1.3.21.3.2

.gitignore

@@ -28,6 +28,10 @@ DESIGN_OVERVIEW.md
 DESIGN.md
 refactory.md
 DESIGN-copy.md
+todo.md
+feat-2315.md
+*.txt
+*.json
 *.jsonl
 example.dart
 install.sh
@@ -58,6 +62,11 @@ lib/firebase_options.dart
 *secret*.json
 *secrets*.json
 *.local.json
+native/target
+native/logs
+sync_refactory.md
+tools/*
+*.diff
 
 # 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。
+
+---

lib/core/constants/storage_keys.dart

@@ -27,4 +27,12 @@ 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 clientId = 'client_id';
+
+  // 日志级别
+  static const String logLevel = 'app_log_level';
 }

lib/core/constants/sync_defaults.dart

@@ -0,0 +1,27 @@
+import 'dart:io';
+
+class SyncDefaults {
+  SyncDefaults._();
+
+  /// 默认同步目录
+  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 ''; // Android 使用系统相册目录
+    }
+    return '';
+  }
+
+  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';
+}

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 +1,151 @@
-/// 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',
     ];
     return imageExtensions.contains(getFileExtension(fileName));
   }
 
-  /// 判断是否为视频文件
   static bool isVideoFile(String fileName) {
-    const videoExtensions = [
-      'mp4', 'webm', 'mkv', 'avi', 'mov', 'flv', 'wmv'
-    ];
+    const videoExtensions = ['mp4', 'webm', 'mkv', 'avi', 'mov', 'flv', 'wmv'];
     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 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 = {
@@ -112,7 +173,6 @@ 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/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 +1,92 @@
+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 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/files/files_page.dart

@@ -56,7 +56,10 @@ class _FilesPageState extends State<FilesPage> {
 
     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);
@@ -67,7 +70,10 @@ class _FilesPageState extends State<FilesPage> {
           fileManager.loadFiles();
           _isFirstLoad = false;
         }
-        final downloadManager = Provider.of<DownloadManagerProvider>(context, listen: false);
+        final downloadManager = Provider.of<DownloadManagerProvider>(
+          context,
+          listen: false,
+        );
         downloadManager.initialize();
       }
     });
@@ -75,8 +81,13 @@ 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'
@@ -168,8 +179,7 @@ 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');
+            return _buildDesktopBreadcrumb(context, fileManager);
           }
           return _buildMobileBreadcrumb(context, fileManager);
         },
@@ -178,7 +188,73 @@ class _FilesPageState extends State<FilesPage> {
     );
   }
 
-  Widget _buildMobileBreadcrumb(BuildContext context, FileManagerProvider fileManager) {
+  String _decodePathSegment(String segment) {
+    return FileUtils.safeDecodePathSegment(segment);
+  }
+
+  Widget _buildDesktopBreadcrumb(
+    BuildContext context,
+    FileManagerProvider fileManager,
+  ) {
+    final theme = Theme.of(context);
+    final colorScheme = theme.colorScheme;
+    final pathParts = fileManager.currentPath.split('/');
+    pathParts.removeWhere((part) => part.isEmpty);
+
+    return Row(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        InkWell(
+          onTap: () => fileManager.currentPath != '/'
+              ? fileManager.enterFolder('/')
+              : null,
+          borderRadius: BorderRadius.circular(6),
+          child: Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 4),
+            child: Icon(LucideIcons.home, size: 18, color: colorScheme.primary),
+          ),
+        ),
+        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),
+            ),
+          ),
+          InkWell(
+            onTap: () {
+              final targetPath = '/${pathParts.sublist(0, i + 1).join('/')}';
+              if (targetPath != fileManager.currentPath) {
+                fileManager.enterFolder(targetPath);
+              }
+            },
+            borderRadius: BorderRadius.circular(6),
+            child: Padding(
+              padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 4),
+              child: Text(
+                _decodePathSegment(pathParts[i]),
+                style: TextStyle(
+                  color: i == pathParts.length - 1
+                      ? colorScheme.onSurface
+                      : colorScheme.primary,
+                  fontWeight: i == pathParts.length - 1
+                      ? FontWeight.w600
+                      : FontWeight.normal,
+                ),
+              ),
+            ),
+          ),
+        ],
+      ],
+    );
+  }
+
+  Widget _buildMobileBreadcrumb(
+    BuildContext context,
+    FileManagerProvider fileManager,
+  ) {
     final theme = Theme.of(context);
     final colorScheme = theme.colorScheme;
     final pathParts = fileManager.currentPath.split('/');
@@ -194,22 +270,30 @@ 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 +317,9 @@ 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(
@@ -267,7 +353,9 @@ 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',
           );
@@ -287,14 +375,19 @@ 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 +399,8 @@ 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',
       ),
     ];
@@ -328,7 +422,9 @@ 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',
           );
         },
       ),
@@ -380,8 +476,16 @@ 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 +495,10 @@ 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 +584,10 @@ 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 +668,8 @@ 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 +693,19 @@ 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 +735,14 @@ 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 +772,19 @@ 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!,
@@ -705,7 +835,9 @@ class _FilesPageState extends State<FilesPage> {
                 itemCount: fileManager.files.length,
                 itemBuilder: (context, index) {
                   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 +859,37 @@ 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,
+                    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),
                   );
                 },
@@ -762,7 +918,8 @@ 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;
 
@@ -802,13 +959,36 @@ 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,
+              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),
             );
           },
@@ -829,30 +1009,30 @@ class _FilesPageState extends State<FilesPage> {
             onCancel: () => fileManager.clearSelection(),
             onRename: fileManager.selectedFiles.length == 1
                 ? () => FileOperationDialogs.showRenameDialog(
-                      context,
-                      fileManager,
-                      fileManager.files.firstWhere(
-                        (f) => f.path == fileManager.selectedFiles.first,
-                      ),
-                    )
+                    context,
+                    fileManager,
+                    fileManager.files.firstWhere(
+                      (f) => f.path == fileManager.selectedFiles.first,
+                    ),
+                  )
                 : 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 +1056,17 @@ 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 +1075,10 @@ 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,

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/profile/widgets/quick_functions_section.dart

@@ -1,28 +1,67 @@
+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 isMobilePlatform =
+            defaultTargetPlatform == TargetPlatform.android ||
+            defaultTargetPlatform == TargetPlatform.iOS;
+        if (isMobilePlatform) {
+          Navigator.of(ctx).pushNamed(RouteNames.syncSettings);
+          return;
+        }
+        ctx.read<NavigationProvider>().setIndex(3);
+      },
+    ),
+    _QuickFunction(
+      icon: LucideIcons.settings,
+      label: '设置',
+      route: RouteNames.settings,
+    ),
   ];
 
   static const double _spacing = 12;
@@ -43,9 +82,12 @@ 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 +101,8 @@ 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 +113,13 @@ 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 +155,7 @@ 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交互）'),
+      (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),
+                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

@@ -16,6 +16,7 @@ import 'file_preferences_page.dart';
 import 'app_settings_page.dart';
 import 'credit_history_page.dart';
 import 'quick_access_settings_page.dart';
+import '../../../router/app_router.dart';
 
 /// 设置主页
 class SettingsPage extends StatefulWidget {
@@ -105,6 +106,12 @@ class _SettingsPageState extends State<SettingsPage> {
           _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',

lib/presentation/pages/shell/app_shell.dart

@@ -1,21 +1,44 @@
-import 'package:animations/animations.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/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:flutter/foundation.dart';
 import 'package:flutter/material.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});
 
@@ -23,7 +46,52 @@ class AppShell extends StatefulWidget {
   State<AppShell> createState() => _AppShellState();
 }
 
-class _AppShellState extends State<AppShell> with GestureHandlerMixin {
+class _AppShellState extends State<AppShell>
+    with GestureHandlerMixin, TickerProviderStateMixin {
+  final Set<int> _visitedPageIndexes = <int>{0};
+  late AnimationController _syncSpinController;
+
+  bool get _showSyncTab =>
+      defaultTargetPlatform != TargetPlatform.android &&
+      defaultTargetPlatform != TargetPlatform.iOS;
+
+  List<Widget> get _pages => _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.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),
+    );
+  }
+
+  @override
+  void dispose() {
+    _syncSpinController.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     final screenWidth = MediaQuery.of(context).size.width;
@@ -33,12 +101,19 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
       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);
@@ -57,42 +132,74 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
   }
 
   Widget _buildPageContent(BuildContext context, int currentIndex) {
-    const pages = [
-      OverviewPage(),
-      FilesPage(),
-      TasksPage(),
-      ProfilePage(),
-    ];
+    final pages = _pages;
+    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,
+              selectedIndex: _clampedIndex(navProvider.currentIndex),
               onDestinationSelected: (i) => navProvider.setIndex(i),
               destinations: [
                 const NavigationDestination(
@@ -118,6 +225,30 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
                   ),
                   label: '任务',
                 ),
+                if (_showSyncTab)
+                  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 +262,10 @@ 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 +275,16 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
       body: Row(
         children: [
           NavigationRail(
-            selectedIndex: navProvider.currentIndex,
+            selectedIndex: _clampedIndex(navProvider.currentIndex),
             onDestinationSelected: (i) => navProvider.setIndex(i),
             leading: Padding(
               padding: const EdgeInsets.symmetric(vertical: 16),
               child: GestureDetector(
-                onTap: () => navProvider.setIndex(3),
+                onTap: () => navProvider.setIndex(_pages.length - 1),
                 child: Container(
                   decoration: BoxDecoration(
                     shape: BoxShape.circle,
-                    border: navProvider.currentIndex == 3
+                    border: navProvider.currentIndex == _pages.length - 1
                         ? Border.all(
                             color: theme.colorScheme.primary,
                             width: 2.5,
@@ -180,7 +314,9 @@ 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('$activeCount'),
@@ -191,6 +327,30 @@ class _AppShellState extends State<AppShell> with GestureHandlerMixin {
                 selectedIcon: const Icon(LucideIcons.listChecks, weight: 700),
                 label: const Text('任务'),
               ),
+              if (_showSyncTab)
+                NavigationRailDestination(
+                  icon: Consumer<SyncProvider>(
+                    builder: (context, sync, _) {
+                      final count = sync.activeWorkerCount;
+                      return Badge(
+                        isLabelVisible: count > 0,
+                        label: Text('$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 +366,38 @@ 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 +411,7 @@ 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 +442,10 @@ 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 +469,9 @@ 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 +1,604 @@
+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/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: [
+              _buildStatusCard(sync, theme),
+              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 _buildStatusCard(SyncProvider sync, ThemeData theme) {
+    final isActive = sync.isActive;
+    final isPaused = sync.isPaused;
+    final hasError = sync.hasError;
+
+    Color statusColor;
+    IconData statusIcon;
+    String statusText;
+
+    if (isActive) {
+      statusColor = theme.colorScheme.primary;
+      statusIcon = Icons.sync;
+      statusText = _syncModeLabel(sync);
+    } else if (isPaused) {
+      statusColor = Colors.orange;
+      statusIcon = Icons.pause_circle_outline;
+      statusText = '已暂停';
+    } else if (hasError) {
+      statusColor = theme.colorScheme.error;
+      statusIcon = Icons.error_outline;
+      statusText = '同步错误';
+    } else if (sync.state == SyncState.stopped) {
+      statusColor = theme.disabledColor;
+      statusIcon = Icons.stop_circle_outlined;
+      statusText = '已停止';
+    } else {
+      statusColor = theme.disabledColor;
+      statusIcon = Icons.cloud_off;
+      statusText = '未启动';
+    }
+
+    return Card(
+      margin: const EdgeInsets.symmetric(horizontal: 5),
+      child: Padding(
+        padding: const EdgeInsets.all(16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Row(
+              children: [
+                Icon(statusIcon, color: statusColor, size: 28),
+                const SizedBox(width: 12),
+                Expanded(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        statusText,
+                        style: theme.textTheme.titleMedium?.copyWith(
+                          fontWeight: FontWeight.w600,
+                        ),
+                      ),
+                      if (sync.errorMessage != null)
+                        Text(
+                          sync.errorMessage!,
+                          style: theme.textTheme.bodySmall?.copyWith(
+                            color: theme.colorScheme.error,
+                          ),
+                          maxLines: 1,
+                          overflow: TextOverflow.ellipsis,
+                        ),
+                    ],
+                  ),
+                ),
+                if (sync.activeWorkerCount > 0)
+                  Badge(
+                    label: Text('${sync.activeWorkerCount}'),
+                    child: Icon(LucideIcons.loader, color: statusColor, size: 24),
+                  ),
+              ],
+            ),
+            if (isActive || isPaused) ...[
+              const SizedBox(height: 12),
+              ClipRRect(
+                borderRadius: BorderRadius.circular(4),
+                child: LinearProgressIndicator(
+                  value: sync.totalFiles > 0 ? sync.progress : null,
+                  minHeight: 6,
+                ),
+              ),
+              const SizedBox(height: 8),
+              Text(
+                sync.totalFiles > 0
+                    ? '${sync.syncedFiles} / ${sync.totalFiles} 文件'
+                    : sync.state == SyncState.continuous
+                        ? '持续同步中'
+                        : '正在同步...',
+                style: theme.textTheme.bodySmall,
+              ),
+            ],
+            if (sync.lastSummary != null) ...[
+              const SizedBox(height: 12),
+              Wrap(
+                spacing: 12,
+                runSpacing: 4,
+                children: [
+                  _summaryChip(theme, '上传', sync.lastSummary!.uploaded),
+                  _summaryChip(theme, '下载', sync.lastSummary!.downloaded),
+                  _summaryChip(theme, '冲突', sync.lastSummary!.conflicts),
+                  _summaryChip(theme, '失败', sync.lastSummary!.failed),
+                  _summaryChip(theme, '重命名', sync.lastSummary!.renamed),
+                  _summaryChip(theme, '移动', sync.lastSummary!.moved),
+                ],
+              ),
+            ],
+            const SizedBox(height: 12),
+            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 _summaryChip(ThemeData theme, String label, int value) {
+    return Row(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        Text('$label:', style: theme.textTheme.bodySmall?.copyWith(color: theme.hintColor)),
+        Text(' $value', style: theme.textTheme.bodySmall?.copyWith(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' => '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/providers/sync_provider.dart

@@ -0,0 +1,611 @@
+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;
+
+  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;
+
+  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',
+          syncMode: 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');
+    }
+  }
+
+  /// 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;
+    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;
+      _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;
+        _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;
+
+  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 (_) {}
+
+      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);
+          SyncService.instance.startContinuousSync();
+        case SyncDiskSpaceWarning():
+          AppLogger.w('磁盘空间不足');
+      }
+      notifyListeners();
+    });
+  }
+
+  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 → 清空本地目录 → 回到初始状态
+  Future<void> resetSync() async {
+    // 引擎未初始化时仅清空本地状态
+    try {
+      await SyncService.instance.resetSync();
+    } catch (_) {}
+    _state = SyncState.idle;
+    _errorMessage = null;
+    _syncedFiles = 0;
+    _totalFiles = 0;
+    _conflictCount = 0;
+    _uploadingCount = 0;
+    _downloadingCount = 0;
+    _currentFile = null;
+    _lastSummary = null;
+    _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/widgets/file_breadcrumb.dart

@@ -1,6 +1,8 @@
 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 {
   final String currentPath;
@@ -69,19 +71,7 @@ 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_info_dialog.dart

@@ -5,6 +5,7 @@ import '../../data/models/file_model.dart';
 import '../../core/utils/date_utils.dart' as date_utils;
 import '../../core/utils/file_icon_utils.dart';
 import '../../core/utils/file_type_utils.dart';
+import '../../core/utils/file_utils.dart';
 import '../../services/file_service.dart';
 import '../../router/app_router.dart';
 import 'toast_helper.dart';
@@ -91,52 +92,54 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
       child: SafeArea(
         right: false,
         child: 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)),
+          children: [
+            Container(
+              padding: const EdgeInsets.only(
+                left: 16,
+                right: 8,
+                top: 8,
+                bottom: 12,
               ),
-            ),
-            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,
+              decoration: BoxDecoration(
+                border: Border(
+                  bottom: BorderSide(
+                    color: theme.dividerColor.withValues(alpha: 0.2),
                   ),
                 ),
-                IconButton(
-                  icon: const Icon(LucideIcons.x),
-                  onPressed: () => Navigator.of(context).pop(),
-                ),
-              ],
+              ),
+              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,
+                    ),
+                  ),
+                  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),
+            ),
+          ],
         ),
       ),
     );
@@ -147,13 +150,21 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
       child: Column(
         mainAxisSize: MainAxisSize.min,
         children: [
-          Icon(LucideIcons.alertCircle, size: 48, color: theme.colorScheme.error),
+          Icon(
+            LucideIcons.alertCircle,
+            size: 48,
+            color: theme.colorScheme.error,
+          ),
           const SizedBox(height: 12),
           Text('加载失败', style: theme.textTheme.titleSmall),
           const SizedBox(height: 4),
           Padding(
             padding: const EdgeInsets.symmetric(horizontal: 24),
-            child: Text(_error ?? '', style: TextStyle(color: theme.hintColor, fontSize: 12), textAlign: TextAlign.center),
+            child: Text(
+              _error ?? '',
+              style: TextStyle(color: theme.hintColor, fontSize: 12),
+              textAlign: TextAlign.center,
+            ),
           ),
           const SizedBox(height: 12),
           FilledButton.tonal(onPressed: _loadFileInfo, child: const Text('重试')),
@@ -168,10 +179,8 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
         ? '文件夹'
         : FileIconUtils.getFileTypeLabel(file.name);
     final extendedInfo = _fileInfo?.extendedInfo;
-    final versionEntities = extendedInfo?.entities
-            ?.where((e) => e.type == 0)
-            .toList() ??
-        [];
+    final versionEntities =
+        extendedInfo?.entities?.where((e) => e.type == 0).toList() ?? [];
 
     return SingleChildScrollView(
       padding: const EdgeInsets.all(16),
@@ -198,15 +207,27 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
           const SizedBox(height: 16),
 
           // 基本信息
-          _buildInfoRow(LucideIcons.folderOpen, '位置', Uri.decodeComponent(file.relativePath)),
+          _buildInfoRow(
+            LucideIcons.folderOpen,
+            '位置',
+            FileUtils.safeDecodePathSegment(file.relativePath),
+          ),
           if (file.isFile)
             _buildInfoRow(
               LucideIcons.hardDrive,
               '大小',
               date_utils.DateUtils.formatFileSize(file.size),
             ),
-          _buildInfoRow(LucideIcons.calendarPlus, '创建时间', date_utils.DateUtils.formatDateTime(file.createdAt)),
-          _buildInfoRow(LucideIcons.calendar, '修改时间', date_utils.DateUtils.formatDateTime(file.updatedAt)),
+          _buildInfoRow(
+            LucideIcons.calendarPlus,
+            '创建时间',
+            date_utils.DateUtils.formatDateTime(file.createdAt),
+          ),
+          _buildInfoRow(
+            LucideIcons.calendar,
+            '修改时间',
+            date_utils.DateUtils.formatDateTime(file.updatedAt),
+          ),
           if (file.owned != null)
             _buildInfoRow(LucideIcons.shield, '所有者', file.owned! ? '是' : '否'),
 
@@ -215,7 +236,12 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
             const SizedBox(height: 12),
             Divider(color: theme.dividerColor.withValues(alpha: 0.3)),
             const SizedBox(height: 8),
-            Text('扩展信息', style: theme.textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w600)),
+            Text(
+              '扩展信息',
+              style: theme.textTheme.titleSmall?.copyWith(
+                fontWeight: FontWeight.w600,
+              ),
+            ),
             const SizedBox(height: 8),
             _buildInfoRow(LucideIcons.fingerprint, '文件ID', file.id),
             if (file.primaryEntity != null)
@@ -247,7 +273,12 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
             const SizedBox(height: 12),
             Divider(color: theme.dividerColor.withValues(alpha: 0.3)),
             const SizedBox(height: 8),
-            Text('文件夹信息', style: theme.textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w600)),
+            Text(
+              '文件夹信息',
+              style: theme.textTheme.titleSmall?.copyWith(
+                fontWeight: FontWeight.w600,
+              ),
+            ),
             const SizedBox(height: 8),
             _buildFolderSummary(theme, colorScheme),
           ],
@@ -270,7 +301,12 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
       children: [
         Row(
           children: [
-            Text('版本历史', style: theme.textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w600)),
+            Text(
+              '版本历史',
+              style: theme.textTheme.titleSmall?.copyWith(
+                fontWeight: FontWeight.w600,
+              ),
+            ),
             const SizedBox(width: 8),
             Container(
               padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 1),
@@ -318,7 +354,9 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
     required bool isPreviewable,
     required FileModel file,
   }) {
-    final shortId = entity.id.length > 6 ? entity.id.substring(0, 6) : entity.id;
+    final shortId = entity.id.length > 6
+        ? entity.id.substring(0, 6)
+        : entity.id;
     final createdBy = entity.createdBy?.nickname ?? '未知';
 
     return Container(
@@ -340,24 +378,32 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
               _buildVersionActionButton(
                 icon: LucideIcons.externalLink,
                 tooltip: '打开',
-                onPressed: _isVersionLoading ? null : () => _openVersion(entity),
+                onPressed: _isVersionLoading
+                    ? null
+                    : () => _openVersion(entity),
               ),
             _buildVersionActionButton(
               icon: LucideIcons.download,
               tooltip: '下载',
-              onPressed: _isVersionLoading ? null : () => _downloadVersion(entity),
+              onPressed: _isVersionLoading
+                  ? null
+                  : () => _downloadVersion(entity),
             ),
             if (!isCurrent) ...[
               _buildVersionActionButton(
                 icon: LucideIcons.pin,
                 tooltip: '设为当前版本',
-                onPressed: _isVersionLoading ? null : () => _setCurrentVersion(entity),
+                onPressed: _isVersionLoading
+                    ? null
+                    : () => _setCurrentVersion(entity),
               ),
               _buildVersionActionButton(
                 icon: LucideIcons.trash2,
                 tooltip: '删除',
                 color: colorScheme.error,
-                onPressed: _isVersionLoading ? null : () => _deleteVersion(entity),
+                onPressed: _isVersionLoading
+                    ? null
+                    : () => _deleteVersion(entity),
               ),
             ],
           ];
@@ -403,8 +449,10 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
                       const SizedBox(height: 1),
                       Text(
                         '${date_utils.DateUtils.formatDateTime(entity.createdAt)} · $createdBy',
-                        style: const TextStyle(fontSize: 11, color: null)
-                            .copyWith(color: theme.hintColor),
+                        style: const TextStyle(
+                          fontSize: 11,
+                          color: null,
+                        ).copyWith(color: theme.hintColor),
                         maxLines: 1,
                         overflow: TextOverflow.ellipsis,
                       ),
@@ -449,14 +497,26 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
             _buildInfoRow(LucideIcons.hash, 'ID', entity.id),
-            _buildInfoRow(LucideIcons.hardDrive, '大小', date_utils.DateUtils.formatFileSize(entity.size)),
-            _buildInfoRow(LucideIcons.calendarPlus, '创建时间', date_utils.DateUtils.formatDateTime(entity.createdAt)),
+            _buildInfoRow(
+              LucideIcons.hardDrive,
+              '大小',
+              date_utils.DateUtils.formatFileSize(entity.size),
+            ),
+            _buildInfoRow(
+              LucideIcons.calendarPlus,
+              '创建时间',
+              date_utils.DateUtils.formatDateTime(entity.createdAt),
+            ),
             if (createdBy != null) ...[
               _buildInfoRow(LucideIcons.user, '创建者', createdBy.nickname),
               _buildInfoRow(LucideIcons.fingerprint, '创建者ID', createdBy.id),
             ],
             if (entity.storagePolicy != null)
-              _buildInfoRow(LucideIcons.server, '存储策略', '${entity.storagePolicy!.name} (${entity.storagePolicy!.type})'),
+              _buildInfoRow(
+                LucideIcons.server,
+                '存储策略',
+                '${entity.storagePolicy!.name} (${entity.storagePolicy!.type})',
+              ),
             if (entity.encryptedWith != null)
               _buildInfoRow(LucideIcons.lock, '加密', entity.encryptedWith!),
           ],
@@ -508,9 +568,13 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
     } else if (FileTypeUtils.isAudio(file.name)) {
       Navigator.of(context).pushNamed(RouteNames.audioPreview, arguments: args);
     } else if (FileTypeUtils.isMarkdown(file.name)) {
-      Navigator.of(context).pushNamed(RouteNames.markdownPreview, arguments: args);
+      Navigator.of(
+        context,
+      ).pushNamed(RouteNames.markdownPreview, arguments: args);
     } else if (FileTypeUtils.isTextCode(file.name)) {
-      Navigator.of(context).pushNamed(RouteNames.documentPreview, arguments: args);
+      Navigator.of(
+        context,
+      ).pushNamed(RouteNames.documentPreview, arguments: args);
     }
   }
 
@@ -561,12 +625,16 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
 
   Future<void> _deleteVersion(EntityModel entity) async {
     final colorScheme = Theme.of(context).colorScheme;
-    final shortId = entity.id.length > 6 ? entity.id.substring(0, 6) : entity.id;
+    final shortId = entity.id.length > 6
+        ? entity.id.substring(0, 6)
+        : entity.id;
     final confirmed = await showDialog<bool>(
       context: context,
       builder: (dialogContext) => AlertDialog(
         title: const Text('删除版本'),
-        content: Text('确定要删除版本 "$shortId" (${date_utils.DateUtils.formatFileSize(entity.size)}) 吗？'),
+        content: Text(
+          '确定要删除版本 "$shortId" (${date_utils.DateUtils.formatFileSize(entity.size)}) 吗？',
+        ),
         actions: [
           TextButton(
             onPressed: () => Navigator.of(dialogContext).pop(false),
@@ -611,15 +679,29 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
         children: [
           _buildInfoRow(LucideIcons.file, '包含文件', '${summary.files}'),
           _buildInfoRow(LucideIcons.folder, '包含文件夹', '${summary.folders}'),
-          _buildInfoRow(LucideIcons.hardDrive, '总大小', date_utils.DateUtils.formatFileSize(summary.size)),
+          _buildInfoRow(
+            LucideIcons.hardDrive,
+            '总大小',
+            date_utils.DateUtils.formatFileSize(summary.size),
+          ),
           if (!summary.completed)
             Padding(
               padding: const EdgeInsets.only(top: 8),
               child: Row(
                 children: [
-                  Icon(LucideIcons.alertCircle, size: 14, color: theme.colorScheme.error),
+                  Icon(
+                    LucideIcons.alertCircle,
+                    size: 14,
+                    color: theme.colorScheme.error,
+                  ),
                   const SizedBox(width: 6),
-                  Text('计算未完成，结果可能不完整', style: TextStyle(fontSize: 12, color: theme.colorScheme.error)),
+                  Text(
+                    '计算未完成，结果可能不完整',
+                    style: TextStyle(
+                      fontSize: 12,
+                      color: theme.colorScheme.error,
+                    ),
+                  ),
                 ],
               ),
             ),
@@ -633,7 +715,12 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
     }
 
     return _isCalculatingFolder
-        ? const Center(child: Padding(padding: EdgeInsets.all(16), child: CircularProgressIndicator()))
+        ? const Center(
+            child: Padding(
+              padding: EdgeInsets.all(16),
+              child: CircularProgressIndicator(),
+            ),
+          )
         : SizedBox(
             width: double.infinity,
             child: OutlinedButton.icon(
@@ -655,13 +742,13 @@ class _FileInfoPanelState extends State<FileInfoPanel> {
           const SizedBox(width: 8),
           SizedBox(
             width: 72,
-            child: Text(label, style: TextStyle(fontSize: 13, color: theme.hintColor)),
+            child: Text(
+              label,
+              style: TextStyle(fontSize: 13, color: theme.hintColor),
+            ),
           ),
           Expanded(
-            child: SelectableText(
-              value,
-              style: const TextStyle(fontSize: 13),
-            ),
+            child: SelectableText(value, style: const TextStyle(fontSize: 13)),
           ),
         ],
       ),

lib/presentation/widgets/search_dialog.dart

@@ -6,6 +6,7 @@ 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';
@@ -38,7 +39,8 @@ class SearchDialog extends StatefulWidget {
           child: FadeTransition(opacity: fadeAnim, child: child),
         );
       },
-      pageBuilder: (context, animation, secondaryAnimation) => const SearchDialog(),
+      pageBuilder: (context, animation, secondaryAnimation) =>
+          const SearchDialog(),
     );
   }
 
