diff --git a/packages/backend/src/database/connection.ts b/packages/backend/src/database/connection.ts
index b084560..58f3667 100644
--- a/packages/backend/src/database/connection.ts
+++ b/packages/backend/src/database/connection.ts
@@ -107,7 +107,7 @@ export const getDbInstance = (): Promise<sqlite3.Database> => {
                     await runDatabaseInitializations(db);
                     // +++ 运行数据库迁移 +++
                     await runMigrations(db);
-                    console.log('[数据库] 初始化和迁移完成。'); // 添加日志确认
+                    console.log('[数据库] 初始化和迁移完成。'); 
                     resolve(db);
                 } catch (initError) {
                     console.error('[数据库] 连接后初始化失败，正在关闭连接...');
diff --git a/packages/backend/src/index.ts b/packages/backend/src/index.ts
index b5e6817..4a211eb 100644
--- a/packages/backend/src/index.ts
+++ b/packages/backend/src/index.ts
@@ -53,7 +53,7 @@ import appearanceRoutes from './appearance/appearance.routes';
 import sshKeysRouter from './ssh_keys/ssh_keys.routes'; 
 import quickCommandTagRoutes from './quick-command-tags/quick-command-tag.routes'; 
 import sshSuspendRouter from './ssh-suspend/ssh-suspend.routes';
-import { transfersRoutes } from './transfers/transfers.routes'; // 新增：导入传输路由
+import { transfersRoutes } from './transfers/transfers.routes';
 import { initializeWebSocket } from './websocket';
 import { ipWhitelistMiddleware } from './auth/ipWhitelist.middleware';
 
@@ -69,29 +69,19 @@ import './services/notification.dispatcher.service';
 process.on('unhandledRejection', (reason: any, promise: Promise<any>) => {
     console.error('---未处理的 Promise Rejection---');
     console.error('原因:', reason);
-    // 可以在这里添加更详细的日志记录，例如将错误发送到监控系统
-    // 注意：根据 Node.js 官方建议，未来版本的 Node.js 可能会默认在 unhandledRejection 时终止进程。
-    // 目前我们选择记录错误并继续运行，但这可能导致应用程序状态不一致。
   });
   
   // 捕获未捕获的同步异常
   process.on('uncaughtException', (error: Error) => {
     console.error('---未捕获的异常---');
     console.error('错误:', error);
-    // 记录错误，但避免退出进程，尝试让服务器继续运行（有风险）
-    // 在生产环境中，更安全的做法可能是记录错误后优雅地关闭服务器并重启。
-    // process.exit(1); // 强制退出（更安全，但会中断服务）
   });
-  // --- 结束全局错误处理 ---
+
   
 
 const initializeEnvironment = async () => {
-    // Env files (root and data/.env) are now loaded at the very top of the file.
-    // This function will now focus on generating keys if they are missing
-    // and setting defaults for GUACD variables.
 
-    // Use the globally defined path for data .env
-    const dataEnvPath = dataEnvPathGlobal; // Use the path defined at the top
+    const dataEnvPath = dataEnvPathGlobal; 
     let keysGenerated = false;
     let keysToAppend = '';
 
@@ -117,16 +107,10 @@ const initializeEnvironment = async () => {
     if (!process.env.GUACD_HOST) {
         console.warn('[ENV Init] GUACD_HOST 未设置，将使用默认值 "localhost"');
         process.env.GUACD_HOST = 'localhost';
-        // Optionally add to keysToAppend if you want to save the default
-        // keysToAppend += `\nGUACD_HOST=localhost`;
-        // keysGenerated = true; // Mark if you want to save
     }
     if (!process.env.GUACD_PORT) {
         console.warn('[ENV Init] GUACD_PORT 未设置，将使用默认值 "4822"');
         process.env.GUACD_PORT = '4822';
-        // Optionally add to keysToAppend
-        // keysToAppend += `\nGUACD_PORT=4822`;
-        // keysGenerated = true; // Mark if you want to save
     }
 
 
@@ -271,10 +255,10 @@ const startServer = () => {
     app.use('/api/v1/quick-commands', quickCommandsRoutes);
     app.use('/api/v1/terminal-themes', terminalThemeRoutes);
     app.use('/api/v1/appearance', appearanceRoutes);
-    app.use('/api/v1/ssh-keys', sshKeysRouter); // +++ Register SSH Key routes +++
-    app.use('/api/v1/quick-command-tags', quickCommandTagRoutes); // +++ Register Quick Command Tag routes +++
-    app.use('/api/v1/ssh-suspend', sshSuspendRouter); // +++ Register SSH Suspend routes +++
-    app.use('/api/v1/transfers', transfersRoutes()); // 新增：注册传输路由
+    app.use('/api/v1/ssh-keys', sshKeysRouter); 
+    app.use('/api/v1/quick-command-tags', quickCommandTagRoutes);
+    app.use('/api/v1/ssh-suspend', sshSuspendRouter); 
+    app.use('/api/v1/transfers', transfersRoutes()); 
     
     // 状态检查接口
     app.get('/api/v1/status', (req: Request, res: Response) => {
diff --git a/packages/backend/src/repositories/appearance.repository.ts b/packages/backend/src/repositories/appearance.repository.ts
index a3e81b4..1204c55 100644
--- a/packages/backend/src/repositories/appearance.repository.ts
+++ b/packages/backend/src/repositories/appearance.repository.ts
@@ -120,7 +120,7 @@ export const ensureDefaultSettingsExist = async (db: sqlite3.Database): Promise<
         { key: 'terminalBackgroundImage', value: defaults.terminalBackgroundImage ?? '' }, // 数据库中使用空字符串
         { key: 'pageBackgroundImage', value: defaults.pageBackgroundImage ?? '' }, // 数据库中使用空字符串
         { key: 'terminalBackgroundEnabled', value: defaults.terminalBackgroundEnabled },
-        { key: 'terminalBackgroundOverlayOpacity', value: defaults.terminalBackgroundOverlayOpacity }, // 新增
+        { key: 'terminalBackgroundOverlayOpacity', value: defaults.terminalBackgroundOverlayOpacity }, 
     ];
  
     try {
diff --git a/packages/backend/src/repositories/connection.repository.ts b/packages/backend/src/repositories/connection.repository.ts
index 0055fb8..f2847f7 100644
--- a/packages/backend/src/repositories/connection.repository.ts
+++ b/packages/backend/src/repositories/connection.repository.ts
@@ -7,7 +7,7 @@ import { getDbInstance, runDb, getDb as getDbRow, allDb } from '../database/conn
 interface ConnectionBase {
     id: number;
     name: string | null;
-    type: 'SSH' | 'RDP' | 'VNC'; // Add type field
+    type: 'SSH' | 'RDP' | 'VNC';
     host: string;
     port: number;
     username: string;
@@ -16,8 +16,8 @@ interface ConnectionBase {
     created_at: number;
     updated_at: number;
     last_connected_at: number | null;
-    ssh_key_id?: number | null; // +++ Add ssh_key_id here as well +++
-notes?: string | null; // 新增备注字段
+    ssh_key_id?: number | null;
+notes?: string | null; 
 }
 
