实现可执行文件检测和运行功能：支持终端集成和右键菜单操作

主要更新：
- 后端添加可执行文件检测逻辑，支持脚本、二进制文件和权限检测
- 文件列表API返回executable字段标识可执行文件
- 右键菜单新增"打开终端"和"运行"功能
- 终端组件支持初始路径和自动执行命令
- 创建TerminalWindow组件提供完整窗口体验
- 运行功能通过终端执行，支持实时输出和交互

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/backend/ssh/terminal.ts

@@ -104,8 +104,18 @@ wss.on("connection", (ws: WebSocket) => {
       credentialId?: number;
       userId?: string;
     };
+    initialPath?: string;
+    executeCommand?: string;
   }) {
-    const { cols, rows, hostConfig } = data;
+    const { cols, rows, hostConfig, initialPath, executeCommand } = data;
+
+    sshLogger.debug("Terminal connection data received", {
+      operation: "terminal_connect_data",
+      hasInitialPath: !!initialPath,
+      initialPath,
+      hasExecuteCommand: !!executeCommand,
+      executeCommand
+    });
     const {
       id,
       ip,
@@ -302,6 +312,34 @@ wss.on("connection", (ws: WebSocket) => {
 
           setupPingInterval();
 
+          // Change to initial path if specified
+          if (initialPath && initialPath.trim() !== "") {
+            sshLogger.debug(`Changing to initial path: ${initialPath}`, {
+              operation: "ssh_initial_path",
+              hostId: id,
+              path: initialPath,
+            });
+
+            // Send cd command to change directory
+            const cdCommand = `cd "${initialPath.replace(/"/g, '\\"')}" && pwd\n`;
+            stream.write(cdCommand);
+          }
+
+          // Execute command if specified
+          if (executeCommand && executeCommand.trim() !== "") {
+            sshLogger.debug(`Executing command: ${executeCommand}`, {
+              operation: "ssh_execute_command",
+              hostId: id,
+              command: executeCommand,
+            });
+
+            // Wait a moment for the cd command to complete, then execute the command
+            setTimeout(() => {
+              const command = `${executeCommand}\n`;
+              stream.write(command);
+            }, 500);
+          }
+
           ws.send(
             JSON.stringify({ type: "connected", message: "SSH connected" }),
           );