@@ -145,8 +147,10 @@ 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;
 
@@ -286,16 +290,20 @@ 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 +324,13 @@ 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 +339,7 @@ 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 +372,21 @@ 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 +428,15 @@ 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/update_prompt.dart

@@ -0,0 +1,143 @@
+import 'dart:io';
+
+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;
+
+    _dialogVisible = true;
+    try {
+      await _showUpdateDialog(update);
+    } finally {
+      _dialogVisible = false;
+    }
+  }
+
+  Future<void> _showUpdateDialog(AppUpdateInfo update) async {
+    var downloading = false;
+    var progress = 0.0;
+    String? status;
+
+    await showDialog<void>(
+      context: context,
+      barrierDismissible: false,
+      builder: (dialogContext) {
+        return StatefulBuilder(
+          builder: (context, setDialogState) {
+            final canDownload =
+                update.downloadUrl != null &&
+                (Platform.isAndroid || Platform.isWindows);
+
+            Future<void> startUpdate() async {
+              if (downloading || !canDownload) return;
+
+              setDialogState(() {
+                downloading = true;
+                progress = 0;
+                status = '正在下载更新...';
+              });
+
+              try {
+                final file = await UpdateService.instance.downloadUpdate(
+                  update,
+                  onProgress: (received, total) {
+                    if (!mounted || total <= 0) return;
+                    setDialogState(() {
+                      progress = received / total;
+                    });
+                  },
+                );
+                if (file == null) return;
+
+                setDialogState(() {
+                  progress = 1;
+                  status = '下载完成，正在打开安装包...';
+                });
+                await UpdateService.instance.openInstaller(file);
+                if (dialogContext.mounted) Navigator.of(dialogContext).pop();
+              } catch (e) {
+                setDialogState(() {
+                  downloading = false;
+                  status = '下载或打开安装包失败';
+                });
+                ToastHelper.failure('更新失败: $e');
+              }
+            }
+
+            return AlertDialog(
+              title: Text('发现新版本 ${update.version}'),
+              content: ConstrainedBox(
+                constraints: const BoxConstraints(maxWidth: 420),
+                child: Column(
+                  mainAxisSize: MainAxisSize.min,
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(update.title),
+                    if ((update.description ?? '').isNotEmpty) ...[
+                      const SizedBox(height: 12),
+                      Text(
+                        update.description!,
+                        maxLines: 6,
+                        overflow: TextOverflow.ellipsis,
+                      ),
+                    ],
+                    if (downloading) ...[
+                      const SizedBox(height: 16),
+                      LinearProgressIndicator(
+                        value: progress == 0 ? null : progress,
+                      ),
+                      const SizedBox(height: 8),
+                      Text(status ?? ''),
+                    ],
+                  ],
+                ),
+              ),
+              actions: [
+                TextButton(
+                  onPressed: downloading
+                      ? null
+                      : () => Navigator.of(dialogContext).pop(),
+                  child: const Text('稍后'),
+                ),
+                FilledButton(
+                  onPressed: downloading ? null : startUpdate,
+                  child: const Text('立即更新'),
+                ),
+              ],
+            );
+          },
+        );
+      },
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) => widget.child;
+}

lib/router/app_router.dart

@@ -7,6 +7,7 @@ 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_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';
@@ -35,6 +36,7 @@ class RouteNames {
   static const String documentPreview = '/document-preview';
   static const String markdownPreview = '/markdown-preview';
   static const String categoryFiles = '/category-files';
+  static const String syncSettings = '/sync-settings';
 }
 
 /// 应用路由
@@ -218,6 +220,12 @@ class AppRouter {
           ),
         );
 
+      case RouteNames.syncSettings:
+        return MaterialPageRoute(
+          settings: settings,
+          builder: (context) => const SyncSettingsPage(),
+        );
+
       default:
         return MaterialPageRoute(
           settings: settings,

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';
 
@@ -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);
       },
     );

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/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';
 
@@ -149,4 +150,55 @@ 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);
+  }
+
+  // ===== 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 +1,248 @@
+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;
+
+  /// 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;
+    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();
+  }
+
+  // ========== 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}');
+    return {
+      'dcimExists': result.dcimExists,
+      'picturesExists': result.picturesExists,
+      'dcimUri': result.dcimUri,
+      'picturesUri': result.picturesUri,
+    };
+  }
+
+  /// 创建云端相册目录 (Android)
+  Future<void> createCloudAlbumDirs(String baseUri) async {
+    AppLogger.d('[FFI] → createCloudAlbumDirs: uri=$baseUri');
+    await ffi.createCloudAlbumDirs(baseUri: baseUri);
+    AppLogger.d('[FFI] ← createCloudAlbumDirs: ok');
+  }
+
+  /// 销毁同步引擎
+  Future<void> dispose() async {
+    AppLogger.d('[FFI] → disposeSyncEngine');
+    await _eventController.close();
+    await ffi.disposeSyncEngine();
+    _initialized = false;
+    AppLogger.d('[FFI] ← disposeSyncEngine: ok');
+  }
+
+  /// 热修改日志级别（立即生效，无需重启）
+  Future<void> setLogLevel(String level) async {
+    AppLogger.d('[FFI] → setSyncLogLevel: level=$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() async {
+    AppLogger.d('[FFI] → resetSync');
+    await ffi.resetSync();
+    AppLogger.d('[FFI] ← resetSync: ok');
+  }
+}

lib/services/update_service.dart

@@ -0,0 +1,368 @@
+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/utils/app_logger.dart';
+import '../data/models/app_update_model.dart';
+
+class UpdateService {
+  UpdateService._();
+
+  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',
+  );
+
+  final Dio _dio = Dio(
+    BaseOptions(
+      connectTimeout: const Duration(seconds: 12),
+      receiveTimeout: const Duration(seconds: 20),
+      followRedirects: true,
+      responseType: ResponseType.plain,
+    ),
+  );
+
+  bool _checking = false;
+
+  Future<AppUpdateInfo?> checkForUpdate() async {
+    if (_checking) return null;
+    if (!_supportsAutoDownload) return null;
+
+    _checking = true;
+    try {
+      final current = await PackageInfo.fromPlatform();
+      final latest = await _fetchLatestRelease(currentVersion: current.version);
+      if (latest == null) return null;
+      if (_compareVersions(latest.version, current.version) <= 0) return null;
+      return latest;
+    } catch (e, stackTrace) {
+      AppLogger.e('检查更新失败: $e\n$stackTrace');
+      return null;
+    } finally {
+      _checking = false;
+    }
+  }
+
+  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: $url');
+    }
+  }
+
+  Future<AppUpdateInfo?> _fetchLatestRelease({String? currentVersion}) async {
+    final response = await _dio.getUri<String>(releasesRssUrl);
+    final body = response.data;
+    if (body == null || body.trim().isEmpty) return null;
+
+    final document = XmlDocument.parse(body);
+    final items = document.findAllElements('item').toList();
+    if (items.isEmpty) return null;
+
+    final releases =
+        items.map(_releaseFromRssItem).whereType<_RssRelease>().toList()
+          ..sort(_compareRssReleaseDesc);
+    if (releases.isEmpty) return null;
+
+    for (final release in releases) {
+      if (currentVersion != null &&
+          _compareVersions(release.version, currentVersion) <= 0) {
+        continue;
+      }
+
+      final update = await _buildUpdateInfo(release);
+      if (update == null) continue;
+
+      if (update.downloadUrl == null) continue;
+      return update;
+    }
+
+    return null;
+  }
+
+  _RssRelease? _releaseFromRssItem(XmlElement item) {
+    final title = _elementText(item, 'title') ?? '';
+    final link = _elementText(item, 'link') ?? releasesPageUrl.toString();
+    final description = _elementText(item, 'description');
+    final content = _elementText(item, 'encoded');
+    final enclosure = item
+        .findElements('enclosure')
+        .map((e) => e.getAttribute('url'))
+        .whereType<String>()
+        .map(_absoluteUriOrNull)
+        .whereType<Uri>()
+        .toList();
+
+    final candidates = <Uri>[
+      ...enclosure,
+      ..._extractLinks(description ?? ''),
+      ..._extractLinks(content ?? ''),
+      ..._extractLinks(item.toXmlString()),
+    ];
+
+    final pageUrl = _absoluteUriOrNull(link) ?? releasesPageUrl;
+    final version = _versionFromText(
+      '$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 get _supportsAutoDownload => Platform.isAndroid || Platform.isWindows;
+
+  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);
+  }
+
+  @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 +1,114 @@
+// 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 → 清空本地目录 → 回到初始状态
+Future<void> resetSync() => RustSyncApi.instance.api.crateApiFfiResetSync();
+
+/// 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);

lib/src/rust/api/ffi_types.dart

@@ -0,0 +1,450 @@
+// 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`, `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;
+
+  const CloudAlbumCheckResultFfi({
+    required this.dcimExists,
+    required this.picturesExists,
+    this.dcimUri,
+    this.picturesUri,
+  });
+
+  @override
+  int get hashCode =>
+      dcimExists.hashCode ^
+      picturesExists.hashCode ^
+      dcimUri.hashCode ^
+      picturesUri.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;
+}
+
+/// 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;
+}
+
+@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 +1,328 @@
+// 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
+  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
+  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_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 +1,328 @@
+// 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
+  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
+  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_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 +126,36 @@ 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 "${RUST_TARGET_DIR}"
+        COMMENT "Building Rust sync engine..."
+    )
+
+    add_custom_target(sync_core_build DEPENDS "${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()

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: D:/flutter_projects/cloudreve4_flutter/lib/src/rust/
+dart_entrypoint_class_name: RustSyncApi
+dart_enums_style: true

native/sync-android/Cargo.toml

@@ -0,0 +1,16 @@
+[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"

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 +1,83 @@
+[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 }
+
+# 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 }
+
+[target.'cfg(target_os = "android")'.dependencies]
+sync-android = { path = "../sync-android", optional = true }
+jni = { version = "0.21", optional = true }
+
+[features]
+default = []
+windows-cfapi = ["sync-windows", "windows"]
+linux-notify = ["sync-linux"]
+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 +1,622 @@
+use flutter_rust_bridge::frb;
+use std::sync::Arc;
+
+use crate::api::ffi_types::*;
+use crate::sync_engine::SyncEngine;
+
+/// 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" => SyncMode::Album,
+        "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::Album => "album",
+        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,
+    }
+}
+
+/// 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());
+    }
+
+    // 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);
+
+        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);
+
+    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();
+    }
+
+    tracing::info!("同步引擎已停止");
+    Ok(())
+}
+
+/// 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
+#[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();
+    }
+    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 → 清空本地目录 → 回到初始状态
+#[frb]
+pub async fn reset_sync() -> Result<(), SyncErrorFfi> {
+    tracing::debug!("[FFI] reset_sync ←");
+    let engine = get_engine()?;
+    engine.reset_sync().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();
+    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()?;
+    // 使用 tokio runtime 注册
+    let rt = tokio::runtime::Handle::current();
+    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())
+}
+
+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 +1,164 @@
+/// 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>,
+}
+
+/// 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,
+}
+
+/// 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 +1,635 @@
+use crate::errors::{Result, SyncError};
+use crate::models::*;
+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 == 401 {
+            return Err(SyncError::Auth("Login required".into()));
+        }
+        if api_resp.code == 40004 {
+            return Err(SyncError::ObjectExisted);
+        }
+        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 });
+        }
+        if api_resp.code != 0 {
+            return Err(SyncError::Network(
+                api_resp.msg.unwrap_or_else(|| format!("错误码: {}", api_resp.code)),
+            ));
+        }
+        Ok(api_resp.data.unwrap_or_default())
+    }
+
+    /// 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 = request_builder(token)
+            .header("X-Cr-Client-Id", &client_id)
+            .send().await?;
+        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 = request_builder(new_token)
+                .header("X-Cr-Client-Id", &client_id)
+                .send().await?;
+            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 {
+                self.list_all_files_recursive(&dir_uri, result).await?;
+            }
+
+            Ok(())
+        })
+    }
+
+    pub async fn list_files_page(
+        &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);
+
+        Ok(UploadSession {
+            session_id,
+            chunk_size,
+        })
+    }
+
+    pub async fn upload_chunk(
+        &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(())
+    }
+
+    // ===== 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 +1,204 @@
+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 和 MirrorWcf）
+            (Some(l), None, _) => {
+                if matches!(sync_mode, SyncMode::DownloadOnly) {
+                    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 和 MirrorWcf）
+            (None, Some(r), _) => {
+                if matches!(sync_mode, SyncMode::UploadOnly) {
+                    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 和 MirrorWcf）
+    if !matches!(sync_mode, SyncMode::DownloadOnly) {
+        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 => {
+                // 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 => {
+                // 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 +1,82 @@
+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("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 {
+        SyncError::Network(e.to_string())
+    }
+}
+
+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 +1,156 @@
+#[cfg(unix)]
+use std::collections::HashSet;
+use crate::errors::Result;
+use crate::models::LocalFileEntry;
+use crate::utils::quick_hash;
+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;
+                }
+            };
+
+            // 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;
+            }
+            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,
+                });
+            }
+        }
+
+        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 +1,19 @@
+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 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 +1,601 @@
+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,
+    Album,
+    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,
+}
+
+// ===== 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,
+}
+
+impl WorkerTrigger {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            WorkerTrigger::InitialSync => "initial_sync",
+            WorkerTrigger::Continuous => "continuous",
+            WorkerTrigger::Manual => "manual",
+        }
+    }
+}
+
+/// 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,
+}
+
+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",
+        }
+    }
+
+}
+
+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),
+            _ => 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,
+}
+
+/// 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>,
+}

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

@@ -0,0 +1,36 @@
+/// 平台适配器 trait — 各平台（Windows WCF / Linux / Android）实现此接口
+#[cfg(feature = "windows-cfapi")]
+use async_trait::async_trait;
+#[cfg(feature = "windows-cfapi")]
+use crate::errors::Result;
+#[cfg(feature = "windows-cfapi")]
+use crate::models::{LocalFileEvent, RemoteFileEntry};
+#[cfg(feature = "windows-cfapi")]
+use std::path::Path;
+#[cfg(feature = "windows-cfapi")]
+use tokio::sync::mpsc;
+
+#[cfg(feature = "windows-cfapi")]
+#[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;

