
+            "hydration" => Ok(TaskActionType::Hydration),
+            _ => Err(()),
+        }
+    }
+}
+
+/// Worker 级别的任务摘要 — DB 持久化，供 UI 查询
+#[derive(Debug, Clone)]
+pub struct SyncTask {
+    pub id: String,
+    pub trigger: WorkerTrigger,
+    pub total_count: u32,
+    pub completed_count: u32,
+    pub failed_count: u32,
+    pub status: WorkerStatus,
+    pub created_at: String,
+    pub updated_at: String,
+    pub finished_at: Option<String>,
+}
+
+/// 单文件操作记录 — DB 持久化，支持多维度查询
+#[derive(Debug, Clone)]
+pub struct SyncTaskItem {
+    pub id: i64,
+    pub task_id: String,
+    pub relative_path: String,
+    pub action_type: TaskActionType,
+    pub status: TaskItemStatus,
+    pub file_size: u64,
+    pub error_message: Option<String>,
+    pub created_at: String,
+    pub updated_at: String,
+}
+
+/// 累积统计（从 DB 聚合，跨所有同步任务）
+#[derive(Debug, Clone, Default)]
+pub struct SyncCumStats {
+    pub uploaded: u32,
+    pub downloaded: u32,
+    pub renamed: u32,
+    pub moved: u32,
+    pub failed: u32,
+    pub conflicts: u32,
+    pub deleted_local: u32,
+    pub deleted_remote: u32,
+    pub skipped: u32,
+}
+
+/// 任务项查询过滤器
+#[derive(Debug, Clone, Default)]
+pub struct TaskItemFilter {
+    pub task_id: Option<String>,
+    pub relative_path_contains: Option<String>,
+    pub action_type: Option<String>,
+    pub status: Option<String>,
+    pub limit: u32,
+    pub offset: u32,
+}
+
+// ===== 云端相册检查结果 =====
+
+#[derive(Debug, Clone)]
+pub struct CloudAlbumCheckResult {
+    pub dcim_exists: bool,
+    pub pictures_exists: bool,
+    pub dcim_uri: Option<String>,
+    pub pictures_uri: Option<String>,
+    pub camera_exists: bool,
+    pub camera_uri: Option<String>,
+}

native/sync-core/src/platform/mod.rs

@@ -0,0 +1,39 @@
+#[cfg(any(feature = "windows-cfapi", feature = "linux-fuse"))]
+use crate::errors::Result;
+#[cfg(any(feature = "windows-cfapi", feature = "linux-fuse"))]
+use crate::models::{LocalFileEvent, RemoteFileEntry};
+/// 平台适配器 trait — 各平台（Windows WCF / Linux FUSE / Android）实现此接口
+#[cfg(any(feature = "windows-cfapi", feature = "linux-fuse"))]
+use async_trait::async_trait;
+#[cfg(any(feature = "windows-cfapi", feature = "linux-fuse"))]
+use std::path::Path;
+#[cfg(any(feature = "windows-cfapi", feature = "linux-fuse"))]
+use tokio::sync::mpsc;
+
+#[cfg(any(feature = "windows-cfapi", feature = "linux-fuse"))]
+#[async_trait]
+pub trait PlatformAdapter: Send + Sync {
+    /// 初始同步后的平台初始化
+    async fn post_initial_sync(&self, config: &crate::models::SyncConfig) -> Result<()>;
+
+    /// 监听本地文件变化，返回事件接收器
+    fn watch_local_changes(&self) -> Result<mpsc::Receiver<LocalFileEvent>>;
+
+    /// 创建本地文件占位符（Windows）或实际文件（Linux）
+    async fn create_local_entry(&self, entry: &RemoteFileEntry, local_path: &Path) -> Result<()>;
+
+    /// 水合文件
+    async fn hydrate_file(&self, local_path: &Path, remote_url: &str) -> Result<()>;
+
+    /// 脱水文件
+    async fn dehydrate_file(&self, local_path: &Path) -> Result<()>;
+
+    /// 关闭平台监听
+    async fn shutdown(&self) -> Result<()>;
+}
+
+#[cfg(feature = "windows-cfapi")]
+pub mod wcf;
+
+#[cfg(feature = "linux-fuse")]
+pub mod fuse;

