feat(workspace): 支持多行命令输入并新增仪表盘接口

将底部命令输入框改为支持自动增高的多行 textarea，
并把发送快捷键调整为 Ctrl+Shift+Enter，同时更新多语言提示文案

新增 dashboard summary 后端接口与聚合类型定义，
为首页管理驾驶舱改造提供统一数据入口，并同步知识库方案记录

packages/backend/src/index.ts

@@ -56,6 +56,7 @@ import sshSuspendRouter from './ssh-suspend/ssh-suspend.routes';
 import { transfersRoutes } from './transfers/transfers.routes';
 import pathHistoryRoutes from './path-history/path-history.routes';
 import favoritePathsRouter from './favorite-paths/favorite-paths.routes';
+import dashboardRoutes from './dashboard/dashboard.routes';
 import { initializeWebSocket } from './websocket';
 import { ipWhitelistMiddleware } from './auth/ipWhitelist.middleware';
 
@@ -263,6 +264,7 @@ const startServer = () => {
     app.use('/api/v1/transfers', transfersRoutes());
     app.use('/api/v1/path-history', pathHistoryRoutes);
     app.use('/api/v1/favorite-paths', favoritePathsRouter);
+    app.use('/api/v1/dashboard', dashboardRoutes);
     
     // 状态检查接口
     app.get('/api/v1/status', (req: Request, res: Response) => {