feat: 修复 SFTP 删除文件夹权限问题，添加兼容模式

packages/backend/src/services/sftp.service.ts

@@ -460,13 +460,15 @@ export class SftpService {
     async rmdir(sessionId: string, path: string, requestId: string): Promise<void> {
         const state = this.clientStates.get(sessionId);
         // 检查 SSH 客户端是否存在，而不是 SFTP 实例
-        if (!state || !state.sshClient) {
+        if (!state || !state.sshClient || !state.sftp) {
-            console.warn(`[SSH Exec] SSH 客户端未准备好，无法在 ${sessionId} 上执行 rmdir (ID: ${requestId})`);
+            console.warn(`[SSH Exec] SSH 客户端或 SFTP 未准备好，无法在 ${sessionId} 上执行 rmdir (ID: ${requestId})`);
-            state?.ws.send(JSON.stringify({ type: 'sftp:rmdir:error', path: path, payload: 'SSH 会话未就绪', requestId: requestId }));
+            state?.ws.send(JSON.stringify({ type: 'sftp:rmdir:error', path: path, payload: 'SSH 或 SFTP 会话未就绪', requestId: requestId }));
             return;
         }
         console.debug(`[SSH Exec ${sessionId}] Received rmdir (force) request for ${path} (ID: ${requestId})`);
 
+        // 首先尝试使用 rm -rf 命令
+        const tryRmRfCommand = async () => {
             // 构建 rm -rf 命令，确保路径被正确引用
             const command = `rm -rf "${path.replace(/"/g, '\\"')}"`; // Basic quoting for paths with spaces/quotes
             console.log(`[SSH Exec ${sessionId}] Executing command: ${command} (ID: ${requestId})`);
@@ -475,7 +477,7 @@ export class SftpService {
                 state.sshClient.exec(command, (err, stream) => {
                     if (err) {
                         console.error(`[SSH Exec ${sessionId}] Failed to start exec for rmdir ${path} (ID: ${requestId}):`, err);
-                    state.ws.send(JSON.stringify({ type: 'sftp:rmdir:error', path: path, payload: `执行删除命令失败: ${err.message}`, requestId: requestId }));
+                        trySftpRmdir(`执行删除命令失败: ${err.message}`);
                         return;
                     }
 
@@ -491,7 +493,7 @@ export class SftpService {
                         } else {
                             const errorMessage = stderrOutput.trim() || `命令退出，代码: ${code ?? 'N/A'}${signal ? `, 信号: ${signal}` : ''}`;
                             console.error(`[SSH Exec ${sessionId}] rmdir ${path} command failed (ID: ${requestId}). Code: ${code}, Signal: ${signal}, Stderr: ${stderrOutput}`);
-                        state.ws.send(JSON.stringify({ type: 'sftp:rmdir:error', path: path, payload: `删除目录失败: ${errorMessage}`, requestId: requestId }));
+                            trySftpRmdir(`删除目录失败: ${errorMessage}`);
                         }
                     });
 
@@ -502,8 +504,25 @@ export class SftpService {
                 });
             } catch (error: any) {
                 console.error(`[SSH Exec ${sessionId}] rmdir ${path} caught unexpected error during exec setup (ID: ${requestId}):`, error);
-            state.ws.send(JSON.stringify({ type: 'sftp:rmdir:error', path: path, payload: `执行删除时发生意外错误: ${error.message}`, requestId: requestId }));
+                trySftpRmdir(`执行删除时发生意外错误: ${error.message}`);
             }
+        };
+
+        // 备用方案：使用 SFTP 的 rmdir 方法
+        const trySftpRmdir = (errorMessage: string) => {
+            console.log(`[SFTP ${sessionId}] rm -rf 命令失败，尝试使用 SFTP rmdir 方法删除 ${path} (ID: ${requestId})`);
+            state.sftp!.rmdir(path, (err) => {
+                if (err) {
+                    console.error(`[SFTP ${sessionId}] SFTP rmdir ${path} 也失败 (ID: ${requestId}):`, err);
+                    state.ws.send(JSON.stringify({ type: 'sftp:rmdir:error', path: path, payload: `删除目录失败: ${errorMessage}; SFTP 尝试也失败: ${err.message}`, requestId: requestId }));
+                } else {
+                    console.log(`[SFTP ${sessionId}] SFTP rmdir ${path} 成功 (ID: ${requestId})`);
+                    state.ws.send(JSON.stringify({ type: 'sftp:rmdir:success', path: path, requestId: requestId }));
+                }
+            });
+        };
+
+        tryRmRfCommand();
     }
 
     /** 删除文件 */