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/sync_db.rs

@@ -0,0 +1,972 @@
+use r2d2::CustomizeConnection;
+use r2d2_sqlite::SqliteConnectionManager;
+use rusqlite::Connection;
+use std::path::Path;
+use tokio::sync::Mutex;
+
+use crate::errors::Result;
+use crate::models::*;
+
+pub struct SyncDb {
+    write_conn: Mutex<Connection>,
+    read_pool: r2d2::Pool<SqliteConnectionManager>,
+}
+
+#[derive(Debug)]
+struct SyncDbConnectionCustomizer;
+
+impl CustomizeConnection<Connection, rusqlite::Error> for SyncDbConnectionCustomizer {
+    fn on_acquire(&self, conn: &mut Connection) -> std::result::Result<(), rusqlite::Error> {
+        conn.execute_batch(
+            "PRAGMA journal_mode=WAL;
+             PRAGMA busy_timeout=5000;
+             PRAGMA synchronous=NORMAL;",
+        )?;
+        Ok(())
+    }
+}
+
+impl SyncDb {
+    pub fn read_pool(&self) -> r2d2::Pool<SqliteConnectionManager> {
+        self.read_pool.clone()
+    }
+
+    pub fn open(db_path: &Path) -> Result<Self> {
+        if let Some(parent) = db_path.parent() {
+            std::fs::create_dir_all(parent)?;
+        }
+
+        let write_conn = Connection::open(db_path)?;
+        write_conn.execute_batch(
+            "PRAGMA journal_mode=WAL;
+             PRAGMA busy_timeout=5000;
+             PRAGMA synchronous=NORMAL;
+             PRAGMA foreign_keys=ON;
+             PRAGMA temp_store=MEMORY;",
+        )?;
+
+        Self::run_migrations(&write_conn)?;
+
+        let manager = SqliteConnectionManager::file(db_path);
+        let read_pool = r2d2::Pool::builder()
+            .max_size(4)
+            .connection_customizer(Box::new(SyncDbConnectionCustomizer))
+            .build(manager)?;
+
+        Ok(Self {
+            write_conn: Mutex::new(write_conn),
+            read_pool,
+        })
+    }
+
+    fn run_migrations(conn: &Connection) -> Result<()> {
+        conn.execute_batch(
+            "CREATE TABLE IF NOT EXISTS sync_root (
+                id              TEXT PRIMARY KEY,
+                local_path      TEXT NOT NULL UNIQUE,
+                remote_uri      TEXT NOT NULL,
+                sync_mode       TEXT NOT NULL DEFAULT 'full',
+                enabled         INTEGER NOT NULL DEFAULT 1,
+                created_at      TEXT NOT NULL,
+                updated_at      TEXT NOT NULL
+            );
+
+            CREATE TABLE IF NOT EXISTS file_mapping (
+                id              INTEGER PRIMARY KEY AUTOINCREMENT,
+                sync_root_id    TEXT NOT NULL REFERENCES sync_root(id),
+                local_path      TEXT NOT NULL,
+                remote_uri      TEXT NOT NULL,
+                remote_file_id  TEXT,
+                local_hash      TEXT,
+                remote_hash     TEXT,
+                local_mtime     INTEGER,
+                remote_mtime    INTEGER,
+                local_size      INTEGER,
+                remote_size     INTEGER,
+                sync_status     TEXT NOT NULL DEFAULT 'synced',
+                is_placeholder  INTEGER NOT NULL DEFAULT 0,
+                updated_at      TEXT NOT NULL,
+                UNIQUE(sync_root_id, local_path)
+            );
+
+            CREATE INDEX IF NOT EXISTS idx_file_mapping_remote ON file_mapping(sync_root_id, remote_uri);
+            CREATE INDEX IF NOT EXISTS idx_file_mapping_status ON file_mapping(sync_status);
+
+            CREATE TABLE IF NOT EXISTS conflict (
+                id              INTEGER PRIMARY KEY AUTOINCREMENT,
+                sync_root_id    TEXT NOT NULL REFERENCES sync_root(id),
+                local_path      TEXT NOT NULL,
+                conflict_type   TEXT NOT NULL,
+                resolution      TEXT,
+                local_hash      TEXT,
+                remote_hash     TEXT,
+                created_at      TEXT NOT NULL,
+                resolved_at     TEXT
+            );
+
+            CREATE TABLE IF NOT EXISTS transfer_queue (
+                id              INTEGER PRIMARY KEY AUTOINCREMENT,
+                sync_root_id    TEXT NOT NULL REFERENCES sync_root(id),
+                file_mapping_id INTEGER REFERENCES file_mapping(id),
+                direction       TEXT NOT NULL,
+                local_path      TEXT NOT NULL,
+                remote_uri      TEXT NOT NULL,
+                file_size       INTEGER NOT NULL,
+                bytes_done      INTEGER NOT NULL DEFAULT 0,
+                status          TEXT NOT NULL DEFAULT 'pending',
+                retry_count     INTEGER NOT NULL DEFAULT 0,
+                max_retries     INTEGER NOT NULL DEFAULT 5,
+                error_message   TEXT,
+                session_id      TEXT,
+                chunk_index     INTEGER,
+                created_at      TEXT NOT NULL,
+                updated_at      TEXT NOT NULL
+            );
+
+            CREATE INDEX IF NOT EXISTS idx_transfer_status ON transfer_queue(status);
+
+            CREATE TABLE IF NOT EXISTS sync_log (
+                id              INTEGER PRIMARY KEY AUTOINCREMENT,
+                sync_root_id    TEXT NOT NULL,
+                event_type      TEXT NOT NULL,
+                details         TEXT,
+                created_at      TEXT NOT NULL
+            );
+
+            CREATE TABLE IF NOT EXISTS album_sync_record (
+                id              INTEGER PRIMARY KEY AUTOINCREMENT,
+                local_path      TEXT NOT NULL UNIQUE,
+                remote_uri      TEXT NOT NULL,
+                file_hash       TEXT,
+                synced_at       TEXT NOT NULL
+            );
+
+            CREATE TABLE IF NOT EXISTS sync_task (
+                id              TEXT PRIMARY KEY,
+                trigger         TEXT NOT NULL,
+                total_count     INTEGER NOT NULL DEFAULT 0,
+                completed_count INTEGER NOT NULL DEFAULT 0,
+                failed_count    INTEGER NOT NULL DEFAULT 0,
+                status          TEXT NOT NULL DEFAULT 'pending',
+                created_at      TEXT NOT NULL,
+                updated_at      TEXT NOT NULL,
+                finished_at     TEXT
+            );
+
+            CREATE TABLE IF NOT EXISTS sync_task_item (
+                id              INTEGER PRIMARY KEY AUTOINCREMENT,
+                task_id         TEXT NOT NULL REFERENCES sync_task(id),
+                relative_path   TEXT NOT NULL,
+                action_type     TEXT NOT NULL,
+                status          TEXT NOT NULL DEFAULT 'pending',
+                file_size       INTEGER NOT NULL DEFAULT 0,
+                error_message   TEXT,
+                created_at      TEXT NOT NULL,
+                updated_at      TEXT NOT NULL
+            );
+
+            CREATE INDEX IF NOT EXISTS idx_task_item_task ON sync_task_item(task_id);
+            CREATE INDEX IF NOT EXISTS idx_task_item_path ON sync_task_item(relative_path);
+            CREATE INDEX IF NOT EXISTS idx_task_item_action ON sync_task_item(action_type);
+            CREATE INDEX IF NOT EXISTS idx_task_item_status ON sync_task_item(status);
+            CREATE INDEX IF NOT EXISTS idx_task_status ON sync_task(status);",
+        )?;
+
+        // 添加 task_item 唯一索引（去重：保留 id 最小的记录）
+        // 先清理重复数据，再建唯一索引
+        let existing: Vec<String> = conn
+            .prepare("SELECT name FROM sqlite_master WHERE type='index' AND name='idx_task_item_unique'")?
+            .query_map([], |r| r.get(0))?
+            .filter_map(|r| r.ok())
+            .collect();
+        if existing.is_empty() {
+            conn.execute_batch(
+                "DELETE FROM sync_task_item WHERE id NOT IN (
+                    SELECT MIN(id) FROM sync_task_item GROUP BY task_id, relative_path, action_type
+                );
+                CREATE UNIQUE INDEX idx_task_item_unique ON sync_task_item(task_id, relative_path, action_type);"
+            )?;
+        }
+
+        Ok(())
+    }
+
+    // ===== sync_root 操作 =====
+
+    pub async fn upsert_sync_root(&self, root: &SyncConfig) -> Result<String> {
+        let local_path = root.local_root.to_string_lossy().to_string();
+        let now = chrono::Utc::now().to_rfc3339();
+        let sync_mode = match root.sync_mode {
+            SyncMode::Full => "full",
+            SyncMode::UploadOnly => "upload_only",
+            SyncMode::DownloadOnly => "download_only",
+            SyncMode::Album => "album",
+            SyncMode::MirrorWcf => "mirror_wcf",
+        };
+
+        let conn = self.write_conn.lock().await;
+
+        // 先查找是否已存在
+        let existing_id: Option<String> = conn
+            .query_row(
+                "SELECT id FROM sync_root WHERE local_path = ?1",
+                rusqlite::params![local_path],
+                |row| row.get(0),
+            )
+            .ok();
+
+        if let Some(id) = existing_id {
+            // 更新已有记录，保留 id 和 created_at
+            conn.execute(
+                "UPDATE sync_root SET remote_uri = ?1, sync_mode = ?2, updated_at = ?3 WHERE id = ?4",
+                rusqlite::params![root.remote_root, sync_mode, now, id],
+            )?;
+            Ok(id)
+        } else {
+            // 新建记录
+            let id = uuid::Uuid::new_v4().to_string();
+            conn.execute(
+                "INSERT INTO sync_root (id, local_path, remote_uri, sync_mode, enabled, created_at, updated_at)
+                 VALUES (?1, ?2, ?3, ?4, 1, ?5, ?5)",
+                rusqlite::params![id, local_path, root.remote_root, sync_mode, now],
+            )?;
+            Ok(id)
+        }
+    }
+
+    // ===== file_mapping 操作 =====
+
+    pub async fn get_file_mapping(
+        &self,
+        sync_root_id: &str,
+        local_path: &str,
+    ) -> Result<Option<FileMapping>> {
+        let pool = self.read_pool.clone();
+        let sync_root_id = sync_root_id.to_string();
+        let local_path = local_path.to_string();
+
+        let result = tokio::task::spawn_blocking(move || -> Result<Option<FileMapping>> {
+            let conn = pool.get()?;
+            let mut stmt = conn.prepare(
+                "SELECT id, sync_root_id, local_path, remote_uri, remote_file_id,
+                        local_hash, remote_hash, local_mtime, remote_mtime,
+                        local_size, remote_size, sync_status, is_placeholder
+                 FROM file_mapping WHERE sync_root_id = ?1 AND local_path = ?2",
+            )?;
+
+            let mapping = stmt
+                .query_row(rusqlite::params![sync_root_id, local_path], |row| {
+                    Ok(FileMapping {
+                        id: row.get(0)?,
+                        sync_root_id: row.get(1)?,
+                        local_path: std::path::PathBuf::from(row.get::<_, String>(2)?),
+                        remote_uri: row.get(3)?,
+                        remote_file_id: row.get(4)?,
+                        local_hash: row.get(5)?,
+                        remote_hash: row.get(6)?,
+                        local_mtime: row.get(7)?,
+                        remote_mtime: row.get(8)?,
+                        local_size: row.get(9)?,
+                        remote_size: row.get(10)?,
+                        sync_status: parse_sync_status(&row.get::<_, String>(11)?),
+                        is_placeholder: row.get::<_, i32>(12)? != 0,
+                    })
+                })
+                .ok();
+
+            Ok(mapping)
+        })
+        .await??;
+
+        Ok(result)
+    }
+
+    /// 通过远程 URI 查找文件映射（WCF 水合时使用）
+    pub async fn find_mapping_by_remote_uri(
+        &self,
+        sync_root_id: &str,
+        remote_uri: &str,
+    ) -> Result<Option<FileMapping>> {
+        let pool = self.read_pool.clone();
+        let sync_root_id = sync_root_id.to_string();
+        let remote_uri = remote_uri.to_string();
+
+        let result = tokio::task::spawn_blocking(move || -> Result<Option<FileMapping>> {
+            let conn = pool.get()?;
+            let mut stmt = conn.prepare(
+                "SELECT id, sync_root_id, local_path, remote_uri, remote_file_id,
+                        local_hash, remote_hash, local_mtime, remote_mtime,
+                        local_size, remote_size, sync_status, is_placeholder
+                 FROM file_mapping WHERE sync_root_id = ?1 AND remote_uri = ?2",
+            )?;
+
+            let mapping = stmt
+                .query_row(rusqlite::params![sync_root_id, remote_uri], |row| {
+                    Ok(FileMapping {
+                        id: row.get(0)?,
+                        sync_root_id: row.get(1)?,
+                        local_path: std::path::PathBuf::from(row.get::<_, String>(2)?),
+                        remote_uri: row.get(3)?,
+                        remote_file_id: row.get(4)?,
+                        local_hash: row.get(5)?,
+                        remote_hash: row.get(6)?,
+                        local_mtime: row.get(7)?,
+                        remote_mtime: row.get(8)?,
+                        local_size: row.get(9)?,
+                        remote_size: row.get(10)?,
+                        sync_status: parse_sync_status(&row.get::<_, String>(11)?),
+                        is_placeholder: row.get::<_, i32>(12)? != 0,
+                    })
+                })
+                .ok();
+
+            Ok(mapping)
+        })
+        .await??;
+
+        Ok(result)
+    }
+
+    /// 查询所有占位符文件映射（用于 WCF 退出时清理）
+    #[cfg(feature = "windows-cfapi")]
+    pub async fn list_placeholder_mappings(
+        &self,
+        sync_root_id: &str,
+    ) -> Result<Vec<FileMapping>> {
+        let pool = self.read_pool.clone();
+        let sync_root_id = sync_root_id.to_string();
+
+        let result = tokio::task::spawn_blocking(move || -> Result<Vec<FileMapping>> {
+            let conn = pool.get()?;
+            let mut stmt = conn.prepare(
+                "SELECT id, sync_root_id, local_path, remote_uri, remote_file_id,
+                        local_hash, remote_hash, local_mtime, remote_mtime,
+                        local_size, remote_size, sync_status, is_placeholder
+                 FROM file_mapping WHERE sync_root_id = ?1 AND is_placeholder = 1",
+            )?;
+
+            let mappings = stmt.query_map(rusqlite::params![sync_root_id], |row| {
+                Ok(FileMapping {
+                    id: row.get(0)?,
+                    sync_root_id: row.get(1)?,
+                    local_path: std::path::PathBuf::from(row.get::<_, String>(2)?),
+                    remote_uri: row.get(3)?,
+                    remote_file_id: row.get(4)?,
+                    local_hash: row.get(5)?,
+                    remote_hash: row.get(6)?,
+                    local_mtime: row.get(7)?,
+                    remote_mtime: row.get(8)?,
+                    local_size: row.get(9)?,
+                    remote_size: row.get(10)?,
+                    sync_status: parse_sync_status(&row.get::<_, String>(11)?),
+                    is_placeholder: row.get::<_, i32>(12)? != 0,
+                })
+            })?.filter_map(|m| m.ok()).collect();
+
+            Ok(mappings)
+        }).await??;
+
+        Ok(result)
+    }
+
+    pub async fn upsert_file_mapping(&self, mapping: &FileMapping) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        let status_str = sync_status_str(&mapping.sync_status);
+        let local_path = crate::utils::normalize_path(&mapping.local_path.to_string_lossy());
+        let is_placeholder = if mapping.is_placeholder { 1 } else { 0 };
+
+        conn.execute(
+            "INSERT OR REPLACE INTO file_mapping
+             (sync_root_id, local_path, remote_uri, remote_file_id,
+              local_hash, remote_hash, local_mtime, remote_mtime,
+              local_size, remote_size, sync_status, is_placeholder, updated_at)
+             VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10, ?11, ?12, ?13)",
+            rusqlite::params![
+                mapping.sync_root_id,
+                local_path,
+                mapping.remote_uri,
+                mapping.remote_file_id,
+                mapping.local_hash,
+                mapping.remote_hash,
+                mapping.local_mtime,
+                mapping.remote_mtime,
+                mapping.local_size,
+                mapping.remote_size,
+                status_str,
+                is_placeholder,
+                now,
+            ],
+        )?;
+        Ok(())
+    }
+
+    pub async fn delete_file_mapping(&self, sync_root_id: &str, local_path: &str) -> Result<bool> {
+        let conn = self.write_conn.lock().await;
+        let rows = conn.execute(
+            "DELETE FROM file_mapping WHERE sync_root_id = ?1 AND local_path = ?2",
+            rusqlite::params![sync_root_id, local_path],
+        )?;
+        Ok(rows > 0)
+    }
+
+    /// 更新文件映射的路径（重命名时使用）
+    pub async fn update_file_mapping_path(
+        &self,
+        sync_root_id: &str,
+        old_relative_path: &str,
+        new_relative_path: &str,
+        new_remote_uri: &str,
+    ) -> Result<bool> {
+        let conn = self.write_conn.lock().await;
+        let rows = conn.execute(
+            "UPDATE file_mapping SET local_path = ?1, remote_uri = ?2 WHERE sync_root_id = ?3 AND local_path = ?4",
+            rusqlite::params![new_relative_path, new_remote_uri, sync_root_id, old_relative_path],
+        )?;
+        Ok(rows > 0)
+    }
+
+    /// 删除指定目录前缀下的所有文件映射（含目录自身）
+    pub async fn delete_file_mapping_prefix(
+        &self,
+        sync_root_id: &str,
+        dir_prefix: &str,
+    ) -> Result<u64> {
+        let conn = self.write_conn.lock().await;
+        // 匹配: dir_prefix 自身、dir_prefix/... 子路径
+        let exact = dir_prefix;
+        let child_prefix = format!("{}/", dir_prefix);
+        let rows = conn.execute(
+            "DELETE FROM file_mapping WHERE sync_root_id = ?1 AND (local_path = ?2 OR local_path LIKE ?3 || '%')",
+            rusqlite::params![sync_root_id, exact, child_prefix],
+        )?;
+        Ok(rows as u64)
+    }
+
+    // ===== transfer_queue 操作 =====
+
+    pub async fn add_transfer(&self, task: &TransferTask) -> Result<i64> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        let direction = match task.direction {
+            TransferDirection::Upload => "upload",
+            TransferDirection::Download => "download",
+        };
+        let status = transfer_status_str(&task.status);
+        let local_path = task.local_path.to_string_lossy().to_string();
+
+        conn.execute(
+            "INSERT INTO transfer_queue
+             (sync_root_id, file_mapping_id, direction, local_path, remote_uri,
+              file_size, bytes_done, status, retry_count, max_retries,
+              error_message, session_id, chunk_index, created_at, updated_at)
+             VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10, ?11, ?12, ?13, ?14, ?14)",
+            rusqlite::params![
+                task.sync_root_id,
+                task.file_mapping_id,
+                direction,
+                local_path,
+                task.remote_uri,
+                task.file_size,
+                task.bytes_done,
+                status,
+                task.retry_count,
+                task.max_retries,
+                task.error_message,
+                task.session_id,
+                task.chunk_index,
+                now,
+            ],
+        )?;
+        Ok(conn.last_insert_rowid())
+    }
+
+    pub async fn update_transfer_progress(&self, id: i64, bytes_done: u64) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        conn.execute(
+            "UPDATE transfer_queue SET bytes_done = ?1, updated_at = ?2 WHERE id = ?3",
+            rusqlite::params![bytes_done, now, id],
+        )?;
+        Ok(())
+    }
+
+    pub async fn complete_transfer(&self, id: i64) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        conn.execute(
+            "UPDATE transfer_queue SET status = 'completed', updated_at = ?1 WHERE id = ?2",
+            rusqlite::params![now, id],
+        )?;
+        Ok(())
+    }
+
+    pub async fn fail_transfer(&self, id: i64, error: &str) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        conn.execute(
+            "UPDATE transfer_queue SET status = 'failed', error_message = ?1, updated_at = ?2 WHERE id = ?3",
+            rusqlite::params![error, now, id],
+        )?;
+        Ok(())
+    }
+
+    pub async fn get_interrupted_transfers(&self) -> Result<Vec<TransferTask>> {
+        let pool = self.read_pool.clone();
+        let result = tokio::task::spawn_blocking(move || -> Result<Vec<TransferTask>> {
+            let conn = pool.get()?;
+            let mut stmt = conn.prepare(
+                "SELECT id, sync_root_id, file_mapping_id, direction, local_path, remote_uri,
+                        file_size, bytes_done, status, retry_count, max_retries,
+                        error_message, session_id, chunk_index
+                 FROM transfer_queue WHERE status IN ('active', 'pending')",
+            )?;
+            let tasks = stmt
+                .query_map([], |row| Ok(transfer_task_from_row(row)))?
+                .filter_map(|t| t.ok())
+                .collect();
+            Ok(tasks)
+        })
+        .await??;
+        Ok(result)
+    }
+
+    // ===== album_sync_record 操作 =====
+
+    pub async fn get_album_sync_records(
+        &self,
+    ) -> Result<std::collections::HashMap<String, String>> {
+        let pool = self.read_pool.clone();
+        let result = tokio::task::spawn_blocking(
+            move || -> Result<std::collections::HashMap<String, String>> {
+                let conn = pool.get()?;
+                let mut stmt =
+                    conn.prepare("SELECT local_path, remote_uri FROM album_sync_record")?;
+                let records = stmt
+                    .query_map([], |row| {
+                        let local: String = row.get(0)?;
+                        let remote: String = row.get(1)?;
+                        Ok((local, remote))
+                    })?
+                    .filter_map(|r| r.ok())
+                    .collect();
+                Ok(records)
+            },
+        )
+        .await??;
+        Ok(result)
+    }
+
+    pub async fn add_album_sync_record(
+        &self,
+        local_path: &str,
+        remote_uri: &str,
+        file_hash: &str,
+    ) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        conn.execute(
+            "INSERT OR REPLACE INTO album_sync_record (local_path, remote_uri, file_hash, synced_at) VALUES (?1, ?2, ?3, ?4)",
+            rusqlite::params![local_path, remote_uri, file_hash, now],
+        )?;
+        Ok(())
+    }
+
+    // ===== sync_log 操作 =====
+
+    pub async fn add_log(
+        &self,
+        sync_root_id: &str,
+        event_type: &str,
+        details: Option<&str>,
+    ) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        conn.execute(
+            "INSERT INTO sync_log (sync_root_id, event_type, details, created_at) VALUES (?1, ?2, ?3, ?4)",
+            rusqlite::params![sync_root_id, event_type, details, now],
+        )?;
+        Ok(())
+    }
+
+    // ===== sync_task 操作 =====
+
+    pub async fn create_sync_task(&self, task: &SyncTask) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        conn.execute(
+            "INSERT INTO sync_task (id, trigger, total_count, completed_count, failed_count, status, created_at, updated_at, finished_at)
+             VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9)",
+            rusqlite::params![
+                task.id,
+                task.trigger.as_str(),
+                task.total_count,
+                task.completed_count,
+                task.failed_count,
+                task.status.as_str(),
+                task.created_at,
+                task.updated_at,
+                task.finished_at,
+            ],
+        )?;
+        Ok(())
+    }
+
+    pub async fn update_sync_task_status(
+        &self,
+        task_id: &str,
+        status: &WorkerStatus,
+    ) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        conn.execute(
+            "UPDATE sync_task SET status = ?1, updated_at = ?2 WHERE id = ?3",
+            rusqlite::params![status.as_str(), now, task_id],
+        )?;
+        Ok(())
+    }
+
+    pub async fn update_sync_task_total_count(
+        &self,
+        task_id: &str,
+        total_count: u32,
+    ) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        conn.execute(
+            "UPDATE sync_task SET total_count = ?1, updated_at = ?2 WHERE id = ?3",
+            rusqlite::params![total_count, now, task_id],
+        )?;
+        Ok(())
+    }
+
+    pub async fn finish_sync_task(
+        &self,
+        task_id: &str,
+        status: &WorkerStatus,
+        completed: u32,
+        failed: u32,
+    ) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        conn.execute(
+            "UPDATE sync_task SET status = ?1, completed_count = ?2, failed_count = ?3, updated_at = ?4, finished_at = ?5 WHERE id = ?6",
+            rusqlite::params![status.as_str(), completed, failed, now, now, task_id],
+        )?;
+        Ok(())
+    }
+
+    pub async fn increment_task_completed(&self, task_id: &str) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        conn.execute(
+            "UPDATE sync_task SET completed_count = completed_count + 1, updated_at = ?1 WHERE id = ?2",
+            rusqlite::params![now, task_id],
+        )?;
+        Ok(())
+    }
+
+    pub async fn increment_task_failed(&self, task_id: &str) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        conn.execute(
+            "UPDATE sync_task SET failed_count = failed_count + 1, updated_at = ?1 WHERE id = ?2",
+            rusqlite::params![now, task_id],
+        )?;
+        Ok(())
+    }
+
+    pub async fn get_active_sync_tasks(&self) -> Result<Vec<SyncTask>> {
+        let pool = self.read_pool.clone();
+        let result = tokio::task::spawn_blocking(move || -> Result<Vec<SyncTask>> {
+            let conn = pool.get()?;
+            let mut stmt = conn.prepare(
+                "SELECT id, trigger, total_count, completed_count, failed_count, status, created_at, updated_at, finished_at
+                 FROM sync_task WHERE status IN ('pending', 'running')
+                 ORDER BY created_at DESC"
+            )?;
+            let tasks = stmt.query_map([], sync_task_from_row)?
+                .filter_map(|t| t.ok()).collect();
+            Ok(tasks)
+        }).await??;
+        Ok(result)
+    }
+
+    pub async fn get_recent_sync_tasks(&self, limit: u32) -> Result<Vec<SyncTask>> {
+        let pool = self.read_pool.clone();
+        let result = tokio::task::spawn_blocking(move || -> Result<Vec<SyncTask>> {
+            let conn = pool.get()?;
+            let mut stmt = conn.prepare(
+                "SELECT id, trigger, total_count, completed_count, failed_count, status, created_at, updated_at, finished_at
+                 FROM sync_task ORDER BY created_at DESC LIMIT ?1"
+            )?;
+            let tasks = stmt.query_map(rusqlite::params![limit], sync_task_from_row)?
+                .filter_map(|t| t.ok()).collect();
+            Ok(tasks)
+        }).await??;
+        Ok(result)
+    }
+
+    // ===== sync_task_item 操作 =====
+
+    pub async fn create_sync_task_item(&self, item: &SyncTaskItem) -> Result<i64> {
+        let conn = self.write_conn.lock().await;
+        conn.execute(
+            "INSERT INTO sync_task_item (task_id, relative_path, action_type, status, file_size, error_message, created_at, updated_at)
+             VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8)",
+            rusqlite::params![
+                item.task_id,
+                item.relative_path,
+                item.action_type.as_str(),
+                item.status.as_str(),
+                item.file_size,
+                item.error_message,
+                item.created_at,
+                item.updated_at,
+            ],
+        )?;
+        Ok(conn.last_insert_rowid())
+    }
+
+    /// 批量插入 task_item（单次持锁，用事务包裹）
+    pub async fn create_sync_task_items_batch(&self, items: &[SyncTaskItem]) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let tx = conn.unchecked_transaction()?;
+        for item in items {
+            tx.execute(
+                "INSERT INTO sync_task_item (task_id, relative_path, action_type, status, file_size, error_message, created_at, updated_at)
+                 VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8)",
+                rusqlite::params![
+                    item.task_id,
+                    item.relative_path,
+                    item.action_type.as_str(),
+                    item.status.as_str(),
+                    item.file_size,
+                    item.error_message,
+                    item.created_at,
+                    item.updated_at,
+                ],
+            )?;
+        }
+        tx.commit()?;
+        Ok(())
+    }
+
+    pub async fn update_sync_task_item_status(
+        &self,
+        item_id: i64,
+        status: &TaskItemStatus,
+        error_message: Option<&str>,
+    ) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        conn.execute(
+            "UPDATE sync_task_item SET status = ?1, error_message = ?2, updated_at = ?3 WHERE id = ?4",
+            rusqlite::params![status.as_str(), error_message, now, item_id],
+        )?;
+        Ok(())
+    }
+
+    /// 按 task_id + relative_path + action_type 更新 task_item 状态
+    pub async fn update_task_item_status_by_path(
+        &self,
+        task_id: &str,
+        relative_path: &str,
+        action_type: &str,
+        status: &TaskItemStatus,
+        error_message: Option<&str>,
+    ) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        let now = chrono::Utc::now().to_rfc3339();
+        conn.execute(
+            "UPDATE sync_task_item SET status = ?1, error_message = ?2, updated_at = ?3 WHERE task_id = ?4 AND relative_path = ?5 AND action_type = ?6",
+            rusqlite::params![status.as_str(), error_message, now, task_id, relative_path, action_type],
+        )?;
+        Ok(())
+    }
+
+    pub async fn get_sync_task_items(&self, task_id: &str) -> Result<Vec<SyncTaskItem>> {
+        let pool = self.read_pool.clone();
+        let task_id = task_id.to_string();
+        let result = tokio::task::spawn_blocking(move || -> Result<Vec<SyncTaskItem>> {
+            let conn = pool.get()?;
+            let mut stmt = conn.prepare(
+                "SELECT id, task_id, relative_path, action_type, status, file_size, error_message, created_at, updated_at
+                 FROM sync_task_item WHERE task_id = ?1
+                 ORDER BY CASE status
+                     WHEN 'running' THEN 0
+                     WHEN 'pending' THEN 1
+                     WHEN 'failed' THEN 2
+                     WHEN 'completed' THEN 3
+                     WHEN 'skipped' THEN 4
+                     ELSE 5 END, id"
+            )?;
+            let items = stmt.query_map(rusqlite::params![task_id], sync_task_item_from_row)?
+                .filter_map(|i| i.ok()).collect();
+            Ok(items)
+        }).await??;
+        Ok(result)
+    }
+
+    pub async fn query_task_items(&self, filter: &TaskItemFilter) -> Result<Vec<SyncTaskItem>> {
+        let pool = self.read_pool.clone();
+        let filter = filter.clone();
+        let result = tokio::task::spawn_blocking(move || -> Result<Vec<SyncTaskItem>> {
+            let conn = pool.get()?;
+            let mut sql = String::from(
+                "SELECT id, task_id, relative_path, action_type, status, file_size, error_message, created_at, updated_at
+                 FROM sync_task_item WHERE 1=1"
+            );
+            let mut params: Vec<Box<dyn rusqlite::types::ToSql>> = Vec::new();
+
+            if let Some(ref task_id) = filter.task_id {
+                sql.push_str(" AND task_id = ?");
+                params.push(Box::new(task_id.clone()));
+            }
+            if let Some(ref path_contains) = filter.relative_path_contains {
+                sql.push_str(" AND relative_path LIKE ?");
+                params.push(Box::new(format!("%{}%", path_contains)));
+            }
+            if let Some(ref action_type) = filter.action_type {
+                sql.push_str(" AND action_type = ?");
+                params.push(Box::new(action_type.clone()));
+            }
+            if let Some(ref status) = filter.status {
+                sql.push_str(" AND status = ?");
+                params.push(Box::new(status.clone()));
+            }
+
+            sql.push_str(" ORDER BY CASE status WHEN 'running' THEN 0 WHEN 'pending' THEN 1 WHEN 'failed' THEN 2 WHEN 'completed' THEN 3 WHEN 'skipped' THEN 4 ELSE 5 END, id DESC LIMIT ? OFFSET ?");
+            params.push(Box::new(filter.limit));
+            params.push(Box::new(filter.offset));
+
+            let param_refs: Vec<&dyn rusqlite::types::ToSql> = params.iter().map(|p| p.as_ref()).collect();
+            let mut stmt = conn.prepare(&sql)?;
+            let items = stmt.query_map(param_refs.as_slice(), sync_task_item_from_row)?
+                .filter_map(|i| i.ok()).collect();
+            Ok(items)
+        }).await??;
+        Ok(result)
+    }
+
+    /// 清空所有同步数据（保留 sync_root 和 album_sync_record）
+    pub async fn reset_sync_data(&self) -> Result<()> {
+        let conn = self.write_conn.lock().await;
+        conn.execute_batch(
+            "DELETE FROM sync_task_item;
+             DELETE FROM sync_task;
+             DELETE FROM file_mapping;
+             DELETE FROM conflict;
+             DELETE FROM transfer_queue;
+             DELETE FROM sync_log;",
+        )?;
+        Ok(())
+    }
+}
+
+pub fn parse_sync_status(s: &str) -> SyncFileStatus {
+    match s {
+        "uploading" => SyncFileStatus::Uploading,
+        "downloading" => SyncFileStatus::Downloading,
+        "conflict" => SyncFileStatus::Conflict,
+        "placeholder" => SyncFileStatus::Placeholder,
+        _ => SyncFileStatus::Synced,
+    }
+}
+
+fn sync_status_str(s: &SyncFileStatus) -> &'static str {
+    match s {
+        SyncFileStatus::Synced => "synced",
+        SyncFileStatus::Uploading => "uploading",
+        SyncFileStatus::Downloading => "downloading",
+        SyncFileStatus::Conflict => "conflict",
+        SyncFileStatus::Placeholder => "placeholder",
+    }
+}
+
+fn transfer_status_str(s: &TransferStatus) -> &'static str {
+    match s {
+        TransferStatus::Pending => "pending",
+        TransferStatus::Active => "active",
+        TransferStatus::Paused => "paused",
+        TransferStatus::Completed => "completed",
+        TransferStatus::Failed => "failed",
+    }
+}
+
+fn transfer_task_from_row(row: &rusqlite::Row<'_>) -> TransferTask {
+    let direction_str: String = row.get(3).unwrap_or_default();
+    let direction = if direction_str == "upload" {
+        TransferDirection::Upload
+    } else {
+        TransferDirection::Download
+    };
+    let status_str: String = row.get(8).unwrap_or_default();
+    let status = match status_str.as_str() {
+        "active" => TransferStatus::Active,
+        "paused" => TransferStatus::Paused,
+        "completed" => TransferStatus::Completed,
+        "failed" => TransferStatus::Failed,
+        _ => TransferStatus::Pending,
+    };
+
+    TransferTask {
+        id: row.get(0).unwrap_or(0),
+        sync_root_id: row.get(1).unwrap_or_default(),
+        file_mapping_id: row.get(2).ok(),
+        direction,
+        local_path: std::path::PathBuf::from(row.get::<_, String>(4).unwrap_or_default()),
+        remote_uri: row.get(5).unwrap_or_default(),
+        file_size: row.get(6).unwrap_or(0),
+        bytes_done: row.get(7).unwrap_or(0),
+        status,
+        retry_count: row.get(9).unwrap_or(0),
+        max_retries: row.get(10).unwrap_or(5),
+        error_message: row.get(11).ok(),
+        session_id: row.get(12).ok(),
+        chunk_index: row.get(13).ok(),
+    }
+}
+
+fn sync_task_from_row(row: &rusqlite::Row<'_>) -> rusqlite::Result<SyncTask> {
+    let trigger_str: String = row.get(1)?;
+    let trigger = match trigger_str.as_str() {
+        "initial_sync" => WorkerTrigger::InitialSync,
+        "continuous" => WorkerTrigger::Continuous,
+        "manual" => WorkerTrigger::Manual,
+        _ => WorkerTrigger::Manual,
+    };
+    let status_str: String = row.get(5)?;
+    Ok(SyncTask {
+        id: row.get(0)?,
+        trigger,
+        total_count: row.get(2)?,
+        completed_count: row.get(3)?,
+        failed_count: row.get(4)?,
+        status: status_str
+            .parse::<WorkerStatus>()
+            .unwrap_or(WorkerStatus::Pending),
+        created_at: row.get(6)?,
+        updated_at: row.get(7)?,
+        finished_at: row.get(8)?,
+    })
+}
+
+fn sync_task_item_from_row(row: &rusqlite::Row<'_>) -> rusqlite::Result<SyncTaskItem> {
+    let action_str: String = row.get(3)?;
+    let status_str: String = row.get(4)?;
+    Ok(SyncTaskItem {
+        id: row.get(0)?,
+        task_id: row.get(1)?,
+        relative_path: row.get(2)?,
+        action_type: action_str
+            .parse::<TaskActionType>()
+            .unwrap_or(TaskActionType::Upload),
+        status: status_str
+            .parse::<TaskItemStatus>()
+            .unwrap_or(TaskItemStatus::Pending),
+        file_size: row.get(5)?,
+        error_message: row.get(6)?,
+        created_at: row.get(7)?,
+        updated_at: row.get(8)?,
+    })
+}

native/sync-core/src/sync_engine/album.rs

@@ -0,0 +1,63 @@
+use crate::errors::Result;
+use crate::models::*;
+use std::path::Path;
+
+use super::SyncEngine;
+
+impl SyncEngine {
+    pub async fn sync_album(&self, album_paths: Vec<String>, remote_dcim_uri: &str) -> Result<()> {
+        let synced = self.db.get_album_sync_records().await?;
+        let new_photos: Vec<_> = album_paths.iter().filter(|p| !synced.contains_key(*p)).collect();
+        let total = new_photos.len();
+        if total == 0 { return Ok(()); }
+
+        for (i, photo_path) in new_photos.iter().enumerate() {
+            let local_path = Path::new(photo_path);
+            let file_name = local_path.file_name()
+                .map(|n| n.to_string_lossy().to_string())
+                .unwrap_or_else(|| format!("photo_{}", i));
+
+            match tokio::fs::metadata(photo_path).await {
+                Ok(metadata) => {
+                    let file_size = metadata.len();
+                    match self.api.create_upload_session(remote_dcim_uri, file_size, false, None, None, None).await {
+                        Ok(session) => {
+                            match crate::uploader::upload_file_chunked(&self.api, local_path, &session).await {
+                                Ok(_) => {
+                                    let remote_uri = format!("{}/{}", remote_dcim_uri, file_name);
+                                    let hash = crate::utils::quick_hash(local_path, file_size).await.unwrap_or_default();
+                                    if let Err(e) = self.db.add_album_sync_record(photo_path, &remote_uri, &hash).await {
+                                        tracing::warn!("记录同步状态失败: {}", e);
+                                    }
+                                    tracing::info!("照片上传完成 ({}/{}): {}", i + 1, total, file_name);
+                                }
+                                Err(e) => tracing::error!("上传照片失败 {}: {}", file_name, e),
+                            }
+                        }
+                        Err(e) => tracing::error!("创建上传会话失败 {}: {}", file_name, e),
+                    }
+                }
+                Err(e) => tracing::warn!("无法读取照片元数据 {}: {}", photo_path, e),
+            }
+        }
+        Ok(())
+    }
+
+    pub async fn check_album_dirs(&self, base_uri: &str) -> Result<CloudAlbumCheckResult> {
+        let files = self.api.list_files_page(base_uri, 0, 200, None).await?;
+        let dcim_exists = files.files.iter().any(|f| f.name == "DCIM" && f.is_dir);
+        let pictures_exists = files.files.iter().any(|f| f.name == "Pictures" && f.is_dir);
+        Ok(CloudAlbumCheckResult {
+            dcim_exists,
+            pictures_exists,
+            dcim_uri: if dcim_exists { Some(format!("{}/DCIM", base_uri)) } else { None },
+            pictures_uri: if pictures_exists { Some(format!("{}/Pictures", base_uri)) } else { None },
+        })
+    }
+
+    pub async fn create_album_dirs(&self, base_uri: &str) -> Result<()> {
+        self.api.create_directory(base_uri, "DCIM").await?;
+        self.api.create_directory(base_uri, "Pictures").await?;
+        Ok(())
+    }
+}