 // ConnectionWithTagsRow implicitly includes 'type' and 'ssh_key_id' via ConnectionBase
@@ -36,7 +36,7 @@ export interface FullConnectionData extends ConnectionBase {
     encrypted_password?: string | null;
     encrypted_private_key?: string | null;
     encrypted_passphrase?: string | null;
-notes?: string | null; // 新增备注字段
+notes?: string | null; 
     tag_ids?: number[];
 }
 
diff --git a/packages/backend/src/transfers/transfers.controller.ts b/packages/backend/src/transfers/transfers.controller.ts
index 3a7008a..6e6663e 100644
--- a/packages/backend/src/transfers/transfers.controller.ts
+++ b/packages/backend/src/transfers/transfers.controller.ts
@@ -44,7 +44,6 @@ export class TransfersController {
       res.status(202).json(task); // 202 Accepted 表示请求已接受处理，但尚未完成
     } catch (error) {
       console.error('[TransfersController] Error initiating transfer:', error);
-      // next(error) 可以将错误传递给全局错误处理中间件
       res.status(500).json({ message: 'Failed to initiate transfer.', error: error instanceof Error ? error.message : String(error) });
     }
   }
diff --git a/packages/backend/src/transfers/transfers.service.ts b/packages/backend/src/transfers/transfers.service.ts
index a377d63..c471f01 100644
--- a/packages/backend/src/transfers/transfers.service.ts
+++ b/packages/backend/src/transfers/transfers.service.ts
@@ -1,19 +1,17 @@
-import * as fs from 'fs/promises';
-import * as os from 'os';
 import * as path from 'path';
 import * as crypto from 'crypto';
-import { v4 as uuidv4 } from 'uuid'; // 用于生成唯一ID
+import { v4 as uuidv4 } from 'uuid'; 
 import { Client, ConnectConfig, SFTPWrapper } from 'ssh2';
 import { InitiateTransferPayload, TransferTask, TransferSubTask } from './transfers.types';
 import { getConnectionWithDecryptedCredentials } from '../services/connection.service';
 import type { ConnectionWithTags, DecryptedConnectionCredentials } from '../types/connection.types';
-// import { logger } from '../utils/logger'; // 假设的日志工具路径
+
 
 export class TransfersService {
   private transferTasks: Map<string, TransferTask> = new Map();
   private taskAbortControllers: Map<string, AbortController> = new Map(); // +++ 用于存储任务的 AbortController +++
   private readonly TEMP_KEY_PREFIX = 'nexus_target_key_';
-  private readonly MAX_CONCURRENT_SUB_TASKS = 5; // Maximum concurrent sub-tasks
+  private readonly MAX_CONCURRENT_SUB_TASKS = 5; 
 
   constructor() {
     console.info('[TransfersService] Initialized.');
@@ -23,8 +21,8 @@ export class TransfersService {
     const taskId = uuidv4();
     const now = new Date();
     const subTasks: TransferSubTask[] = [];
-    const abortController = new AbortController(); // +++ 创建 AbortController +++
-    this.taskAbortControllers.set(taskId, abortController); // +++ 存储 AbortController +++
+    const abortController = new AbortController(); 
+    this.taskAbortControllers.set(taskId, abortController); 
 
     // 每个 (目标服务器, 源文件) 组合都是一个子任务
     for (const connectionId of payload.connectionIds) { // 目标服务器ID列表
@@ -91,10 +89,6 @@ export class TransfersService {
         }
       });
       
-      // 确保在 AbortController Map 中移除，以防内存泄漏（如果任务不再处理）
-      // 也可以在任务彻底结束后移除
-      // this.taskAbortControllers.delete(taskId); // 暂时不在这里删除，可能在 processTransferTask 的 finally 中
-
       return true;
     }
     console.warn(`[TransfersService] No AbortController found for task ${taskId} to cancel.`);
@@ -299,7 +293,6 @@ export class TransfersService {
               });
             subTaskExecutionPromises.push(taskPromise);
           }
-          // If all tasks were launched and some are still active, or if all tasks were skipped due to early cancellation
           if (currentSubTaskIndex === totalSubTasks && currentlyActiveSubTasks === 0 && !signal.aborted) {
              console.info(`[TransfersService] Task ${taskId}: All sub-tasks processed (no active, no more to launch).`);
              signal.removeEventListener('abort', onAbortOverall);
@@ -343,7 +336,7 @@ export class TransfersService {
         }
       }
       this.finalizeOverallTaskStatus(taskId); // Ensure final status is set
-      this.taskAbortControllers.delete(taskId); // +++ Clean up AbortController +++
+      this.taskAbortControllers.delete(taskId); 
       if (task) { // task 可能未定义如果 taskId 错误
         console.info(`[TransfersService] Task ${taskId} processing finished. Final status: ${task.status}.`);
       } else {
@@ -355,10 +348,8 @@ export class TransfersService {
   private async checkCommandOnSource(client: Client, command: string): Promise<string | null> {
     return new Promise((resolve) => {
       const checkCmd = `command -v ${this.escapeShellArg(command)} 2>/dev/null`;
-      console.error(`[Roo Debug][transfers.service.ts] checkCommandOnSource: Executing: ${checkCmd}`);
       client.exec(checkCmd, (err, stream) => {
         if (err) {
-          console.warn(`[Roo Debug][transfers.service.ts] Error checking for command '${command}' on source:`, err);
           return resolve(null);
         }
         let stdout = '';
@@ -367,15 +358,12 @@ export class TransfersService {
           .on('close', (code: number) => {
             const foundPath = stdout.trim();
             if (code === 0 && foundPath) {
-              console.error(`[Roo Debug][transfers.service.ts] checkCommandOnSource: Command '${command}' found at '${foundPath}'.`);
               resolve(foundPath);
             } else {
-              console.warn(`[Roo Debug][transfers.service.ts] checkCommandOnSource: Command '${command}' not found (exit code: ${code}).`);
               resolve(null);
             }
           })
-          .stderr.on('data', (data: Buffer) => { // Should be empty due to 2>/dev/null, but good to have
-            console.warn(`[Roo Debug][transfers.service.ts] checkCommandOnSource: STDERR for '${command}': ${data.toString()}`);
+          .stderr.on('data', (data: Buffer) => { 
           });
       });
     });
@@ -386,7 +374,6 @@ export class TransfersService {
     const connectConfig = this.buildSshConnectConfig(targetConnection, targetCredentials);
     let foundCommandPath: string | null = null;
 
-    console.error(`[Roo Debug][transfers.service.ts] checkCommandOnTargetServer: Attempting to connect to target ${targetConnection.host} to check for command '${command}'.`);
 
     try {
       await new Promise<void>((resolve, reject) => {
@@ -407,10 +394,8 @@ export class TransfersService {
 
       foundCommandPath = await new Promise((resolve) => {
         const checkCmd = `command -v ${this.escapeShellArg(command)} 2>/dev/null`;
-        console.error(`[Roo Debug][transfers.service.ts] checkCommandOnTargetServer: Executing on target: ${checkCmd}`);
         targetClient.exec(checkCmd, (err, stream) => {
           if (err) {
-            console.warn(`[Roo Debug][transfers.service.ts] Error checking for command '${command}' on target ${targetConnection.host}:`, err);
             return resolve(null);
           }
           let stdout = '';
@@ -419,20 +404,16 @@ export class TransfersService {
             .on('close', (code: number) => {
               const pathOutput = stdout.trim();
               if (code === 0 && pathOutput) {
-                console.error(`[Roo Debug][transfers.service.ts] checkCommandOnTargetServer: Command '${command}' found at '${pathOutput}' on target ${targetConnection.host}.`);
                 resolve(pathOutput);
               } else {
-                console.warn(`[Roo Debug][transfers.service.ts] checkCommandOnTargetServer: Command '${command}' not found on target ${targetConnection.host} (exit code: ${code}).`);
                 resolve(null);
               }
             })
             .stderr.on('data', (data: Buffer) => {
-              console.warn(`[Roo Debug][transfers.service.ts] checkCommandOnTargetServer: STDERR for '${command}' on target ${targetConnection.host}: ${data.toString()}`);
             });
         });
       });
     } catch (error) {
-      console.error(`[Roo Debug][transfers.service.ts] checkCommandOnTargetServer: Failed to check command '${command}' on target ${targetConnection.host}:`, error);
       foundCommandPath = null; // Ensure it's null on error
     } finally {
       targetClient.end();
@@ -441,7 +422,6 @@ export class TransfersService {
   }
  
   private async uploadKeyToSourceViaSftp(client: Client, privateKeyContent: string, remotePath: string): Promise<void> {
-    console.error(`[Roo Debug][transfers.service.ts] ENTERING uploadKeyToSourceViaSftp for remotePath: ${remotePath}`);
     const SFTP_UPLOAD_TIMEOUT_MS = 30000; // 30 seconds timeout for SFTP key upload
 
     return new Promise((resolve, reject) => {
@@ -450,8 +430,6 @@ export class TransfersService {
 
       const cleanupAndReject = (errMsg: string, errObj?: any) => {
         if (timeoutHandle) clearTimeout(timeoutHandle);
-        if (errObj) console.error(`[Roo Debug][transfers.service.ts] uploadKeyToSourceViaSftp error: ${errMsg}`, errObj);
-        else console.error(`[Roo Debug][transfers.service.ts] uploadKeyToSourceViaSftp error: ${errMsg}`);
         sftpSession?.end();
         reject(new Error(errMsg));
       };
@@ -460,7 +438,6 @@ export class TransfersService {
         cleanupAndReject(`SFTP upload to ${remotePath} timed out after ${SFTP_UPLOAD_TIMEOUT_MS / 1000}s.`);
       }, SFTP_UPLOAD_TIMEOUT_MS);
 