native/sync-core/src/platform/wcf.rs

@@ -0,0 +1,152 @@
+/// Windows Cloud Filter API 平台适配器
+/// 仅在 windows-cfapi feature 启用时编译
+#[cfg(feature = "windows-cfapi")]
+use std::path::Path;
+#[cfg(feature = "windows-cfapi")]
+use std::sync::Arc;
+#[cfg(feature = "windows-cfapi")]
+use tokio::sync::mpsc;
+
+#[cfg(feature = "windows-cfapi")]
+use crate::api_client::ApiClient;
+#[cfg(feature = "windows-cfapi")]
+use crate::errors::Result;
+#[cfg(feature = "windows-cfapi")]
+use crate::models::SyncConfig;
+#[cfg(feature = "windows-cfapi")]
+use crate::sync_db::SyncDb;
+#[cfg(feature = "windows-cfapi")]
+use crate::worker::PlaceholderCreator;
+
+#[cfg(feature = "windows-cfapi")]
+pub struct WcfPlatformAdapter {
+    adapter: std::sync::Mutex<sync_windows::WindowsAdapter>,
+    fetch_rx: std::sync::Mutex<Option<mpsc::Receiver<sync_windows::FetchDataRequest>>>,
+    #[allow(dead_code)]
+    db: Arc<SyncDb>,
+    #[allow(dead_code)]
+    api: Arc<ApiClient>,
+    #[allow(dead_code)]
+    config: SyncConfig,
+}
+
+#[cfg(feature = "windows-cfapi")]
+impl WcfPlatformAdapter {
+    pub fn new(
+        db: Arc<SyncDb>,
+        api: Arc<ApiClient>,
+        config: SyncConfig,
+    ) -> anyhow::Result<Self> {
+        let mut adapter = sync_windows::WindowsAdapter::new();
+
+        // 注册同步根目录
+        adapter.register_sync_root(
+            &config.local_root,
+            "Cloudreve4",
+            "1.0",
+        )?;
+
+        // 连接同步根，注册回调
+        adapter.connect_sync_root(&config.local_root)?;
+        let fetch_rx = adapter.take_callback_receiver();
+
+        tracing::info!("WcfPlatformAdapter 初始化完成: {}", config.local_root.display());
+
+        Ok(Self {
+            adapter: std::sync::Mutex::new(adapter),
+            fetch_rx: std::sync::Mutex::new(fetch_rx),
+            db,
+            api,
+            config,
+        })
+    }
+
+    /// 取走 FETCH_DATA 回调接收端（供 SyncEngine 持续同步消费）
+    pub fn take_fetch_receiver(&self) -> Option<mpsc::Receiver<sync_windows::FetchDataRequest>> {
+        self.fetch_rx.lock().unwrap().take()
+    }
+
+    /// 创建占位符文件
+    pub fn create_placeholder_for_remote(
+        &self,
+        base_dir: &Path,
+        file_name: &str,
+        file_size: u64,
+        remote_uri: &str,
+        remote_hash: Option<&str>,
+        remote_mtime_ms: i64,
+    ) -> Result<()> {
+        let file_identity = serde_json::to_vec(&serde_json::json!({
+            "uri": remote_uri,
+            "size": file_size,
+            "hash": remote_hash.unwrap_or(""),
+            "mtime_ms": remote_mtime_ms,
+        })).unwrap_or_default();
+
+        self.adapter.lock().unwrap().create_single_placeholder(
+            base_dir,
+            file_name,
+            file_size,
+            &file_identity,
+        ).map_err(|e| crate::errors::SyncError::FileSystem(e.to_string()))?;
+
+        Ok(())
+    }
+
+    /// 水合文件（按需下载）
+    pub fn hydrate_file(&self, local_path: &Path) -> Result<()> {
+        self.adapter.lock().unwrap().hydrate_placeholder(local_path)
+            .map_err(|e| crate::errors::SyncError::FileSystem(e.to_string()))
+    }
+
+    /// 脱水文件（释放本地空间）
+    pub fn dehydrate_file(&self, local_path: &Path) -> Result<()> {
+        self.adapter.lock().unwrap().dehydrate_placeholder(local_path)
+            .map_err(|e| crate::errors::SyncError::FileSystem(e.to_string()))
+    }
+
+    /// 通过 CfExecute 将数据推送回 CFApi（内核层写入，绕过文件锁）
+    pub fn fulfill_fetch_data(
+        connection_key: i64,
+        transfer_key: i64,
+        data: &[u8],
+        offset: i64,
+    ) -> Result<()> {
+        sync_windows::WindowsAdapter::fulfill_fetch_data(connection_key, transfer_key, data, offset)
+            .map_err(|e| crate::errors::SyncError::FileSystem(e.to_string()))
+    }
+
+    /// 通过 CfExecute 报告水合失败
+    pub fn reject_fetch_data(
+        connection_key: i64,
+        transfer_key: i64,
+    ) -> Result<()> {
+        sync_windows::WindowsAdapter::reject_fetch_data(connection_key, transfer_key)
+            .map_err(|e| crate::errors::SyncError::FileSystem(e.to_string()))
+    }
+
+    /// 断开连接
+    pub fn disconnect(&self) -> Result<()> {
+        self.adapter.lock().unwrap().disconnect()
+            .map_err(|e| crate::errors::SyncError::FileSystem(e.to_string()))
+    }
+}
+
+#[cfg(feature = "windows-cfapi")]
+#[async_trait::async_trait]
+impl PlaceholderCreator for WcfPlatformAdapter {
+    async fn create_placeholder_file(
+        &self,
+        base_dir: &Path,
+        file_name: String,
+        file_size: u64,
+        file_identity: &[u8],
+    ) -> Result<()> {
+        self.adapter.lock().unwrap().create_single_placeholder(
+            base_dir,
+            &file_name,
+            file_size,
+            file_identity,
+        ).map_err(|e| crate::errors::SyncError::FileSystem(e.to_string()))
+    }
+}