native/sync-core/src/sync_engine/continuous_sync.rs

@@ -0,0 +1,215 @@
+use crate::errors::Result;
+use crate::event_handler::EventHandler;
+use crate::models::*;
+
+use super::SyncEngine;
+
+impl SyncEngine {
+    /// 持续同步：双事件源驱动 (SSE + 本地文件监听)，按 sync_mode 选择事件源
+    pub async fn run_continuous(&self) -> Result<()> {
+        let event_handler = EventHandler::new(
+            self.api.clone(),
+            self.api.client_id().to_string(),
+        );
+
+        let (local_root, remote_root, sync_mode) = {
+            let config = self.config.read().await;
+            (config.local_root.clone(), config.remote_root.clone(), config.sync_mode.clone())
+        };
+
+        // 仅 DownloadOnly、Full 和 MirrorWcf 订阅 SSE
+        let mut remote_rx = if matches!(sync_mode, SyncMode::DownloadOnly | SyncMode::Full | SyncMode::MirrorWcf) {
+            Some(event_handler.subscribe_sse(&remote_root).await?)
+        } else {
+            tracing::info!("仅上传模式: 不订阅 SSE 远程事件");
+            None
+        };
+
+        // 仅 UploadOnly、Full 和 MirrorWcf 启动本地文件监听
+        let mut local_rx = if matches!(sync_mode, SyncMode::UploadOnly | SyncMode::Full | SyncMode::MirrorWcf) {
+            Some(spawn_local_watcher(&local_root, self.shutdown_token.lock().unwrap().clone()))
+        } else {
+            tracing::info!("仅下载模式: 不启动本地文件监听");
+            None
+        };
+
+        *self.state.write().await = SyncState::Continuous;
+        tracing::info!("持续同步已启动, 模式={:?}", sync_mode);
+
+        // MirrorWcf: 取走 WCF 回调接收端
+        #[cfg(feature = "windows-cfapi")]
+        let mut wcf_fetch_rx = if matches!(sync_mode, SyncMode::MirrorWcf) {
+            self.wcf_fetch_rx.lock().unwrap().take()
+        } else {
+            None
+        };
+        #[cfg(not(feature = "windows-cfapi"))]
+        let _wcf_fetch_rx: Option<()> = None;
+
+        let mut debounce = crate::event_handler::EventDebouncer::new(
+            std::time::Duration::from_millis(500),
+        );
+
+        let shutdown_token = self.shutdown_token.lock().unwrap().clone();
+        loop {
+            tokio::select! {
+                _ = shutdown_token.cancelled() => {
+                    tracing::info!("持续同步收到停止信号");
+                    break;
+                }
+
+                // 本地文件变化（仅 UploadOnly / Full / MirrorWcf）
+                Some(event) = async {
+                    match &mut local_rx {
+                        Some(rx) => rx.recv().await,
+                        None => std::future::pending().await,
+                    }
+                } => {
+                    let mut all_events = vec![event];
+                    let idle_timeout = std::time::Duration::from_secs(3);
+                    if let Some(rx) = &mut local_rx {
+                        while let Ok(Some(e)) = tokio::time::timeout(idle_timeout, rx.recv()).await {
+                            all_events.push(e)
+                        }
+                    }
+
+                    self.handle_local_events(all_events, &local_root, &mut debounce).await;
+                }
+
+                // 远程文件变化（DownloadOnly / Full / MirrorWcf）
+                Some(event) = async {
+                    match &mut remote_rx {
+                        Some(rx) => rx.recv().await,
+                        None => std::future::pending().await,
+                    }
+                } => {
+                    self.handle_remote_event(event, &local_root, &remote_root).await;
+                }
+
+                // WCF 水合请求（仅 MirrorWcf）
+                request = async {
+                    #[cfg(feature = "windows-cfapi")]
+                    {
+                        match &mut wcf_fetch_rx {
+                            Some(rx) => rx.recv().await,
+                            None => std::future::pending().await,
+                        }
+                    }
+                    #[cfg(not(feature = "windows-cfapi"))]
+                    {
+                        let _: Option<()> = std::future::pending().await;
+                        None::<()>
+                    }
+                } => {
+                    if let Some(req) = request {
+                        #[cfg(feature = "windows-cfapi")]
+                        self.handle_wcf_fetch(req, &local_root).await;
+                        #[cfg(not(feature = "windows-cfapi"))]
+                        let _: () = req;
+                    }
+                }
+
+                // 定期心跳
+                _ = tokio::time::sleep(std::time::Duration::from_secs(60)) => {
+                    tracing::trace!("持续同步心跳");
+                    debounce.cleanup();
+                }
+            }
+        }
+
+        Ok(())
+    }
+}
+
+/// 启动本地文件监听器，返回事件接收端
+fn spawn_local_watcher(
+    watch_root: &std::path::Path,
+    shutdown_token: tokio_util::sync::CancellationToken,
+) -> tokio::sync::mpsc::Receiver<LocalFileEvent> {
+    let (local_tx, rx) = tokio::sync::mpsc::channel::<LocalFileEvent>(256);
+    let watch_root = watch_root.to_path_buf();
+
+    std::thread::spawn(move || {
+        use notify_debouncer_full::notify::{RecursiveMode, EventKind};
+        use notify_debouncer_full::notify::event::{ModifyKind, RenameMode};
+        use notify_debouncer_full::new_debouncer;
+
+        let tx = local_tx.clone();
+        let shutdown = shutdown_token.clone();
+
+        let mut debouncer = match new_debouncer(
+            std::time::Duration::from_millis(500),
+            None,
+            move |result: notify_debouncer_full::DebounceEventResult| {
+                match result {
+                    Ok(events) => {
+                        for event in events {
+                            if shutdown.is_cancelled() { return; }
+                            let kind = event.kind;
+                            let paths = &event.paths;
+
+                            let filtered: Vec<_> = paths.iter()
+                                .filter(|p| !p.extension().map(|e| e == "sync_tmp").unwrap_or(false))
+                                .cloned()
+                                .collect();
+                            if filtered.is_empty() { continue; }
+
+                            match kind {
+                                EventKind::Create(_) => {
+                                    let _ = tx.blocking_send(LocalFileEvent::Created(filtered));
+                                }
+                                EventKind::Modify(ModifyKind::Name(RenameMode::From)) => {}
+                                EventKind::Modify(ModifyKind::Name(RenameMode::To)) => {}
+                                EventKind::Modify(ModifyKind::Name(RenameMode::Both)) => {
+                                    if filtered.len() == 2 {
+                                        let _ = tx.blocking_send(LocalFileEvent::Renamed {
+                                            old_paths: vec![filtered[0].clone()],
+                                            new_paths: vec![filtered[1].clone()],
+                                        });
+                                    }
+                                }
+                                EventKind::Modify(ModifyKind::Name(RenameMode::Other)) => {
+                                    let _ = tx.blocking_send(LocalFileEvent::Modified(filtered));
+                                }
+                                EventKind::Modify(_) => {
+                                    let _ = tx.blocking_send(LocalFileEvent::Modified(filtered));
+                                }
+                                EventKind::Remove(_) => {
+                                    let _ = tx.blocking_send(LocalFileEvent::Deleted(filtered));
+                                }
+                                _ => {}
+                            }
+                        }
+                    }
+                    Err(errors) => {
+                        for e in errors {
+                            tracing::warn!("文件监听去抖错误: {}", e);
+                        }
+                    }
+                }
+            },
+        ) {
+            Ok(d) => d,
+            Err(e) => {
+                tracing::error!("无法启动文件监听: {}", e);
+                return;
+            }
+        };
+
+        if let Err(e) = debouncer.watch(&watch_root, RecursiveMode::Recursive) {
+            tracing::error!("文件监听启动失败: {}", e);
+            return;
+        }
+
+        tracing::info!("本地文件监听已启动(debouncer): {}", watch_root.display());
+
+        while !shutdown_token.is_cancelled() {
+            std::thread::sleep(std::time::Duration::from_millis(500));
+        }
+
+        let _ = debouncer.unwatch(&watch_root);
+        tracing::info!("本地文件监听已停止");
+    });
+
+    rx
+}

native/sync-core/src/sync_engine/initial_sync.rs

@@ -0,0 +1,124 @@
+use crate::errors::{Result, SyncError};
+use crate::fs_scanner::FsScanner;
+use crate::models::*;
+use std::time::Instant;
+
+use super::SyncEngine;
+
+impl SyncEngine {
+    /// 初始全量同步（受 sync_lock 保护，同一时间只允许一个同步操作）
+    pub async fn run_initial_sync(&self) -> Result<SyncSummary> {
+        // 获取互斥锁：如果旧同步还在运行，等待其退出（旧同步的 token 已被取消，worker 会快速退出）
+        let _guard = self.sync_lock.lock().await;
+
+        // 检查是否已被取消
+        if self.shutdown_token.lock().unwrap().is_cancelled() {
+            tracing::info!("初始同步已取消，跳过");
+            return Err(SyncError::Internal("同步已被取消".into()));
+        }
+
+        let start = Instant::now();
+
+        *self.state.write().await = SyncState::Initializing;
+
+        let (local_root, remote_root, sync_mode) = {
+            let config = self.config.read().await;
+            (config.local_root.clone(), config.remote_root.clone(), config.sync_mode.clone())
+        };
+        tracing::info!("开始初始同步, 模式={:?}", sync_mode);
+
+        let scanner = FsScanner::new();
+        tracing::info!("开始扫描本地文件系统: {}", local_root.display());
+        // MirrorWcf 模式跳过 hash 计算（占位符 size=0 被 diff 跳过，水合文件 hash 在需要时再算）
+        let compute_hash = !matches!(sync_mode, SyncMode::MirrorWcf);
+        let local_files = scanner.scan(&local_root, 50, false, compute_hash).await?;
+        tracing::info!("本地扫描完成: {} 个条目", local_files.len());
+
+        if self.shutdown_token.lock().unwrap().is_cancelled() {
+            return Err(SyncError::Internal("同步已被取消".into()));
+        }
+
+        tracing::info!("开始扫描远程文件树: {}", remote_root);
+        let remote_files = self.api.list_all_files(&remote_root).await?;
+        tracing::info!("远程扫描完成: {} 个条目", remote_files.len());
+
+        if self.shutdown_token.lock().unwrap().is_cancelled() {
+            return Err(SyncError::Internal("同步已被取消".into()));
+        }
+
+        let db_mappings = self.load_all_mappings().await?;
+        let plan = crate::diff::compute_diff(&local_files, &remote_files, &db_mappings, &remote_root, &sync_mode);
+        tracing::info!(
+            "差异计算完成: 上传={}, 下载={}, 删本地={}, 删远程={}, 冲突={}",
+            plan.uploads.len(),
+            plan.downloads.len(),
+            plan.delete_local.len(),
+            plan.delete_remote.len(),
+            plan.conflicts.len(),
+        );
+
+        if self.shutdown_token.lock().unwrap().is_cancelled() {
+            return Err(SyncError::Internal("同步已被取消".into()));
+        }
+
+        *self.state.write().await = SyncState::InitialSync {
+            progress: InitialSyncProgress {
+                scanned_local: local_files.len() as u64,
+                scanned_remote: remote_files.len() as u64,
+                total_to_sync: plan.total_actions(),
+                ..Default::default()
+            },
+        };
+
+        let worker_config = self.snapshot_worker_config().await;
+        let conflict_resolver = self.conflict.read().await.clone();
+
+        // MirrorWcf 模式：初始化 WCF 平台适配器（仅首次，重复初始化会触发 CFApi 重新水合）
+        #[cfg(feature = "windows-cfapi")]
+        if matches!(sync_mode, SyncMode::MirrorWcf) {
+            let already_initialized = self.platform_adapter.lock().unwrap().is_some();
+            if !already_initialized {
+                let config = self.config.read().await;
+                let adapter = crate::platform::wcf::WcfPlatformAdapter::new(
+                    self.db.clone(),
+                    self.api.clone(),
+                    config.clone(),
+                ).map_err(|e| crate::errors::SyncError::Internal(e.to_string()))?;
+                let fetch_rx = adapter.take_fetch_receiver();
+                *self.wcf_fetch_rx.lock().unwrap() = fetch_rx;
+                let adapter_arc = std::sync::Arc::new(adapter);
+                *self.platform_adapter.lock().unwrap() = Some(adapter_arc.clone());
+                self.worker_pool.set_platform_adapter(adapter_arc);
+                *self.cached_local_root.lock().unwrap() = config.local_root.clone();
+                tracing::info!("MirrorWcf: WCF 平台适配器已初始化");
+            } else {
+                tracing::info!("MirrorWcf: WCF 平台适配器已存在，跳过重复初始化");
+            }
+        }
+
+        let result = self.worker_pool.submit(
+            plan, worker_config, WorkerTrigger::InitialSync, conflict_resolver,
+        ).await;
+
+        match result {
+            Ok(summary) => {
+                *self.state.write().await = SyncState::Continuous;
+                tracing::info!("初始同步完成, 耗时 {}ms", start.elapsed().as_millis());
+                Ok(SyncSummary {
+                    duration_ms: start.elapsed().as_millis() as u64,
+                    ..summary
+                })
+            }
+            Err(e) => {
+                // 被取消时不需要设 Error 状态
+                if self.shutdown_token.lock().unwrap().is_cancelled() {
+                    tracing::info!("初始同步已取消");
+                    Err(SyncError::Internal("同步已被取消".into()))
+                } else {
+                    Err(e)
+                }
+            }
+        }
+        // _guard 在此处 drop，释放 sync_lock
+    }
+}

native/sync-core/src/sync_engine/local_events.rs

@@ -0,0 +1,476 @@
+use crate::models::*;
+use std::path::Path;
+
+use super::SyncEngine;
+
+impl SyncEngine {
+    /// 处理本地事件批次
+    pub(crate) async fn handle_local_events(
+        &self,
+        all_events: Vec<LocalFileEvent>,
+        local_root: &std::path::Path,
+        debounce: &mut crate::event_handler::EventDebouncer,
+    ) {
+        // DownloadOnly: 忽略所有本地事件
+        let (sync_mode, wcf_delete_mode) = {
+            let config = self.config.read().await;
+            (config.sync_mode.clone(), config.wcf_delete_mode.clone())
+        };
+        if matches!(sync_mode, SyncMode::DownloadOnly) {
+            return;
+        }
+
+        let root_id = self.sync_root_id.clone().unwrap_or_default();
+
+        // 清理过期的 suppress 记录（超过 30 秒）
+        let now = std::time::Instant::now();
+        self.suppress_paths.retain(|_, ts| now.duration_since(*ts).as_secs() < 30);
+
+        // === 第一步：提取 Renamed/Moved 事件，查 DB 构建操作 ===
+        let mut rename_remote: Vec<RenameAction> = Vec::new();
+        let mut move_remote: Vec<MoveAction> = Vec::new();
+        let mut handled_old_rels: std::collections::HashSet<String> = std::collections::HashSet::new();
+        let mut handled_new_rels: std::collections::HashSet<String> = std::collections::HashSet::new();
+
+        for event in &all_events {
+            match event {
+                LocalFileEvent::Renamed { old_paths, new_paths } => {
+                    for (old_path, new_path) in old_paths.iter().zip(new_paths.iter()) {
+                        if let Some((old_rel, new_rel)) = rel_pair(local_root, old_path, new_path) {
+                            if self.suppress_paths.contains_key(&old_rel) || self.suppress_paths.contains_key(&new_rel) {
+                                tracing::trace!("本地重命名被抑制(远程操作导致): {} -> {}", old_rel, new_rel);
+                                continue;
+                            }
+                            let new_name = new_path.file_name()
+                                .map(|n| n.to_string_lossy().to_string())
+                                .unwrap_or_default();
+
+                            if let Ok(Some(mapping)) = self.db.get_file_mapping(&root_id, &old_rel).await {
+                                tracing::info!("检测到本地重命名: {} -> {}", old_rel, new_rel);
+                                rename_remote.push(RenameAction {
+                                    old_relative_path: old_rel.clone(),
+                                    new_relative_path: new_rel.clone(),
+                                    remote_uri: mapping.remote_uri.clone(),
+                                    new_name,
+                                });
+                                handled_old_rels.insert(old_rel);
+                                handled_new_rels.insert(new_rel);
+                            } else {
+                                tracing::info!("本地重命名但旧路径无DB映射，按新建处理: {} -> {}", old_rel, new_rel);
+                            }
+                        }
+                    }
+                }
+                LocalFileEvent::Moved { old_paths, new_paths } => {
+                    for (old_path, new_path) in old_paths.iter().zip(new_paths.iter()) {
+                        if let Some((old_rel, new_rel)) = rel_pair(local_root, old_path, new_path) {
+                            if self.suppress_paths.contains_key(&old_rel) || self.suppress_paths.contains_key(&new_rel) {
+                                tracing::trace!("本地移动被抑制(远程操作导致): {} -> {}", old_rel, new_rel);
+                                continue;
+                            }
+                            if let Ok(Some(mapping)) = self.db.get_file_mapping(&root_id, &old_rel).await {
+                                let remote_root = { self.config.read().await.remote_root.clone() };
+                                let new_rel_path = std::path::PathBuf::from(&new_rel);
+                                let dst_dir_rel = new_rel_path.parent()
+                                    .map(|p| crate::utils::normalize_path(&p.to_string_lossy()))
+                                    .unwrap_or_default();
+                                let dst_remote_dir_uri = format!("{}/{}",
+                                    remote_root.trim_end_matches('/'),
+                                    dst_dir_rel.trim_start_matches('/'));
+
+                                tracing::info!("检测到本地移动: {} -> {}", old_rel, new_rel);
+                                move_remote.push(MoveAction {
+                                    old_relative_path: old_rel.clone(),
+                                    new_relative_path: new_rel.clone(),
+                                    remote_uri: mapping.remote_uri.clone(),
+                                    dst_remote_dir_uri,
+                                });
+                                handled_old_rels.insert(old_rel);
+                                handled_new_rels.insert(new_rel);
+                            } else {
+                                tracing::info!("本地移动但旧路径无DB映射，按新建处理: {} -> {}", old_rel, new_rel);
+                            }
+                        }
+                    }
+                }
+                _ => {}
+            }
+        }
+
+        // === 第二步：按事件类型分类路径，跳过已识别为 rename/move 的路径 ===
+        let mut create_paths: std::collections::BTreeMap<String, std::path::PathBuf> = std::collections::BTreeMap::new();
+        let mut delete_paths: std::collections::BTreeSet<String> = std::collections::BTreeSet::new();
+
+        for event in &all_events {
+            for path in event.paths() {
+                if !debounce.should_process(path) {
+                    continue;
+                }
+
+                let file_name = path.file_name().map(|n| n.to_string_lossy().to_string()).unwrap_or_default();
+                if crate::fs_scanner::SKIP_NAMES.iter().any(|s| file_name == *s)
+                    || file_name.starts_with(".sync_")
+                    || crate::utils::is_conflict_file(&file_name) {
+                    continue;
+                }
+
+                let relative = path.strip_prefix(local_root)
+                    .unwrap_or(path)
+                    .to_string_lossy()
+                    .to_string();
+                let relative = crate::utils::normalize_path(&relative);
+
+                if handled_old_rels.contains(&relative) || handled_new_rels.contains(&relative)
+                    || self.suppress_paths.contains_key(&relative) {
+                    continue;
+                }
+
+                match event {
+                    LocalFileEvent::Created(_) | LocalFileEvent::Modified(_) => {
+                        delete_paths.remove(relative.as_str());
+                        create_paths.insert(relative, path.clone());
+                    }
+                    LocalFileEvent::Deleted(_) => {
+                        if crate::utils::is_conflict_file(&relative) {
+                            continue;
+                        }
+                        create_paths.remove(relative.as_str());
+                        delete_paths.insert(relative);
+                    }
+                    LocalFileEvent::Renamed { .. } | LocalFileEvent::Moved { .. } => {}
+                }
+            }
+        }
+        debounce.cleanup();
+
+        // === hash 匹配回退：检测 delete+create 为 rename 的情况 ===
+        // MirrorWcf: 跳过 hash 匹配回退，因为读取占位符文件会被 CFApi 拦截导致 426 超时
+        if !delete_paths.is_empty() && !create_paths.is_empty() && !matches!(sync_mode, SyncMode::MirrorWcf) {
+            let mut matched_deletes: std::collections::HashSet<String> = std::collections::HashSet::new();
+            let mut matched_creates: std::collections::HashSet<String> = std::collections::HashSet::new();
+
+            for (new_rel, new_path) in &create_paths {
+                if let Ok(metadata) = tokio::fs::metadata(new_path).await {
+                    if metadata.is_dir() || metadata.len() == 0 { continue; }
+                    let new_hash = crate::utils::quick_hash(new_path, metadata.len()).await.unwrap_or_default();
+                    if new_hash.is_empty() { continue; }
+
+                    for del_rel in &delete_paths {
+                        if matched_deletes.contains(del_rel.as_str()) { continue; }
+                        if let Ok(Some(mapping)) = self.db.get_file_mapping(&root_id, del_rel).await {
+                            if mapping.local_hash.as_deref() == Some(&new_hash) {
+                                let new_name = new_path.file_name()
+                                    .map(|n| n.to_string_lossy().to_string())
+                                    .unwrap_or_default();
+
+                                let old_dir = std::path::PathBuf::from(del_rel).parent()
+                                    .map(|p| crate::utils::normalize_path(&p.to_string_lossy()))
+                                    .unwrap_or_default();
+                                let new_dir = std::path::PathBuf::from(new_rel.as_str()).parent()
+                                    .map(|p| crate::utils::normalize_path(&p.to_string_lossy()))
+                                    .unwrap_or_default();
+
+                                if old_dir == new_dir {
+                                    tracing::info!("hash匹配检测到重命名: {} -> {}", del_rel, new_rel);
+                                    rename_remote.push(RenameAction {
+                                        old_relative_path: del_rel.clone(),
+                                        new_relative_path: new_rel.clone(),
+                                        remote_uri: mapping.remote_uri.clone(),
+                                        new_name,
+                                    });
+                                } else {
+                                    let remote_root = { self.config.read().await.remote_root.clone() };
+                                    let dst_remote_dir_uri = format!("{}/{}",
+                                        remote_root.trim_end_matches('/'),
+                                        new_dir.trim_start_matches('/'));
+                                    tracing::info!("hash匹配检测到移动: {} -> {}", del_rel, new_rel);
+                                    move_remote.push(MoveAction {
+                                        old_relative_path: del_rel.clone(),
+                                        new_relative_path: new_rel.clone(),
+                                        remote_uri: mapping.remote_uri.clone(),
+                                        dst_remote_dir_uri,
+                                    });
+                                }
+                                matched_deletes.insert(del_rel.clone());
+                                matched_creates.insert(new_rel.clone());
+                                break;
+                            }
+                        }
+                    }
+                }
+            }
+
+            create_paths.retain(|rel, _| !matched_creates.contains(rel.as_str()));
+            delete_paths.retain(|rel| !matched_deletes.contains(rel.as_str()));
+        }
+
+        // === 提交重命名任务 ===
+        if !rename_remote.is_empty() {
+            let plan = SyncPlan {
+                rename_remote,
+                ..Default::default()
+            };
+            let worker_config = self.snapshot_worker_config().await;
+            let conflict_resolver = self.conflict.read().await.clone();
+            self.worker_pool.submit_background(
+                plan, worker_config, WorkerTrigger::Continuous, conflict_resolver,
+            ).await;
+        }
+
+        // === 提交移动任务 ===
+        if !move_remote.is_empty() {
+            let plan = SyncPlan {
+                move_remote,
+                ..Default::default()
+            };
+            let worker_config = self.snapshot_worker_config().await;
+            let conflict_resolver = self.conflict.read().await.clone();
+            self.worker_pool.submit_background(
+                plan, worker_config, WorkerTrigger::Continuous, conflict_resolver,
+            ).await;
+        }
+
+        // === 提交上传任务 (Create/Modify) ===
+        if !create_paths.is_empty() {
+            let mut uploads = Vec::new();
+            let mut dir_paths: Vec<String> = Vec::new();
+            let mut skipped_unstable = 0usize;
+            let mut skipped_uploading = 0usize;
+
+            for (relative, path) in &create_paths {
+                if let Ok(metadata) = tokio::fs::metadata(path).await {
+                    if !metadata.is_dir() && metadata.len() == 0 {
+                        continue;
+                    }
+
+                    if metadata.is_dir() {
+                        dir_paths.push(relative.clone());
+                        continue;
+                    }
+
+                    if self.worker_pool.is_uploading(relative) {
+                        skipped_uploading += 1;
+                        tracing::debug!("文件正在上传中，跳过: {}", relative);
+                        continue;
+                    }
+
+                    if !is_file_stable(path).await {
+                        skipped_unstable += 1;
+                        tracing::debug!("文件尚未稳定（可能正在写入），跳过: {}", relative);
+                        continue;
+                    }
+
+                    let size = metadata.len();
+                    // MirrorWcf: 跳过 quick_hash，因为读取占位符文件会被 CFApi 拦截导致 426 超时
+                    let quick_hash = if matches!(sync_mode, SyncMode::MirrorWcf) {
+                        String::new()
+                    } else {
+                        crate::utils::quick_hash(path, size).await.unwrap_or_default()
+                    };
+
+                    let db_mapping = self.db.get_file_mapping(&root_id, relative).await.ok().flatten();
+                    if let Some(ref mapping) = db_mapping {
+                        if !quick_hash.is_empty() && mapping.local_hash.as_deref() == Some(&quick_hash) {
+                            continue;
+                        }
+                        if mapping.is_placeholder {
+                            continue;
+                        }
+                    }
+
+                    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 mime_type = crate::fs_scanner::guess_mime_type(path);
+
+                    uploads.push(SyncAction {
+                        relative_path: relative.clone(),
+                        local_entry: Some(LocalFileEntry {
+                            relative_path: std::path::PathBuf::from(relative),
+                            size,
+                            mtime_ms,
+                            quick_hash,
+                            is_dir: false,
+                            mime_type,
+                        }),
+                        remote_entry: None,
+                        db_mapping,
+                    });
+                }
+            }
+
+            let scan_dirs = find_top_level_dirs(&dir_paths);
+
+            let all_handled: std::collections::HashSet<&String> = handled_old_rels.iter()
+                .chain(handled_new_rels.iter())
+                .collect();
+            let filtered_scan_dirs: Vec<String> = scan_dirs.into_iter().filter(|dir| {
+                if all_handled.iter().any(|rel| {
+                    rel.starts_with(dir.as_str())
+                        && rel.as_bytes().get(dir.len()) == Some(&b'/')
+                }) {
+                    return false;
+                }
+                for entry in self.suppress_paths.iter() {
+                    let rel = entry.key();
+                    if rel.starts_with(dir.as_str())
+                        && rel.as_bytes().get(dir.len()) == Some(&b'/') {
+                        return false;
+                    }
+                    if dir.as_str() == rel.as_str() {
+                        return false;
+                    }
+                }
+                true
+            }).collect();
+
+            if !filtered_scan_dirs.is_empty() {
+                uploads.retain(|action| {
+                    !filtered_scan_dirs.iter().any(|dir| {
+                        action.relative_path.starts_with(dir)
+                            && action.relative_path.as_bytes().get(dir.len()) == Some(&b'/')
+                    })
+                });
+            }
+
+            if !uploads.is_empty() || !filtered_scan_dirs.is_empty() {
+                tracing::info!(
+                    "本地事件收集完成: 上传={}, 目录扫描={:?}, 跳过(未稳定)={}, 跳过(重复上传)={}",
+                    uploads.len(), filtered_scan_dirs,
+                    skipped_unstable, skipped_uploading,
+                );
+                let plan = SyncPlan {
+                    uploads,
+                    scan_dirs: filtered_scan_dirs,
+                    ..Default::default()
+                };
+                let worker_config = self.snapshot_worker_config().await;
+                let conflict_resolver = self.conflict.read().await.clone();
+                self.worker_pool.submit_background(
+                    plan, worker_config, WorkerTrigger::Continuous, conflict_resolver,
+                ).await;
+            }
+        }
+
+        // === 提交删除远程任务 (本地删除 → 删除远程) ===
+        // Full 模式：始终同步删除远程
+        // MirrorWcf 模式：仅在 wcf_delete_mode == SyncRemote 时删除远程，否则仅删除本地（保留远程以便重新水合）
+        let wcf_should_delete_remote = matches!(sync_mode, SyncMode::MirrorWcf)
+            && matches!(wcf_delete_mode, WcfDeleteMode::SyncRemote);
+        if !delete_paths.is_empty() && (matches!(sync_mode, SyncMode::Full) || wcf_should_delete_remote) {
+            let mut delete_remote: Vec<SyncAction> = Vec::new();
+            for relative in &delete_paths {
+                tracing::info!("检测到本地文件删除: {}", relative);
+                if let Ok(Some(mapping)) = self.db.get_file_mapping(&root_id, relative).await {
+                    delete_remote.push(SyncAction {
+                        relative_path: relative.clone(),
+                        local_entry: None,
+                        remote_entry: Some(RemoteFileEntry {
+                            uri: mapping.remote_uri.clone(),
+                            name: String::new(),
+                            size: 0,
+                            mtime_ms: 0,
+                            hash: None,
+                            is_dir: false,
+                            file_id: mapping.remote_file_id.clone(),
+                            path: String::new(),
+                            created_at_ms: 0,
+                        }),
+                        db_mapping: Some(mapping),
+                    });
+                    let _ = self.db.delete_file_mapping(&root_id, relative).await;
+                }
+            }
+
+            if !delete_remote.is_empty() {
+                tracing::info!("本地删除事件收集完成: 删远程={}", delete_remote.len());
+                let plan = SyncPlan {
+                    delete_remote,
+                    ..Default::default()
+                };
+                let worker_config = self.snapshot_worker_config().await;
+                let conflict_resolver = self.conflict.read().await.clone();
+                self.worker_pool.submit_background(
+                    plan, worker_config, WorkerTrigger::Continuous, conflict_resolver,
+                ).await;
+            }
+        }
+
+        // UploadOnly 模式下本地删除仅清理 DB mapping，不删除远程
+        if !delete_paths.is_empty() && matches!(sync_mode, SyncMode::UploadOnly) {
+            for relative in &delete_paths {
+                let _ = self.db.delete_file_mapping(&root_id, relative).await;
+                tracing::debug!("仅上传模式: 本地删除仅清理映射，不删除远程: {}", relative);
+            }
+        }
+    }
+}
+
+/// 从两个绝对路径生成相对于 local_root 的相对路径对
+fn rel_pair(local_root: &std::path::Path, old_path: &std::path::Path, new_path: &std::path::Path) -> Option<(String, String)> {
+    let old_rel = old_path.strip_prefix(local_root).ok()?
+        .to_string_lossy().to_string();
+    let new_rel = new_path.strip_prefix(local_root).ok()?
+        .to_string_lossy().to_string();
+    Some((crate::utils::normalize_path(&old_rel), crate::utils::normalize_path(&new_rel)))
+}
+
+fn find_top_level_dirs(dirs: &[String]) -> Vec<String> {
+    if dirs.is_empty() { return Vec::new(); }
+
+    let mut sorted: Vec<&String> = dirs.iter().collect();
+    sorted.sort();
+
+    let mut top_level = Vec::new();
+    for dir in &sorted {
+        let dominated = top_level.iter().any(|parent: &String| {
+            dir.starts_with(parent.as_str())
+                && dir.as_bytes().get(parent.len()) == Some(&b'/')
+        });
+        if !dominated {
+            top_level.retain(|existing: &String| {
+                !existing.starts_with(dir.as_str())
+                    || existing.as_bytes().get(dir.len()) != Some(&b'/')
+            });
+            top_level.push((*dir).clone());
+        }
+    }
+
+    top_level
+}
+
+/// 检测文件是否稳定（不在被写入中）
+async fn is_file_stable(path: &Path) -> bool {
+    let size1 = match tokio::fs::metadata(path).await {
+        Ok(m) if !m.is_dir() => m.len(),
+        _ => return false,
+    };
+
+    let path_display = path.display().to_string();
+    let can_open = tokio::task::spawn_blocking(move || {
+        match std::fs::File::open(&path_display) {
+            Ok(_) => true,
+            Err(e) => {
+                tracing::trace!("文件稳定性检测打开失败: {}", e);
+                false
+            }
+        }
+    })
+    .await
+    .unwrap_or(false);
+
+    if !can_open {
+        return false;
+    }
+
+    tokio::time::sleep(std::time::Duration::from_millis(200)).await;
+
+    let size2 = match tokio::fs::metadata(path).await {
+        Ok(m) if !m.is_dir() => m.len(),
+        _ => return false,
+    };
+
+    size1 == size2 && size1 > 0
+}

