fix(frontend): add missing i18n keys and improve workspace switch cache invalidation

- Add common.status.ready i18n key for zh/en locales
- Add ready/initialized/archived/failed status colors to dashboard widgets
- Expand QueryInvalidator to invalidate projectOverview, workflowStatusCounts,
  and dashboardStats queries on workspace switch

ccw/frontend/src/locales/en/common.json

@@ -82,7 +82,8 @@
     "label": "Status",
     "openIssues": "Open Issues",
     "enabled": "Enabled",
-    "disabled": "Disabled"
+    "disabled": "Disabled",
+    "ready": "Ready"
   },
   "priority": {
     "low": "Low",

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

@@ -82,7 +82,8 @@
     "label": "状态",
     "openIssues": "开放问题",
     "enabled": "已启用",
-    "disabled": "已禁用"
+    "disabled": "已禁用",
+    "ready": "就绪"
   },
   "priority": {
     "low": "低",