Add end-to-end tests for Graph Explorer, History, Orchestrator, and Project features

- Implemented E2E tests for code relationship visualization in Graph Explorer.
- Added tests for archived session management in History, including search, filter, restore, and delete functionalities.
- Created tests for workflow orchestration in Orchestrator, covering node creation, connection, deletion, and workflow management.
- Developed tests for project statistics and timeline visualization in Project, including error handling and internationalization checks.

ccw/docs-site/.docusaurus/i18n.json

@@ -5,7 +5,7 @@
     "zh"
   ],
   "path": "i18n",
-  "currentLocale": "zh",
+  "currentLocale": "en",
   "localeConfigs": {
     "en": {
       "label": "English",