feat: add Terminal Dashboard components and state management

- Implement TerminalTabBar for session tab management with status indicators and alert badges.
- Create TerminalWorkbench to combine TerminalTabBar and TerminalInstance for terminal session display.
- Add localization support for terminal dashboard in English and Chinese.
- Develop TerminalDashboardPage for the main layout of the terminal dashboard with a three-column structure.
- Introduce Zustand stores for session management and issue/queue integration, handling session groups, terminal metadata, and alert management.
- Create a monitor web worker for off-main-thread output analysis, detecting errors and stalls in terminal sessions.
- Define TypeScript types for terminal dashboard state management and integration.

ccw/frontend/src/locales/zh/navigation.json

@@ -35,7 +35,8 @@
     "rules": "规则",
     "explorer": "文件浏览器",
     "graph": "图浏览器",
-    "teams": "团队执行"
+    "teams": "团队执行",
+    "terminalDashboard": "终端仪表板"
   },
   "sidebar": {
     "collapse": "收起",