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

@@ -0,0 +1,382 @@
+mod initial_sync;
+mod continuous_sync;
+mod local_events;
+mod remote_events;
+mod album;
+#[cfg(feature = "windows-cfapi")]
+mod wcf;
+
+// 非 WCF feature 下的 stub 方法，供 remote_events.rs 编译通过
+#[cfg(not(feature = "windows-cfapi"))]
+impl SyncEngine {
+    async fn _create_placeholder_for_remote(
+        &self,
+        _relative: &str,
+        _remote: &RemoteFileEntry,
+        _local_root: &std::path::Path,
+        _root_id: &str,
+    ) {
+        // MirrorWcf 模式在非 Windows 平台不可用，此方法不应被调用
+    }
+}
+
+use crate::api_client::ApiClient;
+use crate::conflict_resolver::ConflictResolver;
+use crate::errors::Result;
+use crate::event_sink::EventSink;
+use crate::file_lock::FileLockRegistry;
+use crate::models::*;
+use crate::sync_db::SyncDb;
+use crate::worker::WorkerPool;
+use dashmap::DashMap;
+use std::collections::HashMap;
+use std::sync::Arc;
+use tokio::sync::RwLock;
+#[cfg(feature = "windows-cfapi")]
+use tokio::sync::mpsc;
+use tokio_util::sync::CancellationToken;
+
+pub struct SyncEngine {
+    state: RwLock<SyncState>,
+    db: Arc<SyncDb>,
+    api: Arc<ApiClient>,
+    config: RwLock<SyncConfig>,
+    conflict: RwLock<ConflictResolver>,
+    sync_root_id: Option<String>,
+    shutdown_token: std::sync::Mutex<CancellationToken>,
+    /// 同步操作互斥锁：防止 force_sync / run_initial_sync 并发
+    sync_lock: tokio::sync::Mutex<()>,
+    worker_pool: WorkerPool,
+    #[allow(dead_code)]
+    file_locks: Arc<FileLockRegistry>,
+    #[allow(dead_code)]
+    ensured_dirs: Arc<DashMap<String, ()>>,
+    event_sink: Arc<EventSink>,
+    /// 远程操作导致的本地路径变化，抑制本地 debouncer 自触发事件
+    suppress_paths: Arc<DashMap<String, std::time::Instant>>,
+    /// WCF 平台适配器（仅 MirrorWcf 模式下初始化）
+    #[cfg(feature = "windows-cfapi")]
+    platform_adapter: std::sync::Mutex<Option<Arc<crate::platform::wcf::WcfPlatformAdapter>>>,
+    /// WCF FETCH_DATA 回调接收端（在适配器初始化时提取）
+    #[cfg(feature = "windows-cfapi")]
+    wcf_fetch_rx: std::sync::Mutex<Option<mpsc::Receiver<sync_windows::FetchDataRequest>>>,
+    /// WCF 水合缓存：uri → 已下载的完整文件数据，避免同一文件重复下载
+    #[cfg(feature = "windows-cfapi")]
+    hydration_cache: Arc<DashMap<String, (Vec<u8>, std::time::Instant)>>,
+    /// 缓存的本地同步根路径（WCF 清理时同步读取，避免 await）
+    #[cfg(feature = "windows-cfapi")]
+    cached_local_root: std::sync::Mutex<std::path::PathBuf>,
+}
+
+impl SyncEngine {
+    pub async fn new(config: SyncConfig) -> Result<Self> {
+        let db_path = config.data_dir.join("sync_core").join("datas").join(".sync_db.sqlite3");
+        let db_path_clone = db_path.clone();
+        let db = Arc::new(tokio::task::spawn_blocking(move || SyncDb::open(&db_path_clone)).await??);
+
+        let api = Arc::new(ApiClient::new(&config.base_url, &config.access_token, &config.refresh_token, &config.client_id));
+
+        let conflict = ConflictResolver::new(config.conflict_strategy.clone());
+
+        let sync_root_id = match db.upsert_sync_root(&config).await {
+            Ok(id) => Some(id),
+            Err(e) => {
+                tracing::warn!("写入 sync_root 失败: {}", e);
+                None
+            }
+        };
+
+        let shutdown_token = CancellationToken::new();
+        let file_locks = Arc::new(FileLockRegistry::new());
+        let ensured_dirs = Arc::new(DashMap::new());
+        let event_sink = Arc::new(EventSink::new());
+        let suppress_paths = Arc::new(DashMap::new());
+
+        let max_workers = config.max_workers;
+        let client_id = config.client_id.clone();
+        let worker_pool = WorkerPool::new(
+            db.clone(),
+            api.clone(),
+            file_locks.clone(),
+            ensured_dirs.clone(),
+            event_sink.clone(),
+            shutdown_token.clone(),
+            max_workers,
+            &client_id,
+        );
+
+        Ok(Self {
+            state: RwLock::new(SyncState::Idle),
+            db,
+            api,
+            config: RwLock::new(config),
+            conflict: RwLock::new(conflict),
+            sync_root_id,
+            shutdown_token: std::sync::Mutex::new(shutdown_token),
+            sync_lock: tokio::sync::Mutex::new(()),
+            worker_pool,
+            file_locks,
+            ensured_dirs,
+            event_sink,
+            suppress_paths,
+            #[cfg(feature = "windows-cfapi")]
+            platform_adapter: std::sync::Mutex::new(None),
+            #[cfg(feature = "windows-cfapi")]
+            wcf_fetch_rx: std::sync::Mutex::new(None),
+            #[cfg(feature = "windows-cfapi")]
+            hydration_cache: Arc::new(DashMap::new()),
+            #[cfg(feature = "windows-cfapi")]
+            cached_local_root: std::sync::Mutex::new(std::path::PathBuf::new()),
+        })
+    }
+
+    async fn snapshot_worker_config(&self) -> WorkerConfig {
+        let config = self.config.read().await;
+        WorkerConfig {
+            local_root: config.local_root.clone(),
+            remote_root: config.remote_root.clone(),
+            max_concurrent_transfers: config.max_concurrent_transfers,
+            bandwidth_limit: config.bandwidth_limit,
+            conflict_strategy: config.conflict_strategy.clone(),
+            wcf_delete_mode: config.wcf_delete_mode.clone(),
+            sync_root_id: self.sync_root_id.clone().unwrap_or_default(),
+            sync_mode: config.sync_mode.clone(),
+        }
+    }
+
+    /// 确保 shutdown token 未被取消（stop 后重新启动时使用）
+    pub fn ensure_token_fresh(&self) {
+        let token = self.shutdown_token.lock().unwrap().clone();
+        if token.is_cancelled() {
+            let new_token = tokio_util::sync::CancellationToken::new();
+            self.worker_pool.update_shutdown_token(new_token.clone());
+            *self.shutdown_token.lock().unwrap() = new_token;
+        }
+    }
+
+    pub async fn stop(&self) -> Result<()> {
+        self.shutdown_token.lock().unwrap().cancel();
+        *self.state.write().await = SyncState::Stopped;
+        Ok(())
+    }
+
+    pub async fn pause(&self) -> Result<()> {
+        *self.state.write().await = SyncState::Paused;
+        Ok(())
+    }
+
+    pub async fn resume(&self) -> Result<()> {
+        *self.state.write().await = SyncState::Continuous;
+        Ok(())
+    }
+
+    pub async fn force_sync(&self) -> Result<SyncSummary> {
+        // 取消当前所有操作（持续同步 + 正在运行的初始同步）
+        self.shutdown_token.lock().unwrap().cancel();
+
+        // 创建新 token，供接下来的 run_initial_sync 使用
+        let new_token = tokio_util::sync::CancellationToken::new();
+        *self.shutdown_token.lock().unwrap() = new_token.clone();
+        self.worker_pool.update_shutdown_token(new_token);
+
+        // run_initial_sync 会等待 sync_lock（旧同步的 worker 检测到取消后快速退出，释放锁）
+        self.run_initial_sync().await
+    }
+
+    /// 重置同步：停止任务 → 清空 DB → 清空本地目录 → 回到初始状态
+    pub async fn reset_sync(&self) -> Result<()> {
+        tracing::info!("开始重置同步...");
+
+        // 1. 停止同步
+        self.stop().await?;
+
+        // 2. 清理 WCF（重置时需要彻底清理）
+        #[cfg(feature = "windows-cfapi")]
+        {
+            self.cleanup_wcf();
+        }
+
+        // 3. 终止所有活跃 Worker
+
+        // 2. 终止所有活跃 Worker
+        self.worker_pool.abort_all_workers().await;
+
+        // 3. 清空 DB 业务数据
+        self.db.reset_sync_data().await?;
+        tracing::info!("同步数据库已清空");
+
+        // 4. 清空本地同步目录（保留目录本身，只删内容）
+        let local_root = self.config.read().await.local_root.clone();
+        if local_root.exists() {
+            let entries = std::fs::read_dir(&local_root)
+                .map_err(|_| crate::errors::SyncError::DiskFull { needed: 0, available: 0 })?;
+            for entry in entries.flatten() {
+                let path = entry.path();
+                if path.is_dir() {
+                    let _ = std::fs::remove_dir_all(&path);
+                } else {
+                    let _ = std::fs::remove_file(&path);
+                }
+            }
+            tracing::info!("本地同步目录已清空: {}", local_root.display());
+        }
+
+        // 5. 清空内存缓存
+        self.ensured_dirs.clear();
+        self.suppress_paths.clear();
+
+        // 6. 重置状态
+        *self.state.write().await = SyncState::Idle;
+
+        tracing::info!("同步重置完成，已回到初始状态");
+        Ok(())
+    }
+
+    pub fn status(&self) -> SyncStatusSnapshot {
+        let state = self.state.try_read().map(|g| g.clone()).unwrap_or(SyncState::Idle);
+
+        let (synced_files, total_files) = match &state {
+            SyncState::InitialSync { progress } => {
+                let done = progress.uploaded + progress.downloaded;
+                (done, progress.total_to_sync)
+            }
+            _ => (0, 0),
+        };
+
+        SyncStatusSnapshot {
+            state,
+            synced_files,
+            total_files,
+            uploading_count: 0,
+            downloading_count: 0,
+            conflict_count: 0,
+            error_count: 0,
+            last_sync_time: None,
+            error_message: None,
+        }
+    }
+
+    pub fn active_worker_count(&self) -> u32 {
+        self.worker_pool.active_worker_count() as u32
+    }
+
+    pub async fn config(&self) -> SyncConfig {
+        self.config.read().await.clone()
+    }
+
+    pub async fn update_config(&self, new_config: SyncConfig) -> Result<()> {
+        let old_access_token = {
+            let config = self.config.read().await;
+            config.access_token.clone()
+        };
+
+        *self.conflict.write().await = ConflictResolver::new(new_config.conflict_strategy.clone());
+
+        if new_config.access_token != old_access_token {
+            self.api.update_token(new_config.access_token.clone()).await;
+        }
+
+        let new_bandwidth = new_config.bandwidth_limit;
+        let new_conflict = format!("{:?}", new_config.conflict_strategy);
+        let new_wcf_delete = format!("{:?}", new_config.wcf_delete_mode);
+        let new_mode = format!("{:?}", new_config.sync_mode);
+        let new_max_concurrent = new_config.max_concurrent_transfers;
+        *self.config.write().await = new_config;
+
+        if new_bandwidth.is_some() {
+            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");
+        }
+        tracing::info!(
+            "同步配置已更新: 模式={}, 冲突策略={}, WCF删除={}, 并发={}, 带宽限制={:?}",
+            new_mode, new_conflict, new_wcf_delete, new_max_concurrent, new_bandwidth
+        );
+        Ok(())
+    }
+
+    pub async fn update_access_token(&self, token: String) {
+        self.api.update_token(token).await;
+    }
+
+    pub async fn register_event_sink(&self, sink: crate::frb_generated::StreamSink<crate::api::ffi_types::SyncEventFfi>) {
+        self.event_sink.register(sink).await;
+    }
+
+    pub async fn get_active_tasks(&self) -> Result<Vec<SyncTask>> {
+        self.db.get_active_sync_tasks().await
+    }
+
+    pub async fn get_recent_tasks(&self, limit: u32) -> Result<Vec<SyncTask>> {
+        self.db.get_recent_sync_tasks(limit).await
+    }
+
+    pub async fn get_task_detail(&self, task_id: &str) -> Result<Vec<SyncTaskItem>> {
+        self.db.get_sync_task_items(task_id).await
+    }
+
+    pub async fn query_task_items(&self, filter: &TaskItemFilter) -> Result<Vec<SyncTaskItem>> {
+        self.db.query_task_items(filter).await
+    }
+
+    pub async fn hydrate_file(&self, local_path: &str) -> Result<()> {
+        #[cfg(feature = "windows-cfapi")]
+        {
+            let path = std::path::PathBuf::from(local_path);
+            if let Some(adapter) = self.platform_adapter.lock().unwrap().as_ref() {
+                adapter.hydrate_file(&path)?;
+            }
+        }
+        let _ = local_path;
+        Ok(())
+    }
+
+    pub async fn shutdown(self) -> Result<()> {
+        self.stop().await
+    }
+
+    async fn load_all_mappings(&self) -> Result<HashMap<String, FileMapping>> {
+        let root_id = match &self.sync_root_id {
+            Some(id) => id.clone(),
+            None => return Ok(HashMap::new()),
+        };
+
+        let pool = self.db.read_pool();
+        let result = tokio::task::spawn_blocking(move || -> Result<HashMap<String, FileMapping>> {
+            let conn = pool.get()?;
+            let mut stmt = conn.prepare(
+                "SELECT id, sync_root_id, local_path, remote_uri, remote_file_id,
+                        local_hash, remote_hash, local_mtime, remote_mtime,
+                        local_size, remote_size, sync_status, is_placeholder
+                 FROM file_mapping WHERE sync_root_id = ?1"
+            )?;
+
+            let mappings: HashMap<String, FileMapping> = stmt.query_map(
+                rusqlite::params![root_id],
+                |row| {
+                    let local_path: String = row.get(2)?;
+                    Ok((
+                        crate::utils::normalize_path(&local_path),
+                        FileMapping {
+                            id: row.get(0)?,
+                            sync_root_id: row.get(1)?,
+                            local_path: std::path::PathBuf::from(local_path),
+                            remote_uri: row.get(3)?,
+                            remote_file_id: row.get(4)?,
+                            local_hash: row.get(5)?,
+                            remote_hash: row.get(6)?,
+                            local_mtime: row.get(7)?,
+                            remote_mtime: row.get(8)?,
+                            local_size: row.get(9)?,
+                            remote_size: row.get(10)?,
+                            sync_status: crate::diff::parse_sync_status_from_str(&row.get::<_, String>(11)?),
+                            is_placeholder: row.get::<_, i32>(12)? != 0,
+                        },
+                    ))
+                },
+            )?.filter_map(|r| r.ok()).collect();
+
+            Ok(mappings)
+        }).await??;
+
+        Ok(result)
+    }
+}

native/sync-core/src/sync_engine/remote_events.rs

@@ -0,0 +1,241 @@
+use crate::models::*;
+
+use super::SyncEngine;
+
+impl SyncEngine {
+    /// 处理远程事件
+    pub(crate) async fn handle_remote_event(
+        &self,
+        event: RemoteFileEvent,
+        local_root: &std::path::Path,
+        remote_root: &str,
+    ) {
+        // UploadOnly: 忽略所有远程事件
+        let sync_mode = {
+            let config = self.config.read().await;
+            config.sync_mode.clone()
+        };
+        if matches!(sync_mode, SyncMode::UploadOnly) {
+            return;
+        }
+
+        let is_mirror_wcf = matches!(sync_mode, SyncMode::MirrorWcf);
+        let root_id = self.sync_root_id.clone().unwrap_or_default();
+
+        match &event {
+            RemoteFileEvent::Created(remote) | RemoteFileEvent::Modified(remote) => {
+                let relative = crate::diff::remote_relative_path(
+                    remote_root,
+                    &remote.path,
+                    &remote.name,
+                    remote.is_dir,
+                );
+                tracing::info!("[远程事件] {}/{:?}: {}", event_type_name(&event), remote.file_id, relative);
+
+                let remote_entry = if remote.size == 0 && !remote.is_dir {
+                    match self.api.get_file_info(&remote.uri).await {
+                        Ok(info) => {
+                            tracing::debug!("[远程事件] 获取文件详情成功: {} ({}bytes)", relative, info.size);
+                            info
+                        }
+                        Err(e) => {
+                            tracing::warn!("[远程事件] 获取文件详情失败: {}: {}", relative, e);
+                            remote.clone()
+                        }
+                    }
+                } else {
+                    remote.clone()
+                };
+
+                let now = std::time::Instant::now();
+                self.suppress_paths.insert(relative.clone(), now);
+                if let Some(parent) = std::path::PathBuf::from(&relative).parent() {
+                    let parent_rel = crate::utils::normalize_path(&parent.to_string_lossy());
+                    if !parent_rel.is_empty() {
+                        self.suppress_paths.insert(parent_rel, now);
+                    }
+                }
+
+                if is_mirror_wcf {
+                    self._create_placeholder_for_remote(
+                        &relative, &remote_entry, local_root, &root_id,
+                    ).await;
+                } else {
+                    let plan = SyncPlan {
+                        downloads: vec![SyncAction {
+                            relative_path: relative,
+                            local_entry: None,
+                            remote_entry: Some(remote_entry),
+                            db_mapping: None,
+                        }],
+                        ..Default::default()
+                    };
+                    let worker_config = self.snapshot_worker_config().await;
+                    let conflict_resolver = self.conflict.read().await.clone();
+                    self.worker_pool.submit_background(
+                        plan, worker_config, WorkerTrigger::Continuous, conflict_resolver,
+                    ).await;
+                }
+            }
+            RemoteFileEvent::Deleted { uri, name } => {
+                let relative = crate::diff::remote_relative_path(
+                    remote_root,
+                    uri,
+                    name,
+                    false,
+                );
+                tracing::info!("[远程事件] 删除: {}", relative);
+
+                let local_path = local_root.join(&relative);
+                if local_path.exists() {
+                    if local_path.is_dir() {
+                        let _ = tokio::fs::remove_dir_all(&local_path).await;
+                    } else {
+                        let _ = tokio::fs::remove_file(&local_path).await;
+                    }
+                    tracing::info!("[远程事件] 已删除本地文件: {}", relative);
+                }
+                let _ = self.db.delete_file_mapping(&root_id, &relative).await;
+                self.suppress_paths.insert(relative.clone(), std::time::Instant::now());
+            }
+            RemoteFileEvent::Renamed { old_uri, new_entry } => {
+                let old_relative = crate::diff::remote_relative_path(
+                    remote_root,
+                    old_uri,
+                    &new_entry.name,
+                    false,
+                );
+                let new_relative = crate::diff::remote_relative_path(
+                    remote_root,
+                    &new_entry.path,
+                    &new_entry.name,
+                    new_entry.is_dir,
+                );
+                tracing::info!("[远程事件] 重命名: {} -> {}", old_relative, new_relative);
+
+                let now = std::time::Instant::now();
+                self.suppress_paths.insert(old_relative.clone(), now);
+                self.suppress_paths.insert(new_relative.clone(), now);
+
+                let old_local_path = local_root.join(&old_relative);
+
+                if old_local_path.exists() {
+                    let plan = SyncPlan {
+                        rename_local: vec![LocalRenameAction {
+                            old_relative_path: old_relative,
+                            new_relative_path: new_relative,
+                            new_remote_uri: new_entry.uri.clone(),
+                        }],
+                        ..Default::default()
+                    };
+                    let worker_config = self.snapshot_worker_config().await;
+                    let conflict_resolver = self.conflict.read().await.clone();
+                    self.worker_pool.submit_background(
+                        plan, worker_config, WorkerTrigger::Continuous, conflict_resolver,
+                    ).await;
+                } else if is_mirror_wcf {
+                    let remote_entry = self.get_remote_entry_or_fallback(new_entry).await;
+                    self._create_placeholder_for_remote(
+                        &new_relative, &remote_entry, local_root, &root_id,
+                    ).await;
+                } else {
+                    let remote_entry = self.get_remote_entry_or_fallback(new_entry).await;
+                    let plan = SyncPlan {
+                        downloads: vec![SyncAction {
+                            relative_path: new_relative,
+                            local_entry: None,
+                            remote_entry: Some(remote_entry),
+                            db_mapping: None,
+                        }],
+                        ..Default::default()
+                    };
+                    let worker_config = self.snapshot_worker_config().await;
+                    let conflict_resolver = self.conflict.read().await.clone();
+                    self.worker_pool.submit_background(
+                        plan, worker_config, WorkerTrigger::Continuous, conflict_resolver,
+                    ).await;
+                }
+            }
+            RemoteFileEvent::Moved { old_uri, new_entry } => {
+                let old_relative = crate::diff::remote_relative_path(
+                    remote_root,
+                    old_uri,
+                    &new_entry.name,
+                    false,
+                );
+                let new_relative = crate::diff::remote_relative_path(
+                    remote_root,
+                    &new_entry.path,
+                    &new_entry.name,
+                    new_entry.is_dir,
+                );
+                tracing::info!("[远程事件] 移动: {} -> {}", old_relative, new_relative);
+
+                let now = std::time::Instant::now();
+                self.suppress_paths.insert(old_relative.clone(), now);
+                self.suppress_paths.insert(new_relative.clone(), now);
+
+                let old_local_path = local_root.join(&old_relative);
+
+                if old_local_path.exists() {
+                    let plan = SyncPlan {
+                        move_local: vec![LocalRenameAction {
+                            old_relative_path: old_relative,
+                            new_relative_path: new_relative,
+                            new_remote_uri: new_entry.uri.clone(),
+                        }],
+                        ..Default::default()
+                    };
+                    let worker_config = self.snapshot_worker_config().await;
+                    let conflict_resolver = self.conflict.read().await.clone();
+                    self.worker_pool.submit_background(
+                        plan, worker_config, WorkerTrigger::Continuous, conflict_resolver,
+                    ).await;
+                } else if is_mirror_wcf {
+                    let remote_entry = self.get_remote_entry_or_fallback(new_entry).await;
+                    self._create_placeholder_for_remote(
+                        &new_relative, &remote_entry, local_root, &root_id,
+                    ).await;
+                } else {
+                    let remote_entry = self.get_remote_entry_or_fallback(new_entry).await;
+                    let plan = SyncPlan {
+                        downloads: vec![SyncAction {
+                            relative_path: new_relative,
+                            local_entry: None,
+                            remote_entry: Some(remote_entry),
+                            db_mapping: None,
+                        }],
+                        ..Default::default()
+                    };
+                    let worker_config = self.snapshot_worker_config().await;
+                    let conflict_resolver = self.conflict.read().await.clone();
+                    self.worker_pool.submit_background(
+                        plan, worker_config, WorkerTrigger::Continuous, conflict_resolver,
+                    ).await;
+                }
+            }
+        }
+    }
+
+    /// 获取远程文件详情，失败则使用 SSE 数据回退
+    pub(crate) async fn get_remote_entry_or_fallback(&self, entry: &RemoteFileEntry) -> RemoteFileEntry {
+        if entry.size == 0 && !entry.is_dir {
+            match self.api.get_file_info(&entry.uri).await {
+                Ok(info) => info,
+                Err(_) => entry.clone(),
+            }
+        } else {
+            entry.clone()
+        }
+    }
+}
+
+fn event_type_name(event: &RemoteFileEvent) -> &'static str {
+    match event {
+        RemoteFileEvent::Created(_) => "create",
+        RemoteFileEvent::Modified(_) => "modify",
+        RemoteFileEvent::Deleted { .. } => "delete",
+        RemoteFileEvent::Renamed { .. } => "rename",
+        RemoteFileEvent::Moved { .. } => "move",
+    }
+}