-      console.error(`[Roo Debug][transfers.service.ts] uploadKeyToSourceViaSftp: Calling client.sftp(). Timeout set for ${SFTP_UPLOAD_TIMEOUT_MS}ms.`);
       client.sftp((err, sftp) => {
         sftpSession = sftp; // Store session for potential cleanup
         if (err) {
@@ -469,7 +446,6 @@ export class TransfersService {
         if (!sftp) {
           return cleanupAndReject(`SFTP session error: SFTP object is null.`);
         }
-        console.error(`[Roo Debug][transfers.service.ts] uploadKeyToSourceViaSftp: client.sftp() CALLBACK success. SFTP session obtained. Creating write stream to ${remotePath}`);
         const stream = sftp.createWriteStream(remotePath, { mode: 0o600 });
         
         stream.on('error', (writeErr: Error) => {
@@ -479,19 +455,13 @@ export class TransfersService {
         // Listen to 'close' instead of 'finish' for more reliability
         stream.on('close', () => {
           if (timeoutHandle) clearTimeout(timeoutHandle);
-          console.error(`[Roo Debug][transfers.service.ts] uploadKeyToSourceViaSftp: WriteStream ON CLOSE for ${remotePath}. Key upload likely successful.`);
           console.info(`[TransfersService] Private key for target successfully uploaded to source at ${remotePath}`);
           sftp.end();
           resolve();
         });
  
-        console.error(`[Roo Debug][transfers.service.ts] uploadKeyToSourceViaSftp: Previewing privateKeyContent before stream.end(). Length: ${privateKeyContent.length}`);
-        console.error(`[Roo Debug][transfers.service.ts] uploadKeyToSourceViaSftp: Key content START: <<<${privateKeyContent.substring(0, 70)}>>>`);
-        console.error(`[Roo Debug][transfers.service.ts] uploadKeyToSourceViaSftp: Key content END: <<<${privateKeyContent.substring(Math.max(0, privateKeyContent.length - 70))}>>>`);
-        console.error(`[Roo Debug][transfers.service.ts] uploadKeyToSourceViaSftp: Calling stream.end() to write key content.`);
         let keyContentToWrite = privateKeyContent;
         if (!keyContentToWrite.endsWith('\n')) {
-          console.error(`[Roo Debug][transfers.service.ts] uploadKeyToSourceViaSftp: privateKeyContent does not end with a newline. Appending one.`);
           keyContentToWrite += '\n';
         }
         stream.end(keyContentToWrite);
@@ -544,8 +514,7 @@ export class TransfersService {
       commandParts.push(options.sshPassCommand);
     }
  
-    // Use the full path here (should be safe, no special chars from command -v)
-    // Arguments will still be quoted later.
+
     commandParts.push(executableCommand);
  
     if (commandType === 'rsync') {
@@ -568,12 +537,6 @@ export class TransfersService {
       commandParts.push(remoteFullDest);
  
     } else { // scp
-      // For scp, SSH options are typically passed directly if scp is a wrapper around ssh, or via scp's own options that map to ssh options.
-      // Common scp implementations accept -P for port and -i for identity file directly.
-      // StrictHostKeyChecking and UserKnownHostsFile are ssh options.
-      // We build the ssh part for scp separately if needed, or rely on scp passing -o options.
-      // Let's assume scp will pass these -o options to its underlying ssh call.
-      // If not, a more complex construction of scp's ssh command via -S might be needed.
       commandParts.push('-o StrictHostKeyChecking=no'); // For scp, pass as direct option
       commandParts.push('-o UserKnownHostsFile=/dev/null'); // For scp, pass as direct option
       if (isDir) commandParts.push('-r');
@@ -601,14 +564,12 @@ private async executeRemoteTransferOnSource(
   transferMethodPreference: 'auto' | 'rsync' | 'scp',
   signal: AbortSignal // +++ Add AbortSignal parameter +++
 ): Promise<void> {
-  console.error(`[Roo Debug][transfers.service.ts] ENTERING executeRemoteTransferOnSource for sub-task ${subTaskId}, item: ${sourceItem.name}`);
   if (signal.aborted) throw new DOMException('Transfer cancelled by user.', 'AbortError');
   this.updateSubTaskStatus(taskId, subTaskId, 'transferring', 0, `Initializing remote transfer for ${sourceItem.name}`);
   let tempTargetKeyPathOnSource: string | undefined;
 
     try {
       if (signal.aborted) throw new DOMException('Transfer cancelled by user.', 'AbortError');
-      console.error(`[Roo Debug][transfers.service.ts] Sub-task ${subTaskId}: Starting try block in executeRemoteTransferOnSource.`);
       // Pass signal to these check commands if they are made to support it. For now, they are quick.
       const sshpassPath = await this.checkCommandOnSource(sourceSshClient, 'sshpass' /*, signal */);
       if (signal.aborted) throw new DOMException('Transfer cancelled by user.', 'AbortError');
@@ -617,7 +578,6 @@ private async executeRemoteTransferOnSource(
       const scpPathOnSource = await this.checkCommandOnSource(sourceSshClient, 'scp' /*, signal */);
       if (signal.aborted) throw new DOMException('Transfer cancelled by user.', 'AbortError');
 
-      console.error(`[Roo Debug][transfers.service.ts] Sub-task ${subTaskId}: Source checks -> sshpass: ${sshpassPath}, rsync: ${rsyncPathOnSource}, scp: ${scpPathOnSource}`);
 
       let executableCommandPath: string | null = null;
       let commandTypeForLogic: 'rsync' | 'scp' | undefined = undefined; // Initialize as undefined
@@ -626,7 +586,6 @@ private async executeRemoteTransferOnSource(
       if (transferMethodPreference === 'auto') {
         if (rsyncPathOnSource) {
           // Source has rsync, check target
-          console.error(`[Roo Debug][transfers.service.ts] Sub-task ${subTaskId}: 'auto' mode, rsync found on source. Checking target...`);
           rsyncPathOnTarget = await this.checkCommandOnTargetServer(targetConnection, targetCredentials, 'rsync' /*, signal */);
           if (signal.aborted) throw new DOMException('Transfer cancelled by user.', 'AbortError');
           if (rsyncPathOnTarget) {
@@ -677,7 +636,6 @@ private async executeRemoteTransferOnSource(
 
