feat(remote): 新增文件传输专用端口配置

- 添加 fileTransferPort 字段到 RemoteDevice 类型
- 新增 frp 穿透配置: 3003 -> 8083
- 文件传输功能改用专用端口，避免与远程桌面端口共用
- 配置对话框新增文件传输端口设置

api/modules/remote/service.ts

@@ -73,6 +73,8 @@ export class RemoteService {
             serverHost: deviceConfig.serverHost || '',
             desktopPort: deviceConfig.desktopPort || 3000,
             gitPort: deviceConfig.gitPort || 3001,
+            openCodePort: deviceConfig.openCodePort || 3002,
+            fileTransferPort: deviceConfig.fileTransferPort || 3003,
             password: deviceConfig.password || '',
           }
         } catch {
@@ -82,6 +84,8 @@ export class RemoteService {
             serverHost: '',
             desktopPort: 3000,
             gitPort: 3001,
+            openCodePort: 3002,
+            fileTransferPort: 3003,
             password: '',
           }
         }
@@ -116,6 +120,8 @@ export class RemoteService {
         serverHost: device.serverHost,
         desktopPort: device.desktopPort,
         gitPort: device.gitPort,
+        openCodePort: device.openCodePort,
+        fileTransferPort: device.fileTransferPort,
         password: device.password || '',
       }
       await fs.writeFile(deviceConfigPath, JSON.stringify(deviceConfig, null, 2), 'utf-8')