feat(remote): 支持浏览系统磁盘目录

- 添加 getDrives() 方法获取磁盘驱动器列表
- 修改 browseDirectory() 支持 allowSystem 参数浏览系统路径
- 添加 /api/files/drives 路由
- 修改前端 RemoteFilePanel 支持显示驱动器和系统目录浏览

remote/src/routes/files.js

@@ -17,14 +17,25 @@ router.get('/', (req, res) => {
   }
 });
 
+router.get('/drives', (req, res) => {
+  try {
+    const drives = fileService.getDrives();
+    res.json({ items: drives });
+  } catch (error) {
+    logger.error('Failed to get drives', { error: error.message });
+    res.status(500).json({ error: 'Failed to get drives' });
+  }
+});
+
 router.get('/browse', (req, res) => {
   try {
-    const path = req.query.path || '';
-    const result = fileService.browseDirectory(path);
+    const filePath = req.query.path || '';
+    const allowSystem = req.query.allowSystem === 'true';
+    const result = fileService.browseDirectory(filePath, allowSystem);
     res.json(result);
   } catch (error) {
-    logger.error('Failed to browse directory', { error: error.message });
-    res.status(500).json({ error: 'Failed to browse directory' });
+    logger.error('Failed to browse directory', { error: error.message, stack: error.stack });
+    res.status(500).json({ error: error.message || 'Failed to browse directory' });
   }
 });
 

remote/src/services/file/FileService.js

@@ -136,48 +136,78 @@ class FileService {
     }
   }
 
-  browseDirectory(relativePath = '') {
-    try {
+  getDrives() {
+    const drives = [];
+    const letters = 'CDEFGHIJKLMNOPQRSTUVWXYZ'.split('');
+    for (const letter of letters) {
+      const drivePath = `${letter}:\\`;
+      try {
+        fs.accessSync(drivePath);
+        drives.push({ name: `${letter}:`, isDirectory: true, size: 0 });
+      } catch {}
+    }
+    return drives;
+  }
+
+  browseDirectory(relativePath = '', allowSystem = false) {
+    let targetDir;
+    let currentPath;
+
+    if (allowSystem) {
+      currentPath = path.normalize(relativePath || '').replace(/^(\.\.(\/|\\|$))+/, '');
+      if (!currentPath) {
+        currentPath = '';
+      }
+      targetDir = currentPath || 'C:\\';
+    } else {
       const safePath = path.normalize(relativePath || '').replace(/^(\.\.(\/|\\|$))+/, '');
-      const targetDir = path.join(this.uploadDir, safePath);
-      
+      targetDir = path.join(this.uploadDir, safePath);
+      currentPath = safePath;
+
       if (!targetDir.startsWith(this.uploadDir)) {
         return { error: 'Access denied', items: [], currentPath: '' };
       }
-
-      if (!fs.existsSync(targetDir)) {
-        return { error: 'Directory not found', items: [], currentPath: safePath };
-      }
-
-      const items = fs.readdirSync(targetDir).map(name => {
-        const itemPath = path.join(targetDir, name);
-        const stat = fs.statSync(itemPath);
-        const isDirectory = stat.isDirectory();
-        
-        return {
-          name,
-          isDirectory,
-          size: isDirectory ? 0 : stat.size,
-          modified: stat.mtime,
-          type: isDirectory ? 'directory' : path.extname(name)
-        };
-      });
-
-      items.sort((a, b) => {
-        if (a.isDirectory && !b.isDirectory) return -1;
-        if (!a.isDirectory && b.isDirectory) return 1;
-        return a.name.localeCompare(b.name);
-      });
-
-      return {
-        items,
-        currentPath: safePath,
-        parentPath: safePath ? path.dirname(safePath) : null
-      };
-    } catch (error) {
-      logger.error('Failed to browse directory', { error: error.message });
-      return { error: error.message, items: [], currentPath: relativePath };
     }
+
+    const items = [];
+    
+    try {
+      const files = fs.readdirSync(targetDir);
+      
+      for (const name of files) {
+        try {
+          const itemPath = path.join(targetDir, name);
+          const stat = fs.statSync(itemPath);
+          const isDirectory = stat.isDirectory();
+          items.push({
+            name,
+            isDirectory,
+            size: isDirectory ? 0 : stat.size,
+            modified: stat.mtime,
+            type: isDirectory ? 'directory' : path.extname(name)
+          });
+        } catch (err) {
+          logger.debug('Skipped inaccessible file', { name, error: err.message });
+        }
+      }
+    } catch (err) {
+      logger.warn('Failed to read directory', { targetDir, error: err.message });
+      return { items: [], currentPath: currentPath, parentPath: path.dirname(currentPath) || null };
+    }
+
+    items.sort((a, b) => {
+      if (a.isDirectory && !b.isDirectory) return -1;
+      if (!a.isDirectory && b.isDirectory) return 1;
+      return a.name.localeCompare(b.name);
+    });
+
+    const parentPath = currentPath ? path.dirname(currentPath) : null;
+
+    return {
+      items,
+      currentPath: currentPath,
+      parentPath: parentPath === currentPath ? null : parentPath
+    };
   }
 }