       // +++ 自动创建目标目录 +++
       this.updateSubTaskStatus(taskId, subTaskId, 'transferring', 6, `Ensuring target directory ${this.escapeShellArg(remoteTargetPathOnTarget)} exists on ${targetConnection.host}.`);
-      console.error(`[Roo Debug][transfers.service.ts] Sub-task ${subTaskId}: Ensuring target directory exists: ${remoteTargetPathOnTarget} on ${targetConnection.host}`);
       const targetClientForMkdir = new Client();
       const targetConnectConfigForMkdir = this.buildSshConnectConfig(targetConnection, targetCredentials);
       try {
@@ -685,8 +643,8 @@ private async executeRemoteTransferOnSource(
         await new Promise<void>((resolveMkdir, rejectMkdir) => {
           let mkdirStreamClosed = false;
           const onAbortMkdir = () => {
-            if (!mkdirStreamClosed) { // Only if stream/connection is still active
-                targetClientForMkdir.end(); // Attempt to close the connection
+            if (!mkdirStreamClosed) { 
+                targetClientForMkdir.end();
             }
             rejectMkdir(new DOMException('Mkdir operation cancelled by user.', 'AbortError'));
           };
@@ -699,7 +657,6 @@ private async executeRemoteTransferOnSource(
               return rejectMkdir(new DOMException('Mkdir operation cancelled by user (on ready).', 'AbortError'));
             }
             const mkdirCommand = `mkdir -p ${this.escapeShellArg(remoteTargetPathOnTarget)}`;
-            console.error(`[Roo Debug][transfers.service.ts] Sub-task ${subTaskId}: Executing on target for mkdir: ${mkdirCommand}`);
             targetClientForMkdir.exec(mkdirCommand, (err, stream) => {
               if (err) {
                 signal.removeEventListener('abort', onAbortMkdir);
@@ -718,11 +675,9 @@ private async executeRemoteTransferOnSource(
                   rejectMkdir(new Error(`Failed to create directory ${remoteTargetPathOnTarget} on ${targetConnection.host}. Exit code: ${code}. Stderr: ${mkdirStderr.trim()}`));
                 }
               }).on('data', (data: Buffer) => {
-                // stdout from mkdir -p is usually empty
               }).stderr.on('data', (data: Buffer) => {
                 mkdirStderr += data.toString();
-                console.warn(`[Roo Debug][transfers.service.ts] Sub-task ${subTaskId}: STDERR (mkdir on target): ${data.toString()}`);
-              }).on('error', (streamErr: Error) => { // Handle stream errors specifically
+              }).on('error', (streamErr: Error) => { 
                 mkdirStreamClosed = true;
                 signal.removeEventListener('abort', onAbortMkdir);
                 targetClientForMkdir.end();
@@ -731,11 +686,9 @@ private async executeRemoteTransferOnSource(
             });
           }).on('error', (connErr: Error) => {
             signal.removeEventListener('abort', onAbortMkdir);
-            // targetClientForMkdir.end(); // .end() might not be needed if 'close' always follows 'error'
             rejectMkdir(connErr);
-          }).on('close', () => { // This 'close' is for the client connection itself
-            signal.removeEventListener('abort', onAbortMkdir); // Ensure cleanup if closed for other reasons
-            // console.info(`[TransfersService] SSH connection for mkdir to target ${targetConnection.host} closed.`);
+          }).on('close', () => { 
+            signal.removeEventListener('abort', onAbortMkdir); 
           }).connect(targetConnectConfigForMkdir);
         });
 
@@ -743,17 +696,14 @@ private async executeRemoteTransferOnSource(
         this.updateSubTaskStatus(taskId, subTaskId, 'transferring', 8, `Target directory ensured. Preparing transfer command.`);
 
       } catch (mkdirError: any) {
-        // Ensure client is closed on error if it's still somehow connected
-        // (though on 'error' or exec stream 'close'/'error', it should be handled)
         if (targetClientForMkdir && (targetClientForMkdir as any)._sock && !(targetClientForMkdir as any)._sock.destroyed) {
              try { targetClientForMkdir.end(); } catch (e) { /* ignore */ }
         }
         console.error(`[TransfersService] Sub-task ${subTaskId}: Failed to ensure target directory ${remoteTargetPathOnTarget} on ${targetConnection.host}:`, mkdirError.message);
         if (mkdirError.name === 'AbortError') {
              this.updateSubTaskStatus(taskId, subTaskId, 'cancelled', undefined, `Directory creation cancelled: ${mkdirError.message}`);
-             throw mkdirError; // Re-throw AbortError to be handled by the main try-catch
+             throw mkdirError; 
         }
-        // For other errors, update status to failed and throw a new error to be caught by main try-catch
         this.updateSubTaskStatus(taskId, subTaskId, 'failed', undefined, `Failed to create target directory: ${mkdirError.message}`);
         throw new Error(`Failed to create target directory ${remoteTargetPathOnTarget}: ${mkdirError.message}`); // This will be caught by the outer try-catch
       }
@@ -792,10 +742,6 @@ private async executeRemoteTransferOnSource(
         const onAbortCmd = () => {
           if (!streamClosed) {
             console.warn(`[TransfersService] Abort signal received for command stream of sub-task ${subTaskId}. Attempting to close stream.`);
-            // execStream?.close(); // 'execStream' is not defined here, should be 'stream' from exec callback
-            // It's tricky to access the stream here to close it directly.
-            // The main mechanism will be the timeout and the client connection eventually closing if task is aborted.
-            // Or, if ssh2's stream object can be made available to this scope, call .close() or .destroy().
           }
           rejectCmd(new DOMException('Command cancelled by user.', 'AbortError'));
         };
@@ -840,7 +786,6 @@ private async executeRemoteTransferOnSource(
           stream.stderr.on('data', (data: Buffer) => {
             if (signal.aborted) return;
             stderrCombined += data.toString();
-            console.warn(`[Roo Debug][transfers.service.ts] STDERR Sub-task ${subTaskId}: ${data.toString()}`);
           });
           stream.on('close', (code: number | null) => {
             streamClosed = true;
@@ -882,7 +827,6 @@ private async executeRemoteTransferOnSource(
       }
       throw error; // Re-throw to be caught by processSingleSubTaskWrapper
     } finally {
-      console.info(`[Roo Debug][transfers.service.ts] executeRemoteTransferOnSource FINALLY for sub-task ${subTaskId}`);
       if (tempTargetKeyPathOnSource) {
         try {
           // TODO: Make deleteFileOnSourceViaSftp accept signal
@@ -1001,7 +945,6 @@ private async executeRemoteTransferOnSource(
 
     if (numSubTasks === 0) {
       task.overallProgress = 0;
-      // task.status remains as set by initiate or direct updateOverallTaskStatus if no subtasks.
       return;
     }
 
@@ -1013,12 +956,9 @@ private async executeRemoteTransferOnSource(
           break;
         case 'failed':
           failedCount++;
-          // Failed tasks are "done" but contribute 0 to success progress.
-          // Depending on definition, they could count as 100 for task "completion" progress.
-          // Here, only successful completion adds to progress towards 100%.
           break;
         case 'transferring':
-        case 'connecting': // consider connecting as in-progress for overall status
+        case 'connecting': 
           inProgressCount++;
           totalProgress += (st.progress !== undefined ? st.progress : (st.status === 'connecting' ? 5 : 0)); // Small progress for connecting
           break;
@@ -1043,8 +983,6 @@ private async executeRemoteTransferOnSource(
     } else if (queuedCount === numSubTasks) {
       newOverallStatus = 'queued'; // All subtasks are still queued
     } else {
-      // Fallback or unexpected mixed state, treat as in-progress generally
-      // This case implies some completed, some queued, no failed, no in-progress items.
       newOverallStatus = 'in-progress'; // Or 'partially-completed' if completedCount > 0
       if (completedCount > 0 && queuedCount > 0 && failedCount === 0 && inProgressCount === 0) {
         newOverallStatus = 'partially-completed'; // More accurate for this specific mix
@@ -1056,7 +994,6 @@ private async executeRemoteTransferOnSource(
         task.status = newOverallStatus;
     }
     task.updatedAt = new Date();
-    // console.debug(`[TransfersService] Task ${taskId} overall progress: ${task.overallProgress}%, status: ${task.status}`);
   }
 
   private finalizeOverallTaskStatus(taskId: string): void {
diff --git a/packages/backend/src/types/connection.types.ts b/packages/backend/src/types/connection.types.ts
index 8737e5c..443b9fa 100644
--- a/packages/backend/src/types/connection.types.ts
+++ b/packages/backend/src/types/connection.types.ts
@@ -10,7 +10,7 @@ export interface ConnectionBase {
     created_at: number;
     updated_at: number;
     last_connected_at: number | null;
-notes?: string | null; // 新增备注字段
+notes?: string | null; 
 }
 
 export interface ConnectionWithTags extends ConnectionBase {
@@ -31,7 +31,7 @@ export interface CreateConnectionInput {
     ssh_key_id?: number | null; // +++ Add ssh_key_id +++
     proxy_id?: number | null;
     tag_ids?: number[];
-notes?: string | null; // 新增备注字段
+notes?: string | null; 
 }
 