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

@@ -0,0 +1,272 @@
+//! WCF (Windows Cloud Filter API) 相关的 SyncEngine 方法
+//! 仅在 windows-cfapi feature 启用时编译
+
+use crate::models::*;
+
+use super::SyncEngine;
+
+#[cfg(feature = "windows-cfapi")]
+impl SyncEngine {
+    /// MirrorWcf: 处理 CFApi FETCH_DATA 回调（按需水合）
+    pub(crate) async fn handle_wcf_fetch(
+        &self,
+        request: sync_windows::FetchDataRequest,
+        _local_root: &std::path::Path,
+    ) {
+        let identity: serde_json::Value = match serde_json::from_slice(&request.file_identity) {
+            Ok(v) => v,
+            Err(e) => {
+                tracing::error!("WCF 水合: FileIdentity 反序列化失败: {}", e);
+                let _ = crate::platform::wcf::WcfPlatformAdapter::reject_fetch_data(
+                    request.connection_key, request.transfer_key,
+                );
+                return;
+            }
+        };
+
+        let remote_uri = identity["uri"].as_str().unwrap_or("").to_string();
+        let remote_size = identity["size"].as_u64().unwrap_or(0);
+        let remote_hash = identity["hash"].as_str().unwrap_or("").to_string();
+
+        if remote_uri.is_empty() {
+            tracing::error!("WCF 水合: FileIdentity 中 uri 为空");
+            let _ = crate::platform::wcf::WcfPlatformAdapter::reject_fetch_data(
+                request.connection_key, request.transfer_key,
+            );
+            return;
+        }
+
+        tracing::debug!("WCF 水合请求: uri={}, size={}, offset={}, length={}",
+            remote_uri, remote_size, request.required_offset, request.required_length);
+
+        let root_id = match &self.sync_root_id {
+            Some(id) => id.clone(),
+            None => {
+                let _ = crate::platform::wcf::WcfPlatformAdapter::reject_fetch_data(
+                    request.connection_key, request.transfer_key,
+                );
+                return;
+            }
+        };
+
+        // 清理过期缓存（超过 5 分钟）
+        let now = std::time::Instant::now();
+        self.hydration_cache.retain(|_, (_, ts)| now.duration_since(*ts).as_secs() < 300);
+
+        // 尝试从缓存获取已下载的数据
+        let data = if let Some(cached) = self.hydration_cache.get(&remote_uri) {
+            tracing::debug!("WCF 水合缓存命中: {}", remote_uri);
+            cached.0.clone()
+        } else {
+            tracing::info!("WCF 水合下载: {} ({}bytes)", remote_uri, remote_size);
+            let config = self.snapshot_worker_config().await;
+
+            let download_result = async {
+                let urls = self.api.get_download_url(&[&remote_uri]).await;
+                let urls = match urls {
+                    Ok(u) => u,
+                    Err(crate::errors::SyncError::Auth(_)) => {
+                        tracing::info!("WCF 水合: token 过期，尝试刷新后重试");
+                        self.api.refresh_access_token().await?;
+                        self.api.get_download_url(&[&remote_uri]).await?
+                    }
+                    Err(e) => return Err(e),
+                };
+                let download_url = urls.into_iter().next()
+                    .ok_or_else(|| crate::errors::SyncError::Network("获取下载 URL 返回空列表".into()))?;
+
+                let data = crate::downloader::download_to_buffer(
+                    &self.api,
+                    &download_url,
+                    config.bandwidth_limit,
+                ).await?;
+
+                Ok::<Vec<u8>, crate::errors::SyncError>(data)
+            }.await;
+
+            match download_result {
+                Ok(data) => {
+                    self.hydration_cache.insert(remote_uri.clone(), (data.clone(), std::time::Instant::now()));
+                    data
+                }
+                Err(e) => {
+                    tracing::error!("WCF 水合下载失败: {}: {}", remote_uri, e);
+                    let _ = crate::platform::wcf::WcfPlatformAdapter::reject_fetch_data(
+                        request.connection_key, request.transfer_key,
+                    );
+                    return;
+                }
+            }
+        };
+
+        // 计算实际需要传输的范围
+        let offset = request.required_offset.max(0) as usize;
+        let end = if request.required_length < 0 {
+            data.len()
+        } else {
+            (offset + request.required_length as usize).min(data.len())
+        };
+
+        let transfer_data = if offset < data.len() && offset < end {
+            &data[offset..end]
+        } else {
+            &data[..]
+        };
+
+        match crate::platform::wcf::WcfPlatformAdapter::fulfill_fetch_data(
+            request.connection_key,
+            request.transfer_key,
+            transfer_data,
+            offset as i64,
+        ) {
+            Ok(_) => {
+                tracing::debug!("WCF 水合数据推送: {} offset={} len={}", remote_uri, offset, transfer_data.len());
+
+                if let Ok(Some(mapping)) = self.db.find_mapping_by_remote_uri(&root_id, &remote_uri).await {
+                    self.suppress_paths.insert(mapping.local_path.to_string_lossy().into_owned(), std::time::Instant::now());
+                    let _ = self.db.upsert_file_mapping(&FileMapping {
+                        id: mapping.id,
+                        sync_root_id: mapping.sync_root_id,
+                        local_path: mapping.local_path.clone(),
+                        remote_uri: mapping.remote_uri.clone(),
+                        remote_file_id: mapping.remote_file_id.clone(),
+                        local_hash: None,
+                        remote_hash: if remote_hash.is_empty() { mapping.remote_hash.clone() } else { Some(remote_hash.clone()) },
+                        local_mtime: mapping.local_mtime,
+                        remote_mtime: mapping.remote_mtime,
+                        local_size: mapping.local_size,
+                        remote_size: Some(remote_size),
+                        sync_status: SyncFileStatus::Synced,
+                        is_placeholder: false,
+                    }).await;
+                }
+            }
+            Err(e) => {
+                tracing::error!("WCF CfExecute 传输数据失败: {}: {}", remote_uri, e);
+            }
+        }
+    }
+
+    /// MirrorWcf: 为远程文件创建占位符（持续同步时远程新建/修改文件调用）
+    pub(crate) async fn _create_placeholder_for_remote(
+        &self,
+        relative: &str,
+        remote: &RemoteFileEntry,
+        local_root: &std::path::Path,
+        root_id: &str,
+    ) {
+        let local_path = local_root.join(relative);
+
+        if let Some(parent) = local_path.parent() {
+            let _ = tokio::fs::create_dir_all(parent).await;
+        }
+
+        if remote.is_dir {
+            let _ = tokio::fs::create_dir_all(&local_path).await;
+        } else {
+            #[cfg(feature = "windows-cfapi")]
+            {
+                if let Some(adapter) = self.platform_adapter.lock().unwrap().as_ref() {
+                    match adapter.create_placeholder_for_remote(
+                        local_path.parent().unwrap_or(local_root),
+                        local_path.file_name().map(|n| n.to_string_lossy().to_string()).unwrap_or_default().as_str(),
+                        remote.size,
+                        &remote.uri,
+                        remote.hash.as_deref(),
+                        remote.mtime_ms,
+                    ) {
+                        Ok(_) => tracing::info!("[WCF] 创建占位符: {}", relative),
+                        Err(e) => tracing::warn!("[WCF] 创建占位符失败 {}: {}", relative, e),
+                    }
+                }
+            }
+
+            let _ = self.db.upsert_file_mapping(&FileMapping {
+                id: 0,
+                sync_root_id: root_id.to_string(),
+                local_path: std::path::PathBuf::from(relative),
+                remote_uri: remote.uri.clone(),
+                remote_file_id: remote.file_id.clone(),
+                local_hash: None,
+                remote_hash: remote.hash.clone(),
+                local_mtime: None,
+                remote_mtime: Some(remote.mtime_ms),
+                local_size: None,
+                remote_size: Some(remote.size),
+                sync_status: SyncFileStatus::Placeholder,
+                is_placeholder: true,
+            }).await;
+        }
+    }
+
+    /// WCF 清理（同步，可安全在 exit 前调用）
+    pub(crate) fn cleanup_wcf(&self) {
+        let adapter_opt = self.platform_adapter.lock().unwrap().take();
+        if let Some(adapter) = adapter_opt {
+            if let Err(e) = adapter.disconnect() {
+                tracing::warn!("WCF 断开连接失败: {}", e);
+            }
+
+            let local_root = self.cached_local_root.lock().unwrap().clone();
+            if !local_root.as_os_str().is_empty() {
+                unsafe {
+                    use std::os::windows::ffi::OsStrExt;
+                    let path_w: Vec<u16> = std::ffi::OsStr::new(&local_root)
+                        .encode_wide()
+                        .chain(std::iter::once(0))
+                        .collect();
+                    let _ = windows::Win32::Storage::CloudFilters::CfUnregisterSyncRoot(
+                        windows::core::PCWSTR(path_w.as_ptr()),
+                    );
+                }
+                tracing::info!("WCF sync root 已注销: {}", local_root.display());
+            }
+
+            let root_id = self.sync_root_id.clone().unwrap_or_default();
+            if let Ok(mappings) = self.list_placeholders_sync(&root_id) {
+                for mapping in &mappings {
+                    let local_path = local_root.join(&mapping.local_path);
+                    if local_path.exists() {
+                        let _ = std::fs::remove_file(&local_path);
+                    }
+                }
+                if !mappings.is_empty() {
+                    tracing::info!("已清理 {} 个占位符文件", mappings.len());
+                }
+            }
+        }
+    }
+
+    /// 同步查询占位符映射（避免 await，可在 exit 前安全调用）
+    fn list_placeholders_sync(&self, sync_root_id: &str) -> anyhow::Result<Vec<FileMapping>> {
+        let pool = self.db.read_pool();
+        let conn = pool.get().map_err(|e| anyhow::anyhow!("{}", e))?;
+        let mut stmt = conn.prepare(
+            "SELECT id, sync_root_id, local_path, remote_uri, remote_file_id,
+                    local_hash, remote_hash, local_mtime, remote_mtime,
+                    local_size, remote_size, sync_status, is_placeholder
+             FROM file_mapping WHERE sync_root_id = ?1 AND is_placeholder = 1",
+        ).map_err(|e| anyhow::anyhow!("{}", e))?;
+
+        let mappings = stmt.query_map(rusqlite::params![sync_root_id], |row| {
+            Ok(FileMapping {
+                id: row.get(0)?,
+                sync_root_id: row.get(1)?,
+                local_path: std::path::PathBuf::from(row.get::<_, String>(2)?),
+                remote_uri: row.get(3)?,
+                remote_file_id: row.get(4)?,
+                local_hash: row.get(5)?,
+                remote_hash: row.get(6)?,
+                local_mtime: row.get(7)?,
+                remote_mtime: row.get(8)?,
+                local_size: row.get(9)?,
+                remote_size: row.get(10)?,
+                sync_status: crate::sync_db::parse_sync_status(&row.get::<_, String>(11)?),
+                is_placeholder: row.get::<_, i32>(12)? != 0,
+            })
+        }).map_err(|e| anyhow::anyhow!("{}", e))?
+        .filter_map(|m| m.ok()).collect();
+
+        Ok(mappings)
+    }
+}

native/sync-core/src/transfer.rs

@@ -0,0 +1,2 @@
+// 保留 TransferConfig / TransferTask / TransferDirection / TransferStatus 模型
+// TransferManager 的 download/upload/retry_with_backoff 已迁移到 uploader.rs / downloader.rs / worker.rs

native/sync-core/src/uploader.rs

@@ -0,0 +1,299 @@
+use crate::api_client::ApiClient;
+use crate::errors::{Result, SyncError};
+use crate::file_lock::FileLockRegistry;
+use crate::models::*;
+use crate::sync_db::SyncDb;
+use dashmap::DashMap;
+use std::path::Path;
+use tokio::sync::Semaphore;
+
+/// 上传单个文件（含重试），受并发信号量控制
+/// 逐块读取文件，避免全量加载到内存
+#[allow(clippy::too_many_arguments)]
+pub async fn upload_file(
+    task_id: &str,
+    action: &SyncAction,
+    config: &WorkerConfig,
+    api: &ApiClient,
+    db: &SyncDb,
+    file_locks: &FileLockRegistry,
+    ensured_dirs: &DashMap<String, ()>,
+    semaphore: &Semaphore,
+    root_id: &str,
+) -> Result<()> {
+    let local = action.local_entry.as_ref().ok_or_else(|| {
+        SyncError::Internal("上传操作缺少本地文件信息".into())
+    })?;
+
+    let _lock = file_locks.acquire(&action.relative_path).await;
+
+    if local.is_dir {
+        let remote_uri = format!("{}/{}", config.remote_root, action.relative_path);
+        ensure_remote_dirs(task_id, config.remote_root.as_str(), &action.relative_path, api, ensured_dirs).await?;
+        db.upsert_file_mapping(&FileMapping {
+            id: 0,
+            sync_root_id: root_id.to_string(),
+            local_path: local.relative_path.clone(),
+            remote_uri,
+            remote_file_id: None,
+            local_hash: Some(local.quick_hash.clone()),
+            remote_hash: None,
+            local_mtime: Some(local.mtime_ms),
+            remote_mtime: None,
+            local_size: Some(local.size),
+            remote_size: None,
+            sync_status: SyncFileStatus::Synced,
+            is_placeholder: false,
+        }).await?;
+        return Ok(());
+    }
+
+    let local_path = config.local_root.join(&local.relative_path);
+    let file_uri = format!("{}/{}", config.remote_root, 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,
+            "upload",
+            &TaskItemStatus::Running,
+            None,
+        )
+        .await;
+
+    let max_retries = 3u32;
+
+    // 确保远程父目录链存在
+    if let Some(parent) = Path::new(&action.relative_path).parent() {
+        let parent_str = parent.to_string_lossy().to_string();
+        if !parent_str.is_empty() {
+            if let Err(e) = ensure_remote_dirs(task_id, &config.remote_root, &parent_str, api, ensured_dirs).await {
+                tracing::warn!("[{}] 确保远程父目录失败 {}: {}", task_id, parent_str, e);
+            }
+        }
+    }
+
+    let overwrite = action.db_mapping.is_some();
+
+    // 打开文件（加重试，处理文件被占用的情况）
+    let file = {
+        let mut read_retries = 0u32;
+        loop {
+            match tokio::fs::File::open(&local_path).await {
+                Ok(f) => break f,
+                Err(e) if e.raw_os_error() == Some(32) && read_retries < 5 => {
+                    read_retries += 1;
+                    let delay = read_retries * 1000;
+                    tracing::warn!("[{}] 文件被占用，{}ms后重试 ({}): {}", task_id, delay, read_retries, local_path.display());
+                    tokio::time::sleep(std::time::Duration::from_millis(delay as u64)).await;
+                }
+                Err(e) => return Err(e.into()),
+            }
+        }
+    };
+
+    let last_modified = if local.mtime_ms > 0 { Some(local.mtime_ms) } else { None };
+    let mime_type_str = local.mime_type.as_deref();
+    let session = retry_upload_session(
+        task_id, &file_uri, local.size, max_retries, overwrite, last_modified, mime_type_str, None, api,
+    ).await?;
+    let chunk_size = session.chunk_size as usize;
+
+    tracing::info!("[{}] chunk_size={}bytes, 开始上传: {} ({}bytes)", task_id, chunk_size, action.relative_path, local.size);
+
+    // 逐块读取 + 上传，内存占用仅为一个 chunk
+    // 分片上传要求：每个分片（除最后一个）必须恰好 chunk_size 字节
+    // 因此需要循环 read 直到读满 buffer 或到达 EOF，才能作为一个分片上传
+    let mut reader = tokio::io::BufReader::new(file);
+    let mut buf = vec![0u8; chunk_size];
+    let mut index: u32 = 0;
+
+    loop {
+        use tokio::io::AsyncReadExt;
+        let mut filled = 0usize;
+        loop {
+            let n = reader.read(&mut buf[filled..]).await?;
+            if n == 0 { break; }
+            filled += n;
+            if filled >= chunk_size { break; }
+        }
+        if filled == 0 { break; }
+
+        let chunk = &buf[..filled];
+        let mut chunk_retries = 0u32;
+        loop {
+            match api.upload_chunk(&session.session_id, index, chunk).await {
+                Ok(_) => break,
+                Err(SyncError::Auth(_)) => return Err(SyncError::Auth("Token 过期".into())),
+                Err(e) if chunk_retries < max_retries => {
+                    chunk_retries += 1;
+                    let delay = crate::utils::retry_delay_ms(chunk_retries, 1000, 30000);
+                    tracing::warn!("[{}] 上传重试 ({}/{}): {}: {}", task_id, chunk_retries, max_retries, action.relative_path, e);
+                    tokio::time::sleep(std::time::Duration::from_millis(delay)).await;
+                }
+                Err(e) => return Err(e),
+            }
+        }
+        index += 1;
+    }
+
+    // 上传完成后获取远程文件信息
+    let remote_uri = file_uri.clone();
+    let (remote_file_id, remote_hash) = match api.get_file_info(&remote_uri).await {
+        Ok(info) => (info.file_id.clone(), info.hash.clone()),
+        Err(e) => {
+            tracing::warn!("[{}] 上传后获取文件信息失败: {}", task_id, e);
+            (None, None)
+        }
+    };
+
+    db.upsert_file_mapping(&FileMapping {
+        id: 0,
+        sync_root_id: root_id.to_string(),
+        local_path: local.relative_path.clone(),
+        remote_uri,
+        remote_file_id,
+        local_hash: Some(local.quick_hash.clone()),
+        remote_hash: remote_hash.or(Some(local.quick_hash.clone())),
+        local_mtime: Some(local.mtime_ms),
+        remote_mtime: Some(local.mtime_ms),
+        local_size: Some(local.size),
+        remote_size: Some(local.size),
+        sync_status: SyncFileStatus::Synced,
+        is_placeholder: false,
+    }).await?;
+
+    tracing::info!("[{}] 上传完成: {}", task_id, action.relative_path);
+    Ok(())
+}
+
+/// 带重试的创建上传会话（遇到锁冲突自动强制解锁）
+#[allow(clippy::too_many_arguments)]
+pub async fn retry_upload_session(
+    task_id: &str,
+    file_uri: &str,
+    file_size: u64,
+    max_retries: u32,
+    overwrite: bool,
+    last_modified: Option<i64>,
+    mime_type: Option<&str>,
+    policy_id: Option<&str>,
+    api: &ApiClient,
+) -> Result<UploadSession> {
+    let mut attempt = 0u32;
+    let mut tried_overwrite = overwrite;
+    loop {
+        attempt += 1;
+        match api.create_upload_session(file_uri, file_size, tried_overwrite, last_modified, mime_type, policy_id).await {
+            Ok(session) => return Ok(session),
+            Err(SyncError::Auth(_)) => return Err(SyncError::Auth("Token 过期".into())),
+            Err(SyncError::ObjectExisted) if !tried_overwrite => {
+                tracing::info!("[{}] 远程文件已存在，切换为覆盖上传", task_id);
+                tried_overwrite = true;
+                continue;
+            }
+            Err(SyncError::LockConflict { tokens }) => {
+                tracing::warn!("[{}] 文件锁定冲突，强制解锁 {} 个锁后重试", task_id, tokens.len());
+                if let Err(e) = api.force_unlock_files(&tokens).await {
+                    tracing::error!("[{}] 强制解锁失败: {}", task_id, e);
+                }
+                if attempt <= max_retries {
+                    continue;
+                }
+                return Err(SyncError::LockConflict { tokens });
+            }
+            Err(e) if attempt <= max_retries => {
+                let delay = crate::utils::retry_delay_ms(attempt, 1000, 30000);
+                tracing::warn!("[{}] 创建上传会话失败，{}ms后重试 ({}): {}", task_id, delay, attempt, e);
+                tokio::time::sleep(std::time::Duration::from_millis(delay)).await;
+            }
+            Err(e) => return Err(e),
+        }
+    }
+}
+
+/// 递归确保远程目录链存在（带缓存）
+pub async fn ensure_remote_dirs(
+    task_id: &str,
+    remote_root: &str,
+    relative_path: &str,
+    api: &ApiClient,
+    ensured_dirs: &DashMap<String, ()>,
+) -> Result<()> {
+    let parts: Vec<&str> = relative_path.split('/').filter(|p| !p.is_empty()).collect();
+    if parts.is_empty() {
+        return Ok(());
+    }
+
+    let mut current = remote_root.to_string();
+    let mut dirs_to_create: Vec<(String, String)> = Vec::new();
+
+    for part in &parts {
+        let next_uri = format!("{}/{}", current, part);
+        if ensured_dirs.contains_key(&next_uri) {
+            current = next_uri;
+            continue;
+        }
+        dirs_to_create.push((current.clone(), part.to_string()));
+        current = next_uri;
+    }
+
+    if dirs_to_create.is_empty() {
+        return Ok(());
+    }
+
+    for (parent_uri, dir_name) in &dirs_to_create {
+        let uri = format!("{}/{}", parent_uri, dir_name);
+        match api.create_directory(parent_uri, dir_name).await {
+            Ok(_) => {
+                tracing::debug!("[{}] 创建远程目录: {}", task_id, uri);
+                ensured_dirs.insert(uri.clone(), ());
+            }
+            Err(e) => {
+                let msg = e.to_string();
+                if msg.contains("exist") || msg.contains("already") || msg.contains("40004") {
+                    ensured_dirs.insert(uri.clone(), ());
+                } else {
+                    tracing::warn!("[{}] 创建远程目录失败 {}: {}", task_id, uri, e);
+                }
+            }
+        }
+    }
+
+    Ok(())
+}
+
+/// 逐块读取文件并上传分片（用于相册同步等场景，避免全量加载到内存）
+/// 分片上传要求：每个分片（除最后一个）必须恰好 chunk_size 字节
+pub async fn upload_file_chunked(
+    api: &ApiClient,
+    local_path: &Path,
+    session: &UploadSession,
+) -> Result<()> {
+    let chunk_size = session.chunk_size as usize;
+    let file = tokio::fs::File::open(local_path).await?;
+    let mut reader = tokio::io::BufReader::new(file);
+    let mut buf = vec![0u8; chunk_size];
+    let mut index: u32 = 0;
+
+    loop {
+        use tokio::io::AsyncReadExt;
+        let mut filled = 0usize;
+        loop {
+            let n = reader.read(&mut buf[filled..]).await?;
+            if n == 0 { break; }
+            filled += n;
+            if filled >= chunk_size { break; }
+        }
+        if filled == 0 { break; }
+
+        api.upload_chunk(&session.session_id, index, &buf[..filled]).await?;
+        index += 1;
+    }
+
+    Ok(())
+}

native/sync-core/src/utils.rs

@@ -0,0 +1,151 @@
+use sha2::{Digest, Sha256};
+use std::path::{Path, PathBuf};
+
+use crate::errors::{Result, SyncError};
+
+/// 增量哈希：前 8KB + 文件大小（快速判断文件是否变更）
+pub async fn quick_hash(path: &Path, size: u64) -> Result<String> {
+    if size == 0 {
+        return Ok("0:0:0".to_string());
+    }
+    let file = tokio::fs::File::open(path).await?;
+    let mut reader = tokio::io::BufReader::new(file);
+    let mut head = vec![0u8; 8192.min(size as usize)];
+    let n = tokio::io::AsyncReadExt::read(&mut reader, &mut head).await?;
+    head.truncate(n);
+    let mut hasher = Sha256::new();
+    hasher.update(&head);
+    let hash = hasher.finalize();
+    Ok(format!("{}:{}:{}", hex::encode(hash), n, size))
+}
+
+/// 验证路径在同步根目录下，防止路径遍历攻击
+pub fn validate_path(root: &Path, path: &Path) -> Result<()> {
+    let canonical_root = root.canonicalize().map_err(|e| SyncError::FileSystem(
+        format!("无法解析根目录: {}", e)
+    ))?;
+
+    let canonical_path = path.canonicalize()
+        .unwrap_or_else(|_| path.to_path_buf());
+
+    let relative = canonical_path.strip_prefix(&canonical_root)
+        .map_err(|_| SyncError::PathTraversal {
+            path: path.to_string_lossy().to_string(),
+            root: canonical_root.to_string_lossy().to_string(),
+        })?;
+
+    if relative.components().any(|c| matches!(c, std::path::Component::ParentDir)) {
+        return Err(SyncError::PathTraversal {
+            path: path.to_string_lossy().to_string(),
+            root: canonical_root.to_string_lossy().to_string(),
+        });
+    }
+
+    Ok(())
+}
+
+/// 路径规范化：统一使用正斜杠，去除尾部斜杠
+pub fn normalize_path(path: &str) -> String {
+    let p = path.replace('\\', "/");
+    p.trim_end_matches('/').to_string()
+}
+
+/// 冲突文件标记前缀
+pub const CONFLICT_MARKER: &str = "sync-conflict";
+
+/// 判断文件名是否为冲突副本
+pub fn is_conflict_file(name: &str) -> bool {
+    name.contains(CONFLICT_MARKER)
+}
+
+/// 生成冲突副本名称
+pub fn generate_conflict_name(original: &str) -> String {
+    let path = PathBuf::from(original);
+    let stem = path.file_stem()
+        .and_then(|s| s.to_str())
+        .unwrap_or("file");
+    let ext = path.extension()
+        .and_then(|s| s.to_str())
+        .unwrap_or("");
+
+    let date = chrono::Local::now().format("%Y-%m-%d");
+    if ext.is_empty() {
+        format!("{}.{}.{}", stem, CONFLICT_MARKER, date)
+    } else {
+        format!("{}.{}.{}.{}", stem, CONFLICT_MARKER, date, ext)
+    }
+}
+
+/// 计算重试延迟（指数退避）
+pub fn retry_delay_ms(attempt: u32, base_ms: u64, max_ms: u64) -> u64 {
+    let delay = base_ms * 2u64.saturating_pow(attempt);
+    delay.min(max_ms)
+}
+
+/// 判断路径是否为同步临时文件
+pub fn is_temp_file(path: &Path) -> bool {
+    path.extension()
+        .map(|ext| ext == "sync_tmp" || ext == "sync_temp")
+        .unwrap_or(false)
+}
+
+/// 清理目录下残留的 .sync_tmp 文件
+pub fn cleanup_temp_files<'a>(dir: &'a Path) -> std::pin::Pin<Box<dyn std::future::Future<Output = u32> + Send + 'a>> {
+    Box::pin(async move {
+        let mut cleaned = 0u32;
+        let mut entries = match tokio::fs::read_dir(dir).await {
+            Ok(e) => e,
+            Err(_) => return 0,
+        };
+
+        while let Ok(Some(entry)) = entries.next_entry().await {
+            let path = entry.path();
+            if path.is_dir() {
+                cleaned += cleanup_temp_files(&path).await;
+            } else if is_temp_file(&path) && tokio::fs::remove_file(&path).await.is_ok() {
+                tracing::debug!("清理临时文件: {}", path.display());
+                cleaned += 1;
+            }
+        }
+
+        cleaned
+    })
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_normalize_path() {
+        assert_eq!(normalize_path("foo\\bar\\baz"), "foo/bar/baz");
+        assert_eq!(normalize_path("foo/bar/"), "foo/bar");
+        assert_eq!(normalize_path("/foo/bar"), "/foo/bar");
+    }
+
+    #[test]
+    fn test_generate_conflict_name() {
+        let name = generate_conflict_name("photo.jpg");
+        assert!(name.starts_with("photo.sync-conflict."));
+        assert!(name.ends_with(".jpg"));
+
+        let name_no_ext = generate_conflict_name("README");
+        assert!(name_no_ext.starts_with("README.sync-conflict."));
+    }
+
+    #[test]
+    fn test_is_conflict_file() {
+        assert!(is_conflict_file("photo.sync-conflict.2026-05-14.jpg"));
+        assert!(is_conflict_file("README.sync-conflict.2026-05-14"));
+        assert!(!is_conflict_file("photo.jpg"));
+        assert!(!is_conflict_file("normal_file.txt"));
+    }
+
+    #[test]
+    fn test_retry_delay() {
+        assert_eq!(retry_delay_ms(0, 1000, 60000), 1000);
+        assert_eq!(retry_delay_ms(1, 1000, 60000), 2000);
+        assert_eq!(retry_delay_ms(5, 1000, 60000), 32000);
+        assert_eq!(retry_delay_ms(10, 1000, 60000), 60000);
+    }
+}

