feat: add CLI Viewer Page with multi-pane layout and state management

- Implemented the CliViewerPage component for displaying CLI outputs in a configurable multi-pane layout.
- Integrated Zustand for state management, allowing for dynamic layout changes and tab management.
- Added layout options: single, split horizontal, split vertical, and 2x2 grid.
- Created viewerStore for managing layout, panes, and tabs, including actions for adding/removing panes and tabs.
- Added CoordinatorPage barrel export for easier imports.

ccw/frontend/src/locales/zh/lite-tasks.json

@@ -61,5 +61,11 @@
     "explorations": "探索",
     "context": "上下文",
     "diagnoses": "诊断"
+  },
+  "status": {
+    "completed": "已完成",
+    "inProgress": "进行中",
+    "blocked": "已阻止",
+    "pending": "待处理"
   }
 }