 
@@ -47,7 +47,7 @@ export interface UpdateConnectionInput {
     passphrase?: string;
     ssh_key_id?: number | null; // +++ Add ssh_key_id +++
     proxy_id?: number | null;
-notes?: string | null; // 新增备注字段
+notes?: string | null; 
     tag_ids?: number[];
 }
 
@@ -63,10 +63,10 @@ export interface FullConnectionData {
     encrypted_password: string | null;
     encrypted_private_key: string | null;
     encrypted_passphrase: string | null;
-    ssh_key_id?: number | null; // +++ Add ssh_key_id +++
+    ssh_key_id?: number | null; 
     proxy_id: number | null;
     created_at: number;
-notes: string | null; // 新增备注字段 (数据库原始字段)
+notes: string | null; 
     updated_at: number;
     last_connected_at: number | null;
 }
diff --git a/packages/frontend/src/components/AddProxyForm.vue b/packages/frontend/src/components/AddProxyForm.vue
index 1e590c1..321943f 100644
--- a/packages/frontend/src/components/AddProxyForm.vue
+++ b/packages/frontend/src/components/AddProxyForm.vue
@@ -28,7 +28,7 @@ const initialFormData = {
   port: 1080, // 默认 SOCKS5 端口
   username: '',
   password: '',
-  tag_ids: [] as number[], // 新增 tag_ids 字段
+  tag_ids: [] as number[], 
 };
 const formData = reactive({ ...initialFormData });
 
diff --git a/packages/frontend/src/components/FileManagerContextMenu.vue b/packages/frontend/src/components/FileManagerContextMenu.vue
index 45e7ea7..1c01670 100644
--- a/packages/frontend/src/components/FileManagerContextMenu.vue
+++ b/packages/frontend/src/components/FileManagerContextMenu.vue
@@ -1,11 +1,11 @@
 <script setup lang="ts">
-import { ref, watch, nextTick, type PropType, onUnmounted, computed } from 'vue'; // Added watch, nextTick, computed
+import { ref, watch, nextTick, type PropType, onUnmounted, computed } from 'vue';
 import { useI18n } from 'vue-i18n';
 import SendFilesModal from './SendFilesModal.vue';
 import type { ContextMenuItem } from '../composables/file-manager/useFileManagerContextMenu';
-import type { FileListItem } from '../types/sftp.types'; // Import FileListItem
+import type { FileListItem } from '../types/sftp.types';
 import { useDeviceDetection } from '../composables/useDeviceDetection';
-import { useSessionStore } from '../stores/session.store'; // +++ 导入 session store +++
+import { useSessionStore } from '../stores/session.store';
 
 const props = defineProps({
   isVisible: {
diff --git a/packages/frontend/src/components/RemoteDesktopModal.vue b/packages/frontend/src/components/RemoteDesktopModal.vue
index 353622c..9440d89 100644
--- a/packages/frontend/src/components/RemoteDesktopModal.vue
+++ b/packages/frontend/src/components/RemoteDesktopModal.vue
@@ -28,8 +28,8 @@ const connectionStatus = ref<'disconnected' | 'connecting' | 'connected' | 'erro
 const isResizing = ref(false);
 const resizeStartX = ref(0);
 const resizeStartY = ref(0);
-const initialModalWidthForResize = ref(0); // Renamed to avoid conflict if other 'initialModalWidth' exists
-const initialModalHeightForResize = ref(0); // Renamed
+const initialModalWidthForResize = ref(0); 
+const initialModalHeightForResize = ref(0); 
 const statusMessage = ref('');
 const keyboard = ref<any | null>(null);
 const mouse = ref<any | null>(null);
@@ -42,7 +42,7 @@ const isDraggingRestoreButton = ref(false);
 const restoreButtonPosition = ref({ x: 16, y: window.innerHeight / 2 - 25 }); // 16px from left, vertically centered
 let dragOffsetX = 0;
 let dragOffsetY = 0;
-let hasDragged = false; // 新增 hasDragged 标志
+let hasDragged = false; 
 
 const MIN_MODAL_WIDTH = 1024;
 const MIN_MODAL_HEIGHT = 768;
@@ -431,7 +431,7 @@ watch(desiredModalWidth, (newWidth, oldWidth) => {
       console.log(`[RDP 模态框] 宽度监听触发，但值 (${newWidth}) 未改变。跳过保存。`);
       return;
   }
-  console.log(`[RDP 模态框] 监听 desiredModalWidth 触发: ${oldWidth} -> ${newWidth}`); // 添加日志
+  console.log(`[RDP 模态框] 监听 desiredModalWidth 触发: ${oldWidth} -> ${newWidth}`);
   // 保存前验证新宽度
   const validatedWidth = Math.max(MIN_MODAL_WIDTH, Number(newWidth) || MIN_MODAL_WIDTH);
   // 防抖保存 *验证后* 的宽度
diff --git a/packages/frontend/src/components/SendFilesModal.vue b/packages/frontend/src/components/SendFilesModal.vue
index 3cc6318..b0992a7 100644
--- a/packages/frontend/src/components/SendFilesModal.vue
+++ b/packages/frontend/src/components/SendFilesModal.vue
@@ -210,11 +210,6 @@ const getGroupId = (group: GroupedConnection): string => {
 
 const toggleTagGroupExpansion = (group: GroupedConnection) => {
   const groupId = getGroupId(group);
-  // If state is undefined, default to true (expanded), then toggle it.
-  // So, if undefined, it becomes !(true) = false. If defined, it's just toggled.
-  // To make it default to expanded and then collapse on first click:
-  // expandedTagGroups.value[groupId] = !(expandedTagGroups.value[groupId] ?? true);
-  // To make it default to collapsed and then expand on first click (if true means expanded):
     expandedTagGroups.value[groupId] = !(expandedTagGroups.value[groupId] ?? true);
   };
   
@@ -276,8 +271,6 @@ const groupedConnections = computed<GroupedConnection[]>(() => {
             groups[tag.id].connections.push(conn);
           }
         } else {
-          // Connection has a tag ID that doesn't exist in tagsStore, treat as untagged for this modal
-           // Or handle as an error, or create a "missing tag" group
           if (!untaggedConnections.some(c => c.id === conn.id)) {
             untaggedConnections.push(conn);
           }
@@ -359,11 +352,6 @@ const toggleTagGroupSelection = (group: GroupedConnection) => {
 
 watch(() => props.visible, (newValue) => {
   if (newValue) {
-    // Reset state when modal becomes visible, except perhaps targetPath if desired
-    // searchTerm.value = '';
-    // selectedConnectionIds.value = [];
-    // transferMethod.value = 'auto';
-    // If stores might be empty, fetch again or ensure they are fresh
     if (connectionsStore.connections.length === 0) {
       connectionsStore.fetchConnections().catch(error => console.error(t('sendFilesModal.errorFetchingConnections'), error));
     }
@@ -428,7 +416,6 @@ const toggleIndividualConnectionSelection = (connectionId: number) => {
 };
 
 const getConnectionIconClass = (connectionType?: string): string => {
-  // Ensure connectionType is treated as optional and provide a default if undefined
   const type = connectionType?.toLowerCase();
   switch (type) {
     case 'rdp': return 'fas fa-desktop';
@@ -438,9 +425,8 @@ const getConnectionIconClass = (connectionType?: string): string => {
     case 'local': return 'fas fa-laptop';
     case 'serial': return 'fas fa-microchip';
     case 'docker': return 'fab fa-docker';
-    default: return 'fas fa-server'; // Default icon for unknown or undefined types
+    default: return 'fas fa-server';
   }
 };
 