native/sync-core/src/server_error_code.rs

@@ -0,0 +1,92 @@
+use crate::errors::SyncError;
+
+/// Cloudreve 服务端错误码 → 中文描述映射
+pub fn server_code_desc(code: i32) -> Option<&'static str> {
+    Some(match code {
+        // HTTP 语义码
+        203 => "部分操作未成功",
+        401 => "未登录",
+        403 => "无权限访问",
+        404 => "资源不存在",
+        409 => "资源冲突",
+        // 4xxxx 业务码
+        40001 => "参数错误",
+        40002 => "上传失败",
+        40003 => "文件夹创建失败",
+        40004 => "对象已存在",
+        40005 => "签名已过期",
+        40006 => "当前存储策略不允许",
+        40007 => "用户组不允许此操作",
+        40008 => "需要管理员权限",
+        40009 => "主节点未注册",
+        40010 => "需要绑定手机",
+        40011 => "上传会话已过期",
+        40012 => "无效的分片序号",
+        40013 => "无效的 Content-Length",
+        40014 => "批量源大小超限",
+        40016 => "父目录不存在",
+        40017 => "用户被封禁",
+        40018 => "用户未激活",
+        40019 => "功能未启用",
+        40020 => "凭据无效",
+        40021 => "用户不存在",
+        40022 => "两步验证码错误",
+        40023 => "登录会话不存在",
+        40026 => "验证码错误",
+        40027 => "验证码需要刷新",
+        40035 => "存储策略不存在",
+        40044 => "文件未找到",
+        40045 => "列出文件失败",
+        40049 => "文件过大",
+        40050 => "文件类型不允许",
+        40051 => "用户容量不足",
+        40052 => "非法对象名",
+        40053 => "根目录受保护",
+        40054 => "同名文件正在上传",
+        40055 => "元数据不匹配",
+        40057 => "可用存储策略已变更",
+        40071 => "签名无效",
+        40073 => "文件锁定冲突",
+        40074 => "URI 数量过多",
+        40075 => "锁令牌已过期",
+        40077 => "实体不存在",
+        40078 => "文件在回收站中",
+        40079 => "文件数量已达上限",
+        40081 => "批量操作未完全完成",
+        40082 => "仅所有者可操作",
+        // 5xxxx 服务端内部错误
+        50001 => "数据库操作失败",
+        50002 => "加密失败",
+        50004 => "IO 操作失败",
+        50006 => "缓存操作失败",
+        50007 => "回调失败",
+        50010 => "节点离线",
+        _ => return None,
+    })
+}
+
+/// 将服务端业务错误码转为 SyncError
+pub fn api_code_to_error(code: i32, msg: &str) -> SyncError {
+    let desc = server_code_desc(code);
+    let detail = if msg.is_empty() {
+        desc.unwrap_or("未知错误").to_string()
+    } else if let Some(d) = desc {
+        if msg != d {
+            format!("{}: {}", d, msg)
+        } else {
+            msg.to_string()
+        }
+    } else {
+        msg.to_string()
+    };
+
+    match code {
+        401 => SyncError::Auth(detail),
+        40004 => SyncError::ObjectExisted,
+        40006 | 40035 | 40057 => SyncError::StoragePolicyDenied(detail),
+        40002 | 40011 | 40012 | 40013 | 40054 => SyncError::UploadFailed(detail),
+        40044 | 40077 => SyncError::FileNotFound(detail),
+        40017 | 40018 | 40007 | 40008 => SyncError::PermissionDenied(detail),
+        _ => SyncError::Network(format!("[{}] {}", code, detail)),
+    }
+}