feat(iit): Complete CRA Agent V3.0 P0 milestone - autonomous QC pipeline

P0-1: Variable list sync from REDCap metadata
P0-2: QC rule configuration with JSON Logic + AI suggestion
P0-3: Scheduled QC + report generation + eQuery closed loop
P0-4: Unified dashboard + AI stream timeline + critical events

Backend:
- Add IitEquery, IitCriticalEvent Prisma models + migration
- Add cronEnabled/cronExpression to IitProject
- Implement eQuery service/controller/routes (CRUD + respond/review/close)
- Implement DailyQcOrchestrator (report -> eQuery -> critical events -> notify)
- Add AI rule suggestion service
- Register daily QC cron worker and eQuery auto-review worker
- Extend QC cockpit with timeline, trend, critical events APIs
- Fix timeline issues field compat (object vs array format)

Frontend:
- Create IIT business module with 6 pages (Dashboard, AI Stream, eQuery,
  Reports, Variable List + project config pages)
- Migrate IIT config from admin panel to business module
- Implement health score, risk heatmap, trend chart, critical event alerts
- Register IIT module in App router and top navigation

Testing:
- Add E2E API test script covering 7 modules (46 assertions, all passing)

Tested: E2E API tests 46/46 passed, backend and frontend verified
Made-with: Cursor

frontend-v2/src/App.tsx

@@ -24,10 +24,7 @@ import UserDetailPage from './modules/admin/pages/UserDetailPage'
 // 系统知识库管理
 import SystemKbListPage from './modules/admin/pages/SystemKbListPage'
 import SystemKbDetailPage from './modules/admin/pages/SystemKbDetailPage'
-// IIT 项目管理
-import IitProjectListPage from './modules/admin/pages/IitProjectListPage'
-import IitProjectDetailPage from './modules/admin/pages/IitProjectDetailPage'
-import IitQcCockpitPage from './modules/admin/pages/IitQcCockpitPage'
+// IIT 项目管理 - 已迁移到 modules/iit/ 业务模块
 // 运营日志
 import ActivityLogsPage from './pages/admin/ActivityLogsPage'
 // 个人中心页面
@@ -121,10 +118,7 @@ function App() {
                   {/* 系统知识库 */}
                   <Route path="system-kb" element={<SystemKbListPage />} />
                   <Route path="system-kb/:id" element={<SystemKbDetailPage />} />
-                  {/* IIT 项目管理 */}
-                  <Route path="iit-projects" element={<IitProjectListPage />} />
-                  <Route path="iit-projects/:id" element={<IitProjectDetailPage />} />
-                  <Route path="iit-projects/:id/cockpit" element={<IitQcCockpitPage />} />
+                  {/* IIT 项目管理 - 已迁移到 /iit/* 业务模块 */}
                   {/* 运营日志 */}
                   <Route path="activity-logs" element={<ActivityLogsPage />} />
                   {/* 系统配置 */}