-// Fallback i18n messages are now removed as they are expected to be in the locale JSON files.
 </script>
diff --git a/packages/frontend/src/components/StyleCustomizer.vue b/packages/frontend/src/components/StyleCustomizer.vue
index 771eed3..65663c8 100644
--- a/packages/frontend/src/components/StyleCustomizer.vue
+++ b/packages/frontend/src/components/StyleCustomizer.vue
@@ -98,8 +98,8 @@ const initializeEditableState = () => {
   editableEditorFontSize.value = currentEditorFontSize.value; // <-- 新增
   localTerminalBackgroundEnabled.value = isTerminalBackgroundEnabled.value; // <-- 重新添加：在此处初始化
   editableTerminalBackgroundOverlayOpacity.value = currentTerminalBackgroundOverlayOpacity.value; // 初始化蒙版透明度
-  console.log(`[StyleCustomizer initializeEditableState] Initializing localTerminalBackgroundEnabled to: ${localTerminalBackgroundEnabled.value} (from store: ${isTerminalBackgroundEnabled.value})`); // 添加日志
-  console.log(`[StyleCustomizer initializeEditableState] Initializing editableTerminalBackgroundOverlayOpacity to: ${editableTerminalBackgroundOverlayOpacity.value} (from store: ${currentTerminalBackgroundOverlayOpacity.value})`); // 新增日志
+  console.log(`[StyleCustomizer initializeEditableState] Initializing localTerminalBackgroundEnabled to: ${localTerminalBackgroundEnabled.value} (from store: ${isTerminalBackgroundEnabled.value})`); 
+  console.log(`[StyleCustomizer initializeEditableState] Initializing editableTerminalBackgroundOverlayOpacity to: ${editableTerminalBackgroundOverlayOpacity.value} (from store: ${currentTerminalBackgroundOverlayOpacity.value})`);
   uploadError.value = null;
   importError.value = null;
   saveThemeError.value = null;
@@ -143,7 +143,7 @@ watch([
                             newSettings?.terminalBackgroundEnabled !== oldSettings?.terminalBackgroundEnabled ||
                             newSettings?.terminalBackgroundOverlayOpacity !== oldSettings?.terminalBackgroundOverlayOpacity; // 检查相关设置是否变化
     if (!isEditingTheme.value || newActiveThemeId !== oldActiveThemeId || settingsChanged) {
-        console.log(`[StyleCustomizer Watch] Triggering re-initialization. isEditing: ${isEditingTheme.value}, themeIdChanged: ${newActiveThemeId !== oldActiveThemeId}, settingsChanged: ${settingsChanged}`); // 添加日志
+        console.log(`[StyleCustomizer Watch] Triggering re-initialization. isEditing: ${isEditingTheme.value}, themeIdChanged: ${newActiveThemeId !== oldActiveThemeId}, settingsChanged: ${settingsChanged}`);
         initializeEditableState(); // 调用修改后的初始化函数
     } else {
         // 如果正在编辑，只更新非编辑相关的部分 (不包括 UI 主题和终端背景开关，因为它们由 initializeEditableState 处理)
@@ -165,10 +165,10 @@ watch(isTerminalBackgroundEnabled, (newValue) => {
   // 只有当本地状态与 store 状态不一致时才更新本地状态
   // 这避免了 handleToggleTerminalBackground 触发的不必要更新
   if (localTerminalBackgroundEnabled.value !== newValue) {
-    console.log(`[StyleCustomizer Watch isTerminalBackgroundEnabled] Store changed to ${newValue}, updating local state.`); // 添加日志
+    console.log(`[StyleCustomizer Watch isTerminalBackgroundEnabled] Store changed to ${newValue}, updating local state.`); 
     localTerminalBackgroundEnabled.value = newValue;
   } else {
-     console.log(`[StyleCustomizer Watch isTerminalBackgroundEnabled] Store changed to ${newValue}, but local state already matches. No update needed.`); // 添加日志
+     console.log(`[StyleCustomizer Watch isTerminalBackgroundEnabled] Store changed to ${newValue}, but local state already matches. No update needed.`);
   }
 });
 // 移除单独监听 isTerminalBackgroundEnabled 的 watcher
diff --git a/packages/frontend/src/components/TerminalTabBar.vue b/packages/frontend/src/components/TerminalTabBar.vue
index 2dfb4a8..dbc9a65 100644
--- a/packages/frontend/src/components/TerminalTabBar.vue
+++ b/packages/frontend/src/components/TerminalTabBar.vue
@@ -6,7 +6,7 @@ import { useRoute } from 'vue-router';
 import { storeToRefs } from 'pinia';
 import WorkspaceConnectionListComponent from './WorkspaceConnectionList.vue';
 import TabBarContextMenu from './TabBarContextMenu.vue';
-import TransferProgressModal from './TransferProgressModal.vue'; // 导入传输进度模态框
+import TransferProgressModal from './TransferProgressModal.vue';
 import { useSessionStore } from '../stores/session.store';
 import { useConnectionsStore, type ConnectionInfo } from '../stores/connections.store';
 import { useLayoutStore, type PaneName } from '../stores/layout.store';
@@ -15,7 +15,7 @@ import { useWorkspaceEventEmitter, useWorkspaceEventSubscriber, useWorkspaceEven
 import type { SessionTabInfoWithStatus } from '../stores/session/types'; // 路径修正
 
 
-const { t } = useI18n(); // 初始化 i18n
+const { t } = useI18n();
 const emitWorkspaceEvent = useWorkspaceEventEmitter(); // +++ 获取事件发射器 +++
 const onWorkspaceEvent = useWorkspaceEventSubscriber(); // +++ 获取事件订阅器 +++
 const offWorkspaceEvent = useWorkspaceEventOff(); // +++ 获取事件取消订阅器 +++
diff --git a/packages/frontend/src/components/TransferProgressModal.vue b/packages/frontend/src/components/TransferProgressModal.vue
index 44c056c..30af084 100644
--- a/packages/frontend/src/components/TransferProgressModal.vue
+++ b/packages/frontend/src/components/TransferProgressModal.vue
@@ -65,8 +65,8 @@ interface TransferTask {
   updatedAt: string | Date;
   subTasks: TransferSubTask[];
   overallProgress?: number;
-  sourceConnectionId?: number; // 新增：源连接ID (可选)
-  remoteTargetPath?: string;   // 新增：目标路径 (可选)
+  sourceConnectionId?: number; 
+  remoteTargetPath?: string; 
 }
 
 const transferTasks = ref<TransferTask[]>([]);
@@ -133,8 +133,8 @@ const getDisplayStatus = (status: string): string => {
     'partially-completed': 'transferProgressModal.status.partiallyCompleted',
     'connecting': 'transferProgressModal.status.connecting',
     'transferring': 'transferProgressModal.status.transferring',
-    'cancelling': 'transferProgressModal.status.cancelling', // +++ 新增状态翻译键 +++
-    'cancelled': 'transferProgressModal.status.cancelled',   // +++ 新增状态翻译键 +++
+    'cancelling': 'transferProgressModal.status.cancelling',
+    'cancelled': 'transferProgressModal.status.cancelled', 
   };
   // 提供一个默认的回退文本，以防i18n key缺失
   const defaultText = status.charAt(0).toUpperCase() + status.slice(1).replace('-', ' ');
@@ -150,7 +150,7 @@ const formatDate = (dateInput: string | Date): string => {
       hour: '2-digit', minute: '2-digit', second: '2-digit'
     });
   } catch (e) {
-    return String(dateInput); // Fallback if date is invalid
+    return String(dateInput); 
   }
 };
 
@@ -185,7 +185,7 @@ watch(() => props.visible, (newVisible) => {
   }
 }, { immediate: false }); // immediate: false 避免在组件初始化时立即执行，onMounted已处理首次加载
 
-// --- 原有：模态框可见性控制 ---
+// --- 模态框可见性控制 ---
 const internalVisible = ref(props.visible);
 