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

@@ -0,0 +1,7 @@
+mod worker_impl;
+mod pool;
+
+pub use worker_impl::Worker;
+#[cfg(feature = "windows-cfapi")]
+pub use worker_impl::PlaceholderCreator;
+pub use pool::WorkerPool;

native/sync-core/src/worker/pool.rs

@@ -0,0 +1,472 @@
+use crate::api_client::ApiClient;
+use crate::conflict_resolver::ConflictResolver;
+use crate::errors::{Result, SyncError};
+use crate::file_lock::FileLockRegistry;
+use crate::models::*;
+use crate::sync_db::SyncDb;
+use super::worker_impl::Worker;
+#[cfg(feature = "windows-cfapi")]
+use super::worker_impl::PlaceholderCreator;
+use dashmap::DashMap;
+use dashmap::DashSet;
+use std::sync::Arc;
+use tokio::sync::Semaphore;
+use tokio_util::sync::CancellationToken;
+
+/// WorkerPool — 全局 Worker 并发控制
+pub struct WorkerPool {
+    worker_semaphore: Arc<Semaphore>,
+    active_workers: Arc<DashMap<String, tokio::task::JoinHandle<()>>>,
+    /// 当前正在上传的相对路径集合，用于去重
+    active_upload_paths: Arc<DashSet<String>>,
+    /// 活跃 worker 总数（包括 submit 阻塞型 + submit_background 后台型）
+    active_count: Arc<std::sync::atomic::AtomicU32>,
+    db: Arc<SyncDb>,
+    api: Arc<ApiClient>,
+    file_locks: Arc<FileLockRegistry>,
+    ensured_dirs: Arc<DashMap<String, ()>>,
+    event_sink: Arc<crate::event_sink::EventSink>,
+    shutdown_token: std::sync::Mutex<CancellationToken>,
+    #[cfg(feature = "windows-cfapi")]
+    platform_adapter: std::sync::Mutex<Option<Arc<dyn PlaceholderCreator>>>,
+}
+
+impl WorkerPool {
+    #[allow(clippy::too_many_arguments)]
+    pub fn new(
+        db: Arc<SyncDb>,
+        api: Arc<ApiClient>,
+        file_locks: Arc<FileLockRegistry>,
+        ensured_dirs: Arc<DashMap<String, ()>>,
+        event_sink: Arc<crate::event_sink::EventSink>,
+        shutdown_token: CancellationToken,
+        max_workers_override: usize,
+        client_id: &str,
+    ) -> Self {
+        let cpu_count = num_cpus();
+        let max_workers = if max_workers_override > 0 {
+            max_workers_override.min(cpu_count * 2).max(1)
+        } else {
+            cpu_count.clamp(1, 32)
+        };
+        tracing::info!(
+            "WorkerPool 初始化: 最大并发 Worker 数={} (cpu={}, override={})",
+            max_workers,
+            cpu_count,
+            max_workers_override
+        );
+        tracing::info!("Client ID: {}", client_id);
+
+        Self {
+            worker_semaphore: Arc::new(Semaphore::new(max_workers)),
+            active_workers: Arc::new(DashMap::new()),
+            active_upload_paths: Arc::new(DashSet::new()),
+            active_count: Arc::new(std::sync::atomic::AtomicU32::new(0)),
+            db,
+            api,
+            file_locks,
+            ensured_dirs,
+            event_sink,
+            shutdown_token: std::sync::Mutex::new(shutdown_token),
+            #[cfg(feature = "windows-cfapi")]
+            platform_adapter: std::sync::Mutex::new(None),
+        }
+    }
+
+    /// 提交 Worker（阻塞等待结果）
+    pub async fn submit(
+        &self,
+        plan: SyncPlan,
+        config: WorkerConfig,
+        trigger: WorkerTrigger,
+        conflict_resolver: ConflictResolver,
+    ) -> Result<SyncSummary> {
+        if !plan.has_work() {
+            tracing::debug!("SyncPlan 无操作，跳过 Worker 创建");
+            return Ok(SyncSummary::default());
+        }
+
+        let task_id = uuid::Uuid::new_v4().to_string();
+        let now = chrono::Utc::now().to_rfc3339();
+
+        let total_count = plan.uploads.len() as u32
+            + plan.downloads.len() as u32
+            + plan.delete_local.len() as u32
+            + plan.delete_remote.len() as u32
+            + plan.rename_remote.len() as u32
+            + plan.move_remote.len() as u32
+            + plan.rename_local.len() as u32
+            + plan.move_local.len() as u32
+            + plan.conflicts.len() as u32;
+
+        let task = SyncTask {
+            id: task_id.clone(),
+            trigger: trigger.clone(),
+            total_count,
+            completed_count: 0,
+            failed_count: 0,
+            status: WorkerStatus::Pending,
+            created_at: now.clone(),
+            updated_at: now,
+            finished_at: None,
+        };
+        self.db.create_sync_task(&task).await?;
+
+        let now_for_items = chrono::Utc::now().to_rfc3339();
+        self.create_task_items(&task_id, &plan, &now_for_items, &config.sync_mode)
+            .await?;
+
+        let _permit = self
+            .worker_semaphore
+            .acquire()
+            .await
+            .map_err(|e| SyncError::Internal(format!("获取 Worker 信号量失败: {}", e)))?;
+
+        let worker = Worker::new(
+            task_id.clone(),
+            trigger,
+            config,
+            plan,
+            self.db.clone(),
+            self.api.clone(),
+            self.file_locks.clone(),
+            self.ensured_dirs.clone(),
+            conflict_resolver,
+            self.event_sink.clone(),
+            self.shutdown_token.lock().unwrap().clone(),
+            #[cfg(feature = "windows-cfapi")]
+            self.platform_adapter.lock().unwrap().clone(),
+        );
+
+        let _ = self
+            .event_sink
+            .emit(crate::api::ffi_types::SyncEventFfi::WorkerStarted {
+                task_id: task_id.clone(),
+                trigger: task.trigger.as_str().to_string(),
+                upload_count: task.total_count,
+                download_count: 0,
+            })
+            .await;
+
+        self.active_count
+            .fetch_add(1, std::sync::atomic::Ordering::Relaxed);
+        let result = worker.run().await;
+        self.active_count
+            .fetch_sub(1, std::sync::atomic::Ordering::Relaxed);
+        result
+    }
+
+    /// 提交 Worker（后台运行）
+    pub async fn submit_background(
+        &self,
+        plan: SyncPlan,
+        config: WorkerConfig,
+        trigger: WorkerTrigger,
+        conflict_resolver: ConflictResolver,
+    ) -> Option<String> {
+        if !plan.has_work() {
+            return None;
+        }
+
+        let task_id = uuid::Uuid::new_v4().to_string();
+        let now = chrono::Utc::now().to_rfc3339();
+
+        let total_count = plan.uploads.len() as u32
+            + plan.downloads.len() as u32
+            + plan.delete_local.len() as u32
+            + plan.delete_remote.len() as u32
+            + plan.rename_remote.len() as u32
+            + plan.move_remote.len() as u32
+            + plan.rename_local.len() as u32
+            + plan.move_local.len() as u32
+            + plan.conflicts.len() as u32;
+
+        let task = SyncTask {
+            id: task_id.clone(),
+            trigger: trigger.clone(),
+            total_count,
+            completed_count: 0,
+            failed_count: 0,
+            status: WorkerStatus::Pending,
+            created_at: now.clone(),
+            updated_at: now,
+            finished_at: None,
+        };
+        if let Err(e) = self.db.create_sync_task(&task).await {
+            tracing::error!("创建同步任务记录失败: {}", e);
+        }
+
+        let now_for_items = chrono::Utc::now().to_rfc3339();
+        if let Err(e) = self
+            .create_task_items(&task_id, &plan, &now_for_items, &config.sync_mode)
+            .await
+        {
+            tracing::warn!("创建任务项记录失败: {}", e);
+        }
+
+        let tid = task_id.clone();
+        let trigger_str = trigger.as_str().to_string();
+        let upload_count = plan.uploads.len() as u32;
+        let download_count = plan.downloads.len() as u32;
+
+        let _ = self
+            .event_sink
+            .emit(crate::api::ffi_types::SyncEventFfi::WorkerStarted {
+                task_id: tid.clone(),
+                trigger: trigger_str,
+                upload_count,
+                download_count,
+            })
+            .await;
+
+        self.register_upload_paths(&plan);
+        let upload_paths_for_cleanup: Vec<String> = plan
+            .uploads
+            .iter()
+            .map(|a| a.relative_path.clone())
+            .collect();
+
+        let sem = self.worker_semaphore.clone();
+        let db = self.db.clone();
+        let api = self.api.clone();
+        let file_locks = self.file_locks.clone();
+        let ensured_dirs = self.ensured_dirs.clone();
+        let event_sink = self.event_sink.clone();
+        let shutdown_token = self.shutdown_token.lock().unwrap().clone();
+        let active_workers = self.active_workers.clone();
+        let active_upload_paths = self.active_upload_paths.clone();
+        let active_count = self.active_count.clone();
+        #[cfg(feature = "windows-cfapi")]
+        let platform_adapter = self.platform_adapter.lock().unwrap().clone();
+
+        self.active_count
+            .fetch_add(1, std::sync::atomic::Ordering::Relaxed);
+
+        let handle = tokio::spawn(async move {
+            let _permit = sem.acquire().await.unwrap();
+            let worker = Worker::new(
+                task_id.clone(),
+                trigger,
+                config,
+                plan,
+                db,
+                api,
+                file_locks,
+                ensured_dirs,
+                conflict_resolver,
+                event_sink,
+                shutdown_token,
+                #[cfg(feature = "windows-cfapi")]
+                platform_adapter,
+            );
+            if let Err(e) = worker.run().await {
+                tracing::error!("[{}] Worker后台执行失败: {}", task_id, e);
+            }
+            active_workers.remove(&task_id);
+            for path in &upload_paths_for_cleanup {
+                active_upload_paths.remove(path);
+            }
+            active_count.fetch_sub(1, std::sync::atomic::Ordering::Relaxed);
+        });
+
+        self.active_workers.insert(tid.clone(), handle);
+        Some(tid)
+    }
+
+    #[cfg(feature = "windows-cfapi")]
+    pub fn set_platform_adapter(&self, adapter: Arc<dyn PlaceholderCreator>) {
+        *self.platform_adapter.lock().unwrap() = Some(adapter);
+    }
+
+    /// 当前活跃 Worker 数（含阻塞型和后台型）
+    pub fn active_worker_count(&self) -> usize {
+        self.active_count.load(std::sync::atomic::Ordering::Relaxed) as usize
+    }
+
+    /// 检查指定相对路径是否正在上传中
+    pub fn is_uploading(&self, relative_path: &str) -> bool {
+        self.active_upload_paths.contains(relative_path)
+    }
+
+    /// 注册上传路径到去重集合
+    fn register_upload_paths(&self, plan: &SyncPlan) {
+        for action in &plan.uploads {
+            self.active_upload_paths
+                .insert(action.relative_path.clone());
+        }
+    }
+
+    /// 更新 shutdown token（引擎重启时调用）
+    pub fn update_shutdown_token(&self, token: CancellationToken) {
+        *self.shutdown_token.lock().unwrap() = token;
+    }
+
+    /// 终止所有活跃 Worker 并等待退出
+    pub async fn abort_all_workers(&self) {
+        let ids: Vec<String> = self
+            .active_workers
+            .iter()
+            .map(|e| e.key().clone())
+            .collect();
+        for id in ids {
+            if let Some((_, handle)) = self.active_workers.remove(&id) {
+                handle.abort();
+                let _ = handle.await;
+            }
+        }
+        self.active_upload_paths.clear();
+        self.active_count
+            .store(0, std::sync::atomic::Ordering::Relaxed);
+    }
+
+    /// 创建 task_item 记录（批量插入，单次持锁）
+    async fn create_task_items(
+        &self,
+        task_id: &str,
+        plan: &SyncPlan,
+        now: &str,
+        sync_mode: &SyncMode,
+    ) -> Result<()> {
+        let mut items: Vec<SyncTaskItem> = Vec::new();
+
+        for action in &plan.uploads {
+            items.push(SyncTaskItem {
+                id: 0,
+                task_id: task_id.to_string(),
+                relative_path: action.relative_path.clone(),
+                action_type: TaskActionType::Upload,
+                status: TaskItemStatus::Pending,
+                file_size: action.local_entry.as_ref().map(|l| l.size).unwrap_or(0),
+                error_message: None,
+                created_at: now.to_string(),
+                updated_at: now.to_string(),
+            });
+        }
+        for action in &plan.downloads {
+            let action_type = if matches!(sync_mode, SyncMode::MirrorWcf) {
+                TaskActionType::CreatePlaceholder
+            } else {
+                TaskActionType::Download
+            };
+            items.push(SyncTaskItem {
+                id: 0,
+                task_id: task_id.to_string(),
+                relative_path: action.relative_path.clone(),
+                action_type,
+                status: TaskItemStatus::Pending,
+                file_size: action.remote_entry.as_ref().map(|r| r.size).unwrap_or(0),
+                error_message: None,
+                created_at: now.to_string(),
+                updated_at: now.to_string(),
+            });
+        }
+        for action in &plan.delete_local {
+            items.push(SyncTaskItem {
+                id: 0,
+                task_id: task_id.to_string(),
+                relative_path: action.relative_path.clone(),
+                action_type: TaskActionType::DeleteLocal,
+                status: TaskItemStatus::Pending,
+                file_size: 0,
+                error_message: None,
+                created_at: now.to_string(),
+                updated_at: now.to_string(),
+            });
+        }
+        for action in &plan.delete_remote {
+            items.push(SyncTaskItem {
+                id: 0,
+                task_id: task_id.to_string(),
+                relative_path: action.relative_path.clone(),
+                action_type: TaskActionType::DeleteRemote,
+                status: TaskItemStatus::Pending,
+                file_size: 0,
+                error_message: None,
+                created_at: now.to_string(),
+                updated_at: now.to_string(),
+            });
+        }
+        for rename in &plan.rename_remote {
+            items.push(SyncTaskItem {
+                id: 0,
+                task_id: task_id.to_string(),
+                relative_path: format!(
+                    "{} -> {}",
+                    rename.old_relative_path, rename.new_relative_path
+                ),
+                action_type: TaskActionType::Rename,
+                status: TaskItemStatus::Pending,
+                file_size: 0,
+                error_message: None,
+                created_at: now.to_string(),
+                updated_at: now.to_string(),
+            });
+        }
+        for mov in &plan.move_remote {
+            items.push(SyncTaskItem {
+                id: 0,
+                task_id: task_id.to_string(),
+                relative_path: format!("{} -> {}", mov.old_relative_path, mov.new_relative_path),
+                action_type: TaskActionType::Move,
+                status: TaskItemStatus::Pending,
+                file_size: 0,
+                error_message: None,
+                created_at: now.to_string(),
+                updated_at: now.to_string(),
+            });
+        }
+        for conflict in &plan.conflicts {
+            items.push(SyncTaskItem {
+                id: 0,
+                task_id: task_id.to_string(),
+                relative_path: conflict.relative_path.clone(),
+                action_type: TaskActionType::ConflictResolve,
+                status: TaskItemStatus::Pending,
+                file_size: 0,
+                error_message: None,
+                created_at: now.to_string(),
+                updated_at: now.to_string(),
+            });
+        }
+        for action in &plan.rename_local {
+            items.push(SyncTaskItem {
+                id: 0,
+                task_id: task_id.to_string(),
+                relative_path: format!(
+                    "{} -> {}",
+                    action.old_relative_path, action.new_relative_path
+                ),
+                action_type: TaskActionType::Rename,
+                status: TaskItemStatus::Pending,
+                file_size: 0,
+                error_message: None,
+                created_at: now.to_string(),
+                updated_at: now.to_string(),
+            });
+        }
+        for action in &plan.move_local {
+            items.push(SyncTaskItem {
+                id: 0,
+                task_id: task_id.to_string(),
+                relative_path: format!(
+                    "{} -> {}",
+                    action.old_relative_path, action.new_relative_path
+                ),
+                action_type: TaskActionType::Move,
+                status: TaskItemStatus::Pending,
+                file_size: 0,
+                error_message: None,
+                created_at: now.to_string(),
+                updated_at: now.to_string(),
+            });
+        }
+
+        self.db.create_sync_task_items_batch(&items).await
+    }
+}
+
+fn num_cpus() -> usize {
+    std::thread::available_parallelism()
+        .map(|n| n.get())
+        .unwrap_or(4)
+}

native/sync-linux/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "sync-linux"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["lib"]
+
+[dependencies]
+# 不依赖 sync-core，避免循环依赖
+notify = { version = "7", features = ["macos_fsevent"] }
+walkdir = "2"
+thiserror = { workspace = true }
+tracing = "0.1"
+anyhow = { workspace = true }
+tokio = { workspace = true }
+async-trait = "0.1"

native/sync-linux/src/lib.rs

@@ -0,0 +1,80 @@
+#![cfg(target_os = "linux")]
+
+//! Linux 平台适配层
+//!
+//! 提供文件系统监听 (notify/inotify) 用于：
+//! - 实时检测本地文件变更
+//! - inotify 限制检测与配置
+//! - 混合模式（事件+轮询）切换
+
+use std::path::Path;
+
+pub struct LinuxAdapter {
+    watcher: Option<notify::RecommendedWatcher>,
+}
+
+impl Default for LinuxAdapter {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl LinuxAdapter {
+    pub fn new() -> Self {
+        Self { watcher: None }
+    }
+
+    /// 启动文件监听 (Phase 3)
+    pub fn start_watching(&mut self, _root: &Path) -> anyhow::Result<()> {
+        // Phase 3: 实现 notify 监听
+        Ok(())
+    }
+
+    /// 停止监听
+    pub fn stop_watching(&mut self) -> anyhow::Result<()> {
+        if let Some(w) = self.watcher.take() {
+            drop(w);
+        }
+        Ok(())
+    }
+}
+
+/// inotify 限制检测
+pub struct InotifyConfig;
+
+impl InotifyConfig {
+    pub fn check_limits() -> InotifyStatus {
+        let max_watches = std::fs::read_to_string("/proc/sys/fs/inotify/max_user_watches")
+            .ok()
+            .and_then(|s| s.trim().parse().ok())
+            .unwrap_or(8192);
+
+        let max_user_instances = std::fs::read_to_string("/proc/sys/fs/inotify/max_user_instances")
+            .ok()
+            .and_then(|s| s.trim().parse().ok())
+            .unwrap_or(128);
+
+        InotifyStatus {
+            max_watches,
+            max_user_instances,
+            recommendation: if max_watches < 524288 {
+                Some("建议执行: echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p".to_string())
+            } else {
+                None
+            },
+        }
+    }
+}
+
+pub struct InotifyStatus {
+    pub max_watches: u64,
+    pub max_user_instances: u64,
+    pub recommendation: Option<String>,
+}
+
+/// 占位符信息 (Linux 不使用，保持接口一致)
+pub struct PlaceholderEntry {
+    pub relative_path: String,
+    pub file_size: u64,
+    pub is_dir: bool,
+}

native/sync-windows/Cargo.toml

@@ -0,0 +1,29 @@
+[package]
+name = "sync-windows"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["lib"]
+
+[dependencies]
+windows = { version = "0.58", features = [
+    "Win32_Foundation",
+    "Win32_Storage_CloudFilters",
+    "Win32_Storage_FileSystem",
+    "Win32_System_Registry",
+    "Win32_System_CorrelationVector",
+    "Win32_System_IO",
+] }
+thiserror = { workspace = true }
+tracing = "0.1"
+anyhow = { workspace = true }
+tokio = { workspace = true }
+async-trait = "0.1"
+serde = { workspace = true }
+serde_json = { workspace = true }
+uuid = { workspace = true }
+
+[features]
+default = ["cfapi"]
+cfapi = []