 // 监听 props.visible 的变化来更新 internalVisible
@@ -221,17 +221,10 @@ const handleCancelTask = async (taskId: string) => {
     // 更新UI，将任务状态临时设置为 'cancelling' 或禁用按钮
     const task = transferTasks.value.find(t => t.taskId === taskId);
     if (task) {
-      // 优选: 如果后端会快速更新状态并通过轮询反映, 前端可能不需要立即改变状态。
-      // 否则, 可以临时改变: task.status = 'cancelling';
-      // 另一种方法是添加一个 loading 状态到按钮上
+
     }
 
     await apiClient.post(`/transfers/cancel/${taskId}`);
-    // 可以添加成功提示
-    // uiNotificationsStore.showSuccess(t('transferProgressModal.cancelRequested', '已发送终止请求。'));
-
-    // 前端优化：立即将任务状态设置为 'cancelling' 以提供即时反馈
-    // 这样用户点击后能马上看到状态变为“终止中”，后续轮询会从后端获取权威状态。
     const taskBeingCancelled = transferTasks.value.find(t => t.taskId === taskId);
     if (taskBeingCancelled && ['queued', 'in-progress', 'connecting', 'transferring'].includes(taskBeingCancelled.status)) {
       taskBeingCancelled.status = 'cancelling';
@@ -241,8 +234,6 @@ const handleCancelTask = async (taskId: string) => {
     fetchTransferTasks();
   } catch (error: any) {
     console.error(`Failed to cancel task ${taskId}:`, error);
-    // uiNotificationsStore.showError(error.response?.data?.message || error.message || t('transferProgressModal.error.cancelFailed', '终止任务失败。'));
-    // 如果任务状态之前被临时修改，可能需要回滚
   }
 };
 
diff --git a/packages/frontend/src/components/WorkspaceConnectionList.vue b/packages/frontend/src/components/WorkspaceConnectionList.vue
index fb221e2..cca7ef0 100644
--- a/packages/frontend/src/components/WorkspaceConnectionList.vue
+++ b/packages/frontend/src/components/WorkspaceConnectionList.vue
@@ -383,7 +383,7 @@ const handleMenuAction = (action: 'add' | 'edit' | 'delete' | 'clone') => { // 
   closeContextMenu(); // 先关闭菜单
 
   if (action === 'add') {
-    console.log('[WorkspaceConnectionList] handleMenuAction called with action: add. Emitting request-add-connection...'); // 添加日志
+    console.log('[WorkspaceConnectionList] handleMenuAction called with action: add. Emitting request-add-connection...'); 
     // router.push('/connections/add'); // 改为触发事件
     emitWorkspaceEvent('connection:requestAdd');
   } else if (conn) {
@@ -516,7 +516,7 @@ const handleTagMenuAction = (action: 'connectAll' | 'manageTag' | 'deleteAllConn
     // 确保是已标记的组
     if (group.tagId === null) {
         uiNotificationsStore.addNotification({
-            message: t('workspaceConnectionList.cannotDeleteFromUntagged'), // 新增i18n
+            message: t('workspaceConnectionList.cannotDeleteFromUntagged'), 
             type: 'warning',
         });
         return;
@@ -524,13 +524,13 @@ const handleTagMenuAction = (action: 'connectAll' | 'manageTag' | 'deleteAllConn
     // 确保组内有连接
     if (group.connections.length === 0) {
       uiNotificationsStore.addNotification({
-        message: t('workspaceConnectionList.noConnectionsToDeleteInGroup', { groupName: group.groupName }), // 新增i18n
+        message: t('workspaceConnectionList.noConnectionsToDeleteInGroup', { groupName: group.groupName }), 
         type: 'info',
       });
       return;
     }
 
-    if (confirm(t('workspaceConnectionList.confirmDeleteAllConnectionsInGroup', { count: group.connections.length, groupName: group.groupName }))) { // 新增i18n
+    if (confirm(t('workspaceConnectionList.confirmDeleteAllConnectionsInGroup', { count: group.connections.length, groupName: group.groupName }))) { 
       const connectionIdsToDelete = group.connections.map(conn => conn.id);
       
       const deletePromises = connectionIdsToDelete.map(connId =>
@@ -547,13 +547,13 @@ const handleTagMenuAction = (action: 'connectAll' | 'manageTag' | 'deleteAllConn
 
           if (successfulDeletes > 0) {
             uiNotificationsStore.addNotification({
-              message: t('workspaceConnectionList.allConnectionsInGroupDeletedSuccess', { count: successfulDeletes, groupName: group.groupName }), // 新增i18n
+              message: t('workspaceConnectionList.allConnectionsInGroupDeletedSuccess', { count: successfulDeletes, groupName: group.groupName }), 
               type: 'success',
             });
           }
           if (failedDeletes > 0) {
              uiNotificationsStore.addNotification({
-              message: t('workspaceConnectionList.someConnectionsInGroupDeleteFailed', { count: failedDeletes, groupName: group.groupName }), // 新增i18n
+              message: t('workspaceConnectionList.someConnectionsInGroupDeleteFailed', { count: failedDeletes, groupName: group.groupName }), 
               type: 'error',
             });
           }
diff --git a/packages/frontend/src/composables/file-manager/useFileManagerDragAndDrop.ts b/packages/frontend/src/composables/file-manager/useFileManagerDragAndDrop.ts
index 37d61bc..b8ab4da 100644
--- a/packages/frontend/src/composables/file-manager/useFileManagerDragAndDrop.ts
+++ b/packages/frontend/src/composables/file-manager/useFileManagerDragAndDrop.ts
@@ -365,8 +365,7 @@ export function useFileManagerDragAndDrop(options: UseFileManagerDragAndDropOpti
 
   // --- 返回状态和处理函数 ---
   return {
-    // isDraggingOver, // 不再导出
-    showExternalDropOverlay, // 新增导出
+    showExternalDropOverlay, 
     dragOverTarget,
     draggedItem, // 需要暴露以供 handleDragOverRow 等函数内部判断
     // --- 事件处理器 ---
@@ -374,7 +373,7 @@ export function useFileManagerDragAndDrop(options: UseFileManagerDragAndDropOpti
     handleDragOver,
     handleDragLeave,
     handleDrop, // 容器的 drop (主要用于清理)
-    handleOverlayDrop, // 新增导出：蒙版的 drop
+    handleOverlayDrop, 
     handleDragStart,
     handleDragEnd,
     handleDragOverRow,
diff --git a/packages/frontend/src/composables/useAddConnectionForm.ts b/packages/frontend/src/composables/useAddConnectionForm.ts
index fc06467..e117720 100644
--- a/packages/frontend/src/composables/useAddConnectionForm.ts
+++ b/packages/frontend/src/composables/useAddConnectionForm.ts
@@ -38,20 +38,20 @@ export function useAddConnectionForm(props: AddConnectionFormProps, emit: AddCon
 
   // 表单数据模型
   const initialFormData = {
-    type: 'SSH' as 'SSH' | 'RDP' | 'VNC', // Use uppercase to match ConnectionInfo
+    type: 'SSH' as 'SSH' | 'RDP' | 'VNC', 
     name: '',
     host: '',
     port: 22,
     username: '',
-    auth_method: 'password' as 'password' | 'key', // SSH specific
+    auth_method: 'password' as 'password' | 'key', 
     password: '',
-    private_key: '', // SSH specific (for direct input) - This field seems unused in the new logic, but kept for initialData consistency
-    passphrase: '', // SSH specific (for direct input) - This field seems unused, kept for consistency
-    selected_ssh_key_id: null as number | null, // +++ Add field for selected key ID +++
+    private_key: '', 
+    passphrase: '', 
+    selected_ssh_key_id: null as number | null,
     proxy_id: null as number | null,
-    tag_ids: [] as number[], // 新增 tag_ids 字段
-    notes: '', // 新增备注字段
-    vncPassword: '', // VNC specific password
+    tag_ids: [] as number[], 
+    notes: '', 
+    vncPassword: '', 
   };
   const formData = reactive({ ...initialFormData });
 
diff --git a/packages/frontend/src/composables/useSshTerminal.ts b/packages/frontend/src/composables/useSshTerminal.ts
index 15e3ff0..9a0f0f8 100644
--- a/packages/frontend/src/composables/useSshTerminal.ts
+++ b/packages/frontend/src/composables/useSshTerminal.ts
@@ -86,7 +86,6 @@ export function createSshTerminalManager(sessionId: string, wsDeps: SshTerminalD
     };
 
     const handleTerminalResize = (dimensions: { cols: number; rows: number }) => {
-        // 添加日志，确认从 WorkspaceView 收到的尺寸
         console.log(`[SSH ${sessionId}] handleTerminalResize called with:`, dimensions);
         // 只有在连接状态下才发送 resize 命令给后端
         if (isConnected.value) {
diff --git a/packages/frontend/src/stores/appearance.store.ts b/packages/frontend/src/stores/appearance.store.ts
index 9470d26..a717551 100644
--- a/packages/frontend/src/stores/appearance.store.ts
+++ b/packages/frontend/src/stores/appearance.store.ts
@@ -235,9 +235,9 @@ export const useAppearanceStore = defineStore('appearance', () => {
      * @param enabled 是否启用
      */
     async function setTerminalBackgroundEnabled(enabled: boolean) {
-        console.log(`[AppearanceStore LOG] setTerminalBackgroundEnabled 调用，准备发送给后端的值: ${enabled}`); // 添加日志
+        console.log(`[AppearanceStore LOG] setTerminalBackgroundEnabled 调用，准备发送给后端的值: ${enabled}`);
         await updateAppearanceSettings({ terminalBackgroundEnabled: enabled });
-        console.log(`[AppearanceStore LOG] setTerminalBackgroundEnabled 更新后端调用完成。`); // 添加日志
+        console.log(`[AppearanceStore LOG] setTerminalBackgroundEnabled 更新后端调用完成。`); 
     }
  
     /**
diff --git a/packages/frontend/src/stores/auth.store.ts b/packages/frontend/src/stores/auth.store.ts
index 42078b9..ef0e956 100644
--- a/packages/frontend/src/stores/auth.store.ts
+++ b/packages/frontend/src/stores/auth.store.ts
@@ -55,17 +55,17 @@ interface AuthState {
     user: UserInfo | null;
     isLoading: boolean;
     error: string | null;
-    loginRequires2FA: boolean; // 新增状态：标记登录是否需要 2FA
+    loginRequires2FA: boolean; 
     // 存储 IP 黑名单数据 (虽然 actions 在这里，但 state 结构保持)
     ipBlacklist: {
         entries: any[]; // TODO: Define a proper type for blacklist entries
         total: number;
     };
     needsSetup: boolean; // 是否需要初始设置
-    publicCaptchaConfig: PublicCaptchaConfig | null; //  Public CAPTCHA config
-    passkeys: PasskeyInfo[] | null; //  Store for user's passkeys
-    passkeysLoading: boolean; //  Loading state for passkeys
-    hasPasskeysAvailable: boolean; //  Indicates if passkeys are available for login
+    publicCaptchaConfig: PublicCaptchaConfig | null;
+    passkeys: PasskeyInfo[] | null; 
+    passkeysLoading: boolean; 
+    hasPasskeysAvailable: boolean; 
 }
 
 export const useAuthStore = defineStore('auth', {
diff --git a/packages/frontend/src/stores/connections.store.ts b/packages/frontend/src/stores/connections.store.ts
index 7296639..ac22593 100644
--- a/packages/frontend/src/stores/connections.store.ts
+++ b/packages/frontend/src/stores/connections.store.ts
@@ -16,7 +16,7 @@ export interface ConnectionInfo {
     created_at: number;
     updated_at: number;
     last_connected_at: number | null;
-notes?: string | null; // 新增备注字段
+notes?: string | null; 
     vncPassword?: string; // VNC specific password
 }
 
diff --git a/packages/frontend/src/stores/layout.store.ts b/packages/frontend/src/stores/layout.store.ts
index 1be2a1a..04ea470 100644
--- a/packages/frontend/src/stores/layout.store.ts
+++ b/packages/frontend/src/stores/layout.store.ts
@@ -411,7 +411,7 @@ function ensureNodeIds(node: LayoutNode | null): LayoutNode | null {
   }
 
 
-  // 新增 Action: 更新特定容器节点的子节点大小
+  // 更新特定容器节点的子节点大小
   function updateNodeSizes(nodeId: string, childrenSizes: { index: number; size: number }[]) {
     console.log(`[Layout Store] 请求更新节点 ${nodeId} 的子节点大小:`, childrenSizes);
     const originalJson = JSON.stringify(layoutTree.value); // Store original state
@@ -426,14 +426,14 @@ function ensureNodeIds(node: LayoutNode | null): LayoutNode | null {
        console.log(`[Layout Store] 未找到节点 ${nodeId} 或大小未改变。`);
     }
   }
-  // 新增 Action: 切换布局（Header/Footer）的可见性
+  // 切换布局（Header/Footer）的可见性
   function toggleLayoutVisibility() {
     isLayoutVisible.value = !isLayoutVisible.value;
     console.log(`[Layout Store] 布局可见性切换为: ${isLayoutVisible.value}`);
     // 注意：这个状态目前不与后端同步
   }
 
-  // 新增 Action: 从后端加载主导航栏可见性设置
+  // 从后端加载主导航栏可见性设置
   async function loadHeaderVisibility() {
     console.log('[Layout Store] Attempting to load header visibility from backend...');
     try {
@@ -453,7 +453,7 @@ function ensureNodeIds(node: LayoutNode | null): LayoutNode | null {
     }
   }
 
-  // 新增 Action: 切换主导航栏可见性并同步到后端
+  // 切换主导航栏可见性并同步到后端
   async function toggleHeaderVisibility() {
     const newValue = !isHeaderVisible.value;
     console.log(`[Layout Store] Toggling header visibility to: ${newValue}`);
@@ -471,19 +471,19 @@ function ensureNodeIds(node: LayoutNode | null): LayoutNode | null {
     }
   }
 
- // 新增 Action: 获取系统内置的默认布局
+ // 获取系统内置的默认布局
  function getSystemDefaultLayout(): LayoutNode {
    console.log('[Layout Store] Getting system default layout.');
    return getDefaultLayout(); // 直接调用内部函数
  }
 
- // 新增 Action: 获取系统内置的默认侧栏配置
+ // 获取系统内置的默认侧栏配置
  function getSystemDefaultSidebarPanes(): { left: PaneName[], right: PaneName[] } {
      console.log('[Layout Store] Getting system default sidebar panes.');
      return getDefaultSidebarPanes();
  }
 
- // 新增 Action: 将当前主布局树持久化到后端和 localStorage
+ // 将当前主布局树持久化到后端和 localStorage
  async function persistLayoutTree() { // Make async
    // ... (existing try/catch logic for backend and localStorage) ...
    // Ensure apiClient calls are awaited if they return promises
@@ -504,7 +504,7 @@ function ensureNodeIds(node: LayoutNode | null): LayoutNode | null {
    }
  }
 
- // 新增 Action: 将当前侧栏配置持久化到后端和 localStorage
+ // 将当前侧栏配置持久化到后端和 localStorage
  async function persistSidebarPanes() { // Make async
     // ... (existing try/catch logic for backend and localStorage) ...
     try {
diff --git a/packages/frontend/src/views/WorkspaceView.vue b/packages/frontend/src/views/WorkspaceView.vue
index b235ec0..31cf551 100644
--- a/packages/frontend/src/views/WorkspaceView.vue
+++ b/packages/frontend/src/views/WorkspaceView.vue
@@ -214,7 +214,7 @@ const unsubscribeFromWorkspaceEvents = useWorkspaceEventOff();
 
  // --- 本地方法 (仅处理 UI 状态) ---
  const handleRequestAddConnection = () => {
-   console.log('[WorkspaceView] handleRequestAddConnection 被调用！'); // 添加日志确认事件到达
+   console.log('[WorkspaceView] handleRequestAddConnection 被调用！');
    connectionToEdit.value = null;
    showAddEditForm.value = true;
  };