native/sync-windows/src/lib.rs

@@ -0,0 +1,455 @@
+#![cfg(target_os = "windows")]
+
+//! Windows 平台适配层 - Cloud Filter API (CFApi) 集成
+
+use std::ffi::OsStr;
+use std::os::windows::ffi::OsStrExt;
+use std::os::windows::io::AsRawHandle;
+use std::path::Path;
+use tokio::sync::mpsc;
+
+use windows::core::*;
+use windows::Win32::Foundation::*;
+use windows::Win32::Storage::CloudFilters::*;
+use windows::Win32::Storage::FileSystem::*;
+
+/// 全局回调通道发送端（CFApi 回调 → 异步运行时）
+/// 使用 Mutex 包装以支持重连时替换
+static CALLBACK_SENDER: std::sync::Mutex<Option<mpsc::Sender<FetchDataRequest>>> =
+    std::sync::Mutex::new(None);
+
+/// CFApi FETCH_DATA 回调请求数据
+#[derive(Debug, Clone)]
+pub struct FetchDataRequest {
+    pub connection_key: i64,
+    pub transfer_key: i64,
+    pub file_identity: Vec<u8>,
+    pub required_offset: i64,
+    pub required_length: i64,
+}
+
+pub struct WindowsAdapter {
+    connection_key: Option<CF_CONNECTION_KEY>,
+    callback_rx: Option<mpsc::Receiver<FetchDataRequest>>,
+}
+
+/// 占位符创建信息
+#[derive(Debug, Clone)]
+pub struct PlaceholderEntry {
+    pub relative_path: String,
+    pub file_size: u64,
+    pub is_dir: bool,
+    pub file_identity: Vec<u8>,
+}
+
+impl Default for WindowsAdapter {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl WindowsAdapter {
+    pub fn new() -> Self {
+        Self {
+            connection_key: None,
+            callback_rx: None,
+        }
+    }
+
+    /// 注册同步根目录（先清理残留注册）
+    pub fn register_sync_root(
+        &self,
+        root_path: &Path,
+        provider_name: &str,
+        provider_version: &str,
+    ) -> anyhow::Result<()> {
+        unsafe {
+            let sync_root_path = to_pcwstr(root_path);
+
+            // 先尝试注销残留的同步根（忽略未注册的错误）
+            let unregister_result = CfUnregisterSyncRoot(PCWSTR(sync_root_path.as_ptr()));
+            if let Err(e) = unregister_result {
+                tracing::debug!("注销旧同步根（可忽略）: {}", e);
+            }
+
+            let provider_name_w = to_pcwstr_str(provider_name);
+            let provider_version_w = to_pcwstr_str(provider_version);
+
+            let provider_name_pcw = PCWSTR(provider_name_w.as_ptr());
+            let provider_version_pcw = PCWSTR(provider_version_w.as_ptr());
+
+            let provider_id = GUID::from_values(
+                0x4E_5F_8C_D7, 0xA2_B1, 0x43_9F, [0x8C, 0x12, 0xD5, 0xE7, 0xF3, 0x21, 0x9A, 0xB4],
+            );
+
+            let root_identity = b"cloudreve-sync-root".to_vec();
+
+            let registration = CF_SYNC_REGISTRATION {
+                StructSize: std::mem::size_of::<CF_SYNC_REGISTRATION>() as u32,
+                ProviderName: provider_name_pcw,
+                ProviderVersion: provider_version_pcw,
+                SyncRootIdentity: root_identity.as_ptr() as *const std::os::raw::c_void,
+                SyncRootIdentityLength: root_identity.len() as u32,
+                FileIdentity: std::ptr::null(),
+                FileIdentityLength: 0,
+                ProviderId: provider_id,
+            };
+
+            let policies = CF_SYNC_POLICIES {
+                StructSize: std::mem::size_of::<CF_SYNC_POLICIES>() as u32,
+                Hydration: CF_HYDRATION_POLICY {
+                    Primary: CF_HYDRATION_POLICY_PARTIAL,
+                    Modifier: CF_HYDRATION_POLICY_MODIFIER_NONE,
+                },
+                Population: CF_POPULATION_POLICY {
+                    Primary: CF_POPULATION_POLICY_ALWAYS_FULL,
+                    Modifier: CF_POPULATION_POLICY_MODIFIER_NONE,
+                },
+                InSync: CF_INSYNC_POLICY_NONE,
+                HardLink: CF_HARDLINK_POLICY_NONE,
+                PlaceholderManagement: CF_PLACEHOLDER_MANAGEMENT_POLICY_DEFAULT,
+            };
+
+            CfRegisterSyncRoot(
+                PCWSTR(sync_root_path.as_ptr()),
+                &registration,
+                &policies,
+                CF_REGISTER_FLAG_UPDATE,
+            )?;
+
+            tracing::info!("同步根已注册: {}", root_path.display());
+            Ok(())
+        }
+    }
+
+    /// 连接同步根，注册回调（先断开残留连接）
+    pub fn connect_sync_root(&mut self, root_path: &Path) -> anyhow::Result<()> {
+        // 先断开残留的旧连接
+        if let Some(key) = self.connection_key.take() {
+            unsafe {
+                let _ = CfDisconnectSyncRoot(key);
+            }
+            tracing::debug!("已断开旧的同步根连接");
+        }
+
+        let (tx, rx) = mpsc::channel(256);
+        // 替换全局回调发送端
+        {
+            let mut guard = CALLBACK_SENDER.lock().unwrap();
+            *guard = Some(tx);
+        }
+
+        unsafe {
+            let sync_root_path = to_pcwstr(root_path);
+
+            let callbacks = [
+                CF_CALLBACK_REGISTRATION {
+                    Type: CF_CALLBACK_TYPE_FETCH_DATA,
+                    Callback: Some(cf_fetch_data_callback),
+                },
+                CF_CALLBACK_REGISTRATION {
+                    Type: CF_CALLBACK_TYPE_CANCEL_FETCH_DATA,
+                    Callback: Some(cf_cancel_fetch_callback),
+                },
+                CF_CALLBACK_REGISTRATION {
+                    Type: CF_CALLBACK_TYPE_NONE,
+                    Callback: None,
+                },
+            ];
+
+            let connection_key = CfConnectSyncRoot(
+                PCWSTR(sync_root_path.as_ptr()),
+                callbacks.as_ptr(),
+                None,
+                CF_CONNECT_FLAG_NONE,
+            )?;
+
+            self.connection_key = Some(connection_key);
+            self.callback_rx = Some(rx);
+
+            tracing::info!("同步根已连接: {}", root_path.display());
+        }
+
+        Ok(())
+    }
+
+    /// 取走回调接收端（供 sync-core 消费）
+    pub fn take_callback_receiver(&mut self) -> Option<mpsc::Receiver<FetchDataRequest>> {
+        self.callback_rx.take()
+    }
+
+    /// 创建占位符文件（批量）
+    pub fn create_placeholders(
+        &self,
+        base_dir: &Path,
+        entries: &[PlaceholderEntry],
+    ) -> anyhow::Result<u32> {
+        if entries.is_empty() {
+            return Ok(0);
+        }
+
+        unsafe {
+            let base_path = to_pcwstr(base_dir);
+
+            let mut placeholders: Vec<CF_PLACEHOLDER_CREATE_INFO> = entries
+                .iter()
+                .map(|entry| {
+                    let relative_name_w = to_pcwstr_str(&entry.relative_path);
+                    let file_attributes = if entry.is_dir {
+                        FILE_ATTRIBUTE_DIRECTORY.0
+                    } else {
+                        FILE_ATTRIBUTE_NORMAL.0
+                    };
+
+                    CF_PLACEHOLDER_CREATE_INFO {
+                        RelativeFileName: PCWSTR(relative_name_w.as_ptr()),
+                        FsMetadata: CF_FS_METADATA {
+                            BasicInfo: FILE_BASIC_INFO {
+                                CreationTime: 0,
+                                LastAccessTime: 0,
+                                LastWriteTime: 0,
+                                ChangeTime: 0,
+                                FileAttributes: file_attributes,
+                            },
+                            FileSize: entry.file_size as i64,
+                        },
+                        FileIdentity: entry.file_identity.as_ptr() as *const std::os::raw::c_void,
+                        FileIdentityLength: entry.file_identity.len() as u32,
+                        Flags: CF_PLACEHOLDER_CREATE_FLAG_NONE,
+                        Result: S_OK,
+                        CreateUsn: 0,
+                    }
+                })
+                .collect();
+
+            let mut entries_processed: u32 = 0;
+
+            CfCreatePlaceholders(
+                PCWSTR(base_path.as_ptr()),
+                &mut placeholders,
+                CF_CREATE_FLAG_NONE,
+                Some(&mut entries_processed),
+            )?;
+
+            tracing::debug!("创建占位符: {} 个", entries_processed);
+            Ok(entries_processed)
+        }
+    }
+
+    /// 创建单个占位符文件
+    pub fn create_single_placeholder(
+        &self,
+        base_dir: &Path,
+        file_name: &str,
+        file_size: u64,
+        file_identity: &[u8],
+    ) -> anyhow::Result<()> {
+        let entry = PlaceholderEntry {
+            relative_path: file_name.to_string(),
+            file_size,
+            is_dir: false,
+            file_identity: file_identity.to_vec(),
+        };
+        self.create_placeholders(base_dir, &[entry])?;
+        Ok(())
+    }
+
+    /// 水合文件
+    pub fn hydrate_placeholder(&self, file_path: &Path) -> anyhow::Result<()> {
+        unsafe {
+            let file = std::fs::File::open(file_path)?;
+            let handle = HANDLE(file.as_raw_handle() as *mut _);
+
+            CfHydratePlaceholder(
+                handle,
+                0,
+                -1i64,
+                CF_HYDRATE_FLAG_NONE,
+                None,
+            )?;
+
+            tracing::debug!("水合完成: {}", file_path.display());
+            Ok(())
+        }
+    }
+
+    /// 脱水文件
+    pub fn dehydrate_placeholder(&self, file_path: &Path) -> anyhow::Result<()> {
+        unsafe {
+            let file = std::fs::File::open(file_path)?;
+            let handle = HANDLE(file.as_raw_handle() as *mut _);
+
+            CfDehydratePlaceholder(
+                handle,
+                0,
+                -1i64,
+                CF_DEHYDRATE_FLAG_NONE,
+                None,
+            )?;
+
+            tracing::debug!("脱水完成: {}", file_path.display());
+            Ok(())
+        }
+    }
+
+    /// 断开同步根连接
+    pub fn disconnect(&mut self) -> anyhow::Result<()> {
+        if let Some(key) = self.connection_key.take() {
+            unsafe {
+                CfDisconnectSyncRoot(key)?;
+            }
+            tracing::info!("同步根已断开");
+        }
+        self.callback_rx = None;
+        Ok(())
+    }
+
+    /// 通过 CfExecute 将数据推送回 CFApi 完成水合
+    /// 这是由内核层写入文件，绕过应用锁
+    pub fn fulfill_fetch_data(
+        connection_key: i64,
+        transfer_key: i64,
+        data: &[u8],
+        offset: i64,
+    ) -> anyhow::Result<()> {
+        unsafe {
+            let op_info = CF_OPERATION_INFO {
+                StructSize: std::mem::size_of::<CF_OPERATION_INFO>() as u32,
+                Type: CF_OPERATION_TYPE_TRANSFER_DATA,
+                ConnectionKey: CF_CONNECTION_KEY(connection_key),
+                TransferKey: transfer_key,
+                CorrelationVector: std::ptr::null(),
+                SyncStatus: std::ptr::null(),
+                RequestKey: 0,
+            };
+
+            let mut op_params = CF_OPERATION_PARAMETERS {
+                ParamSize: std::mem::size_of::<CF_OPERATION_PARAMETERS>() as u32,
+                Anonymous: CF_OPERATION_PARAMETERS_0 {
+                    TransferData: CF_OPERATION_PARAMETERS_0_6 {
+                        Flags: CF_OPERATION_TRANSFER_DATA_FLAG_NONE,
+                        CompletionStatus: NTSTATUS(0), // STATUS_SUCCESS
+                        Buffer: data.as_ptr() as *const core::ffi::c_void,
+                        Offset: offset,
+                        Length: data.len() as i64,
+                    },
+                },
+            };
+
+            CfExecute(&op_info, &mut op_params)?;
+            tracing::debug!("CfExecute TRANSFER_DATA 成功: offset={}, len={}", offset, data.len());
+            Ok(())
+        }
+    }
+
+    /// 通过 CfExecute 报告水合失败
+    pub fn reject_fetch_data(
+        connection_key: i64,
+        transfer_key: i64,
+    ) -> anyhow::Result<()> {
+        unsafe {
+            let op_info = CF_OPERATION_INFO {
+                StructSize: std::mem::size_of::<CF_OPERATION_INFO>() as u32,
+                Type: CF_OPERATION_TYPE_TRANSFER_DATA,
+                ConnectionKey: CF_CONNECTION_KEY(connection_key),
+                TransferKey: transfer_key,
+                CorrelationVector: std::ptr::null(),
+                SyncStatus: std::ptr::null(),
+                RequestKey: 0,
+            };
+
+            let mut op_params = CF_OPERATION_PARAMETERS {
+                ParamSize: std::mem::size_of::<CF_OPERATION_PARAMETERS>() as u32,
+                Anonymous: CF_OPERATION_PARAMETERS_0 {
+                    TransferData: CF_OPERATION_PARAMETERS_0_6 {
+                        Flags: CF_OPERATION_TRANSFER_DATA_FLAG_NONE,
+                        CompletionStatus: NTSTATUS(0xC000_0001_u32 as i32), // STATUS_UNSUCCESSFUL
+                        Buffer: std::ptr::null(),
+                        Offset: 0,
+                        Length: 0,
+                    },
+                },
+            };
+
+            CfExecute(&op_info, &mut op_params)?;
+            Ok(())
+        }
+    }
+}
+
+/// CFApi 回调：水合请求 — 将请求发送到全局通道
+unsafe extern "system" fn cf_fetch_data_callback(
+    callback_info: *const CF_CALLBACK_INFO,
+    callback_parameters: *const CF_CALLBACK_PARAMETERS,
+) {
+    if callback_info.is_null() {
+        return;
+    }
+    let info = &*callback_info;
+
+    // 提取 FileIdentity
+    let file_identity = if info.FileIdentityLength > 0 && !info.FileIdentity.is_null() {
+        std::slice::from_raw_parts(
+            info.FileIdentity as *const u8,
+            info.FileIdentityLength as usize,
+        ).to_vec()
+    } else {
+        Vec::new()
+    };
+
+    // 提取请求范围
+    let (required_offset, required_length) = if callback_parameters.is_null() {
+        (0i64, -1i64)
+    } else {
+        let params = &*callback_parameters;
+        let fetch = &params.Anonymous.FetchData;
+        (fetch.RequiredFileOffset, fetch.RequiredLength)
+    };
+
+    let request = FetchDataRequest {
+        connection_key: info.ConnectionKey.0,
+        transfer_key: info.TransferKey,
+        file_identity,
+        required_offset,
+        required_length,
+    };
+
+    tracing::debug!(
+        "CFApi 水合请求: transfer_key={}, identity_len={}, offset={}, length={}",
+        info.TransferKey,
+        info.FileIdentityLength,
+        required_offset,
+        required_length,
+    );
+
+    if let Ok(guard) = CALLBACK_SENDER.lock() {
+        if let Some(ref sender) = *guard {
+            let _ = sender.blocking_send(request);
+        }
+    }
+}
+
+/// CFApi 回调：取消水合
+unsafe extern "system" fn cf_cancel_fetch_callback(
+    callback_info: *const CF_CALLBACK_INFO,
+    _callback_parameters: *const CF_CALLBACK_PARAMETERS,
+) {
+    if callback_info.is_null() {
+        return;
+    }
+    tracing::debug!("CFApi 取消水合请求: transfer_key={}", (*callback_info).TransferKey);
+}
+
+/// Path → wide null-terminated Vec<u16>
+fn to_pcwstr(path: &Path) -> Vec<u16> {
+    let mut wide: Vec<u16> = OsStr::new(path).encode_wide().collect();
+    wide.push(0);
+    wide
+}
+
+/// &str → wide null-terminated Vec<u16>
+fn to_pcwstr_str(s: &str) -> Vec<u16> {
+    let mut wide: Vec<u16> = s.encode_utf16().collect();
+    wide.push(0);
+    wide
+}

pubspec.lock

@@ -5,18 +5,18 @@ packages:
     dependency: transitive
     description:
       name: _fe_analyzer_shared
-      sha256: "0b2f2bd91ba804e53a61d757b986f89f1f9eaed5b11e4b2f5a2468d86d6c9fc7"
+      sha256: "8d7ff3948166b8ec5da0fbb5962000926b8e02f2ed9b3e51d1738905fbd4c98d"
       url: "https://pub.dev"
     source: hosted
-    version: "67.0.0"
+    version: "93.0.0"
   analyzer:
     dependency: transitive
     description:
       name: analyzer
-      sha256: "37577842a27e4338429a1cbc32679d508836510b056f1eedf0c8d20e39c1383d"
+      sha256: de7148ed2fcec579b19f122c1800933dfa028f6d9fd38a152b04b1516cec120b
       url: "https://pub.dev"
     source: hosted
-    version: "6.4.1"
+    version: "10.0.1"
   animations:
     dependency: "direct main"
     description:
@@ -69,18 +69,26 @@ packages:
     dependency: transitive
     description:
       name: build
-      sha256: "80184af8b6cb3e5c1c4ec6d8544d27711700bc3e6d2efad04238c7b5290889f0"
+      sha256: a156715e7cd728130c592f30552575908aae5b100005fbc1f0fb16b3c03a3d10
       url: "https://pub.dev"
     source: hosted
-    version: "2.4.1"
+    version: "4.0.6"
+  build_cli_annotations:
+    dependency: transitive
+    description:
+      name: build_cli_annotations
+      sha256: e563c2e01de8974566a1998410d3f6f03521788160a02503b0b1f1a46c7b3d95
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
   build_config:
     dependency: transitive
     description:
       name: build_config
-      sha256: "4ae2de3e1e67ea270081eaee972e1bd8f027d459f249e0f1186730784c2e7e33"
+      sha256: "4070d2a59f8eec34c97c86ceb44403834899075f66e8a9d59706f8e7834f6f71"
       url: "https://pub.dev"
     source: hosted
-    version: "1.1.2"
+    version: "1.3.0"
   build_daemon:
     dependency: transitive
     description:
@@ -89,30 +97,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.1.1"
-  build_resolvers:
-    dependency: transitive
-    description:
-      name: build_resolvers
-      sha256: "339086358431fa15d7eca8b6a36e5d783728cf025e559b834f4609a1fcfb7b0a"
-      url: "https://pub.dev"
-    source: hosted
-    version: "2.4.2"
   build_runner:
     dependency: "direct dev"
     description:
       name: build_runner
-      sha256: "028819cfb90051c6b5440c7e574d1896f8037e3c96cf17aaeb054c9311cfbf4d"
+      sha256: "1523ce62448ebac2c15a8ba5fbad8acac169788658a7dd2a1c2d9c2a9318b9a6"
       url: "https://pub.dev"
     source: hosted
-    version: "2.4.13"
-  build_runner_core:
-    dependency: transitive
-    description:
-      name: build_runner_core
-      sha256: f8126682b87a7282a339b871298cc12009cb67109cfa1614d6436fb0289193e0
-      url: "https://pub.dev"
-    source: hosted
-    version: "7.3.2"
+    version: "2.15.0"
   built_collection:
     dependency: transitive
     description:
@@ -193,14 +185,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.0"
-  code_builder:
-    dependency: transitive
-    description:
-      name: code_builder
-      sha256: "6a6cab2ba4680d6423f34a9b972a4c9a94ebe1b62ecec4e1a1f2cba91fd1319d"
-      url: "https://pub.dev"
-    source: hosted
-    version: "4.11.1"
   code_text_field:
     dependency: "direct main"
     description:
@@ -253,10 +237,10 @@ packages:
     dependency: transitive
     description:
       name: dart_style
-      sha256: "99e066ce75c89d6b29903d788a7bb9369cf754f7b24bf70bf4b6d6d6b26853b9"
+      sha256: "29f7ecc274a86d32920b1d9cfc7502fa87220da41ec60b55f329559d5732e2b2"
       url: "https://pub.dev"
     source: hosted
-    version: "2.3.6"
+    version: "3.1.7"
   dbus:
     dependency: transitive
     description:
@@ -435,6 +419,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.34"
+  flutter_rust_bridge:
+    dependency: "direct main"
+    description:
+      name: flutter_rust_bridge
+      sha256: e87d6b9ee934dcd24a128ccb2bd91905d2d5fe5c06245d6a8f5477d4907a437a
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.12.0"
   flutter_single_instance:
     dependency: "direct main"
     description:
@@ -461,22 +453,22 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  freezed:
+    dependency: "direct dev"
+    description:
+      name: freezed
+      sha256: f23ea33b3863f119b58ed1b586e881a46bd28715ddcc4dbc33104524e3434131
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.5"
   freezed_annotation:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: freezed_annotation
       sha256: "7294967ff0a6d98638e7acb774aac3af2550777accd8149c90af5b014e6d44d8"
       url: "https://pub.dev"
     source: hosted
     version: "3.1.0"
-  frontend_server_client:
-    dependency: transitive
-    description:
-      name: frontend_server_client
-      sha256: f64a0333a82f30b0cca061bc3d143813a486dc086b574bfb233b7c1372427694
-      url: "https://pub.dev"
-    source: hosted
-    version: "4.0.0"
   glob:
     dependency: transitive
     description:
@@ -549,14 +541,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.1.0"
-  hive_generator:
-    dependency: "direct dev"
-    description:
-      name: hive_generator
-      sha256: "06cb8f58ace74de61f63500564931f9505368f45f98958bd7a6c35ba24159db4"
-      url: "https://pub.dev"
-    source: hosted
-    version: "2.0.1"
   hooks:
     dependency: transitive
     description:
@@ -701,14 +685,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.1"
-  js:
-    dependency: transitive
-    description:
-      name: js
-      sha256: "53385261521cc4a0c4658fd0ad07a7d14591cf8fc33abbceae306ddb974888dc"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.7.2"
   json_annotation:
     dependency: "direct main"
     description:
@@ -721,10 +697,10 @@ packages:
     dependency: "direct dev"
     description:
       name: json_serializable
-      sha256: ea1432d167339ea9b5bb153f0571d0039607a873d6e04e0117af043f14a1fd4b
+      sha256: "5b89c1e32ae3840bb20a1b3434e3a590173ad3cb605896fb0f60487ce2f8104e"
       url: "https://pub.dev"
     source: hosted
-    version: "6.8.0"
+    version: "6.11.4"
   leak_tracker:
     dependency: transitive
     description:
@@ -1446,18 +1422,18 @@ packages:
     dependency: transitive
     description:
       name: source_gen
-      sha256: "14658ba5f669685cd3d63701d01b31ea748310f7ab854e471962670abcf57832"
+      sha256: ec37cc0e6694374cbef59ed79685572c870a54ede6fa30a3e420feb3adffea02
       url: "https://pub.dev"
     source: hosted
-    version: "1.5.0"
+    version: "4.2.3"
   source_helper:
     dependency: transitive
     description:
       name: source_helper
-      sha256: "86d247119aedce8e63f4751bd9626fc9613255935558447569ad42f9f5b48b3c"
+      sha256: "4227d54ceefd0bb8ca4c8fcb96e1719dc53f1ee1b6e2ca9d7a6069da160e4eae"
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.5"
+    version: "1.3.12"
   source_span:
     dependency: transitive
     description:
@@ -1562,14 +1538,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.7.10"
-  timing:
-    dependency: transitive
-    description:
-      name: timing
-      sha256: "62ee18aca144e4a9f29d212f5a4c6a053be252b895ab14b5821996cff4ed90fe"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.0.2"
   tray_manager:
     dependency: "direct main"
     description:
@@ -1667,7 +1635,7 @@ packages:
     source: hosted
     version: "3.1.5"
   uuid:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: uuid
       sha256: "1fef9e8e11e2991bb773070d4656b7bd5d850967a2456cfc83cf47925ba79489"
@@ -1827,7 +1795,7 @@ packages:
     source: hosted
     version: "1.1.0"
   xml:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: xml
       sha256: "971043b3a0d3da28727e40ed3e0b5d18b742fa5a68665cca88e74b7876d5e025"

pubspec.yaml

@@ -16,7 +16,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 1.3.1+2
+version: 1.3.2+3
 
 environment:
   sdk: ^3.11.4
@@ -93,6 +93,7 @@ dependencies:
   image_picker: ^1.2.2
   qr_flutter: ^4.1.0
   webview_flutter: ^4.13.0
+  xml: ^6.6.1
 
   # 桌面端
   window_manager: ^0.5.0
@@ -103,6 +104,9 @@ dependencies:
   crypto: ^3.0.7
   desktop_drop: ^0.7.1
   cross_file: ^0.3.5+2
+  freezed_annotation: ^3.1.0
+  flutter_rust_bridge: ^2.12.0
+  uuid: ^4.5.3
 
 dev_dependencies:
   flutter_test:
@@ -116,8 +120,8 @@ dev_dependencies:
   flutter_lints: ^6.0.0
   build_runner: ^2.4.7
   json_serializable: ^6.7.1
-  hive_generator: ^2.0.1
   flutter_launcher_icons: ^0.13.1
+  freezed: ^3.1.0
 
 flutter_launcher_icons:
   android: "launcher_icon"

test/core/utils/file_utils_test.dart

@@ -0,0 +1,32 @@
+import 'package:cloudreve4_flutter/core/utils/file_utils.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('FileUtils', () {
+    test('decodePathForDisplay decodes encoded Chinese segments', () {
+      expect(
+        FileUtils.decodePathForDisplay(
+          '/%E4%B8%AD%E6%96%87/%E8%B5%84%E6%96%99',
+        ),
+        '/\u4e2d\u6587/\u8d44\u6599',
+      );
+    });
+
+    test('decodePathForDisplay leaves malformed percent sequences safe', () {
+      expect(FileUtils.decodePathForDisplay('/100%/reports'), '/100%/reports');
+    });
+
+    test('toCloudreveUriWithQuery encodes query values', () {
+      final uri = FileUtils.toCloudreveUriWithQuery('/folder', {
+        'name': '\u4e2d\u6587 \u6587\u6863',
+      });
+
+      expect(uri, contains('cloudreve://my/folder?name='));
+      expect(uri, contains('%E4%B8%AD%E6%96%87'));
+      expect(
+        Uri.parse(uri).queryParameters['name'],
+        '\u4e2d\u6587 \u6587\u6863',
+      );
+    });
+  });
+}

test/widget_test.dart

@@ -0,0 +1 @@
+void main() {}

windows/CMakeLists.txt

@@ -53,6 +53,61 @@ add_subdirectory(${FLUTTER_MANAGED_DIR})
 add_subdirectory("runner")
 
 
+# media_kit_libs_windows_video downloads its native archives with CMake's
+# file(DOWNLOAD). In some Windows network/proxy setups that leaves 0-byte files
+# without surfacing the download failure, so prefetch the exact archives with
+# PowerShell and let the plugin's own CMake verify/use them.
+function(ENSURE_WINDOWS_ARCHIVE URL MD5 OUTPUT_PATH)
+  string(TOLOWER "${MD5}" EXPECTED_MD5)
+  if(EXISTS "${OUTPUT_PATH}")
+    file(MD5 "${OUTPUT_PATH}" CURRENT_MD5)
+    string(TOLOWER "${CURRENT_MD5}" CURRENT_MD5)
+    if(EXPECTED_MD5 STREQUAL CURRENT_MD5)
+      return()
+    endif()
+    file(REMOVE "${OUTPUT_PATH}")
+  endif()
+
+  find_program(POWERSHELL_EXE powershell.exe)
+  if(NOT POWERSHELL_EXE)
+    find_program(POWERSHELL_EXE pwsh)
+  endif()
+  if(NOT POWERSHELL_EXE)
+    message(FATAL_ERROR "PowerShell is required to download ${URL}")
+  endif()
+
+  get_filename_component(OUTPUT_DIR "${OUTPUT_PATH}" DIRECTORY)
+  file(MAKE_DIRECTORY "${OUTPUT_DIR}")
+
+  message(STATUS "Downloading ${URL}")
+  execute_process(
+    COMMAND "${POWERSHELL_EXE}" -NoProfile -ExecutionPolicy Bypass -Command
+      "$ProgressPreference='SilentlyContinue'; Invoke-WebRequest -Uri '${URL}' -OutFile '${OUTPUT_PATH}' -UseBasicParsing"
+    RESULT_VARIABLE DOWNLOAD_RESULT
+  )
+  if(NOT DOWNLOAD_RESULT EQUAL 0)
+    message(FATAL_ERROR "Failed to download ${URL}")
+  endif()
+
+  file(MD5 "${OUTPUT_PATH}" CURRENT_MD5)
+  string(TOLOWER "${CURRENT_MD5}" CURRENT_MD5)
+  if(NOT EXPECTED_MD5 STREQUAL CURRENT_MD5)
+    file(REMOVE "${OUTPUT_PATH}")
+    message(FATAL_ERROR "Downloaded ${OUTPUT_PATH} failed MD5 check")
+  endif()
+endfunction()
+
+ENSURE_WINDOWS_ARCHIVE(
+  "https://github.com/media-kit/libmpv-win32-video-build/releases/download/2023-09-24/mpv-dev-x86_64-20230924-git-652a1dd.7z"
+  "a832ef24b3a6ff97cd2560b5b9d04cd8"
+  "${CMAKE_BINARY_DIR}/mpv-dev-x86_64-20230924-git-652a1dd.7z"
+)
+ENSURE_WINDOWS_ARCHIVE(
+  "https://github.com/alexmercerind/flutter-windows-ANGLE-OpenGL-ES/releases/download/v1.0.1/ANGLE.7z"
+  "e866f13e8d552348058afaafe869b1ed"
+  "${CMAKE_BINARY_DIR}/ANGLE.7z"
+)
+
 # Generated plugin build rules, which manage building the plugins and adding
 # them to the application.
 include(flutter/generated_plugins.cmake)
@@ -107,3 +162,61 @@ install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
 install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
   CONFIGURATIONS Profile;Release
   COMPONENT Runtime)
+
+# === Rust Sync Engine ===
+find_program(CARGO_CMD cargo
+    PATHS
+        "$ENV{USERPROFILE}\\.cargo\\bin"
+        "$ENV{HOME}\\.cargo\\bin"
+        "$ENV{CARGO_HOME}\\bin"
+    NO_DEFAULT_PATH
+)
+if(NOT CARGO_CMD)
+    find_program(CARGO_CMD cargo)
+endif()
+
+if(NOT CARGO_CMD)
+    message(WARNING "cargo not found, skipping Rust sync engine build")
+else()
+    set(SYNC_CORE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../native")
+    set(RUST_TARGET_DIR "${CMAKE_BINARY_DIR}/rust_target")
+
+    # 1. 编译时间戳文件
+    set(RUST_BUILD_STAMP "${CMAKE_CURRENT_BINARY_DIR}/sync_core_build.stamp")
+
+    # 2. 核心修复
+    # 不管是 Debug 还是 Release，我们都同时通知 Cargo 去检查这两个配置。
+    # 这样没有任何动态变量，参数数量是死死固定的，Cargo 100% 不会报错。
+    add_custom_command(
+        OUTPUT "${RUST_BUILD_STAMP}"
+        COMMAND ${CMAKE_COMMAND} -E make_directory "${RUST_TARGET_DIR}"
+
+        # 无论如何，都去编译 Debug（供 flutter run 使用）
+        COMMAND ${CARGO_CMD} build
+            --manifest-path "${SYNC_CORE_DIR}/Cargo.toml"
+            --target-dir "${RUST_TARGET_DIR}"
+            --features sync-core/windows-cfapi
+
+        # 无论如何，都去编译 Release（供 flutter build 使用）
+        COMMAND ${CARGO_CMD} build --release
+            --manifest-path "${SYNC_CORE_DIR}/Cargo.toml"
+            --target-dir "${RUST_TARGET_DIR}"
+            --features sync-core/windows-cfapi
+
+        COMMAND ${CMAKE_COMMAND} -E touch "${RUST_BUILD_STAMP}"
+        COMMENT "Building Rust sync engine (Debug & Release)..."
+        VERBATIM
+    )
+
+    # 3. 让目标依赖时间戳
+    add_custom_target(sync_core_build DEPENDS "${RUST_BUILD_STAMP}")
+    add_dependencies(${BINARY_NAME} sync_core_build)
+
+    # 4. 动态选择文件夹名称表达式（这个表达式只在安装阶段求值，安全可靠）
+    set(CONFIG_DIR_EXPR "$<IF:$<OR:$<CONFIG:Release>,$<CONFIG:Profile>>,release,debug>")
+
+    # 5. 动态选择 dll 路径进行安装复制
+    install(FILES "${RUST_TARGET_DIR}/${CONFIG_DIR_EXPR}/sync_core.dll"
+        DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+        COMPONENT Runtime)
+endif()

windows/runner/CMakeLists.txt

@@ -38,3 +38,4 @@ target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
 
 # Run the Flutter tool portions of the build. This must not be removed.
 add_dependencies(${BINARY_NAME} flutter_assemble)
+

windows/runner/Runner.rc

@@ -89,11 +89,11 @@ BEGIN
     BEGIN
         BLOCK "040904e4"
         BEGIN
-            VALUE "CompanyName", "com.limo" "\0"
+            VALUE "CompanyName", "saont.net" "\0"
             VALUE "FileDescription", "公云存储" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "公允存储" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2026 com.limo. All rights reserved." "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2026 saont.net. All rights reserved." "\0"
             VALUE "OriginalFilename", "cloudreve4_flutter.exe" "\0"
             VALUE "ProductName", "公云存储" "\0"
             VALUE "ProductVersion", VERSION_AS_STRING "\0"