feat(e2e): generate comprehensive E2E tests and fix TypeScript compilation errors

- Add 23 E2E test spec files covering 94 API endpoints across business domains
- Fix TypeScript compilation errors (file casing, duplicate export, implicit any)
- Update Playwright deprecated API calls (getByPlaceholderText -> getByPlaceholder)
- Tests cover: dashboard, sessions, tasks, workspace, loops, issues-queue, discovery,
  skills, commands, memory, project-overview, session-detail, cli-history,
  cli-config, cli-installations, lite-tasks, review, mcp, hooks, rules,
  index-management, prompt-memory, file-explorer

Test coverage: 100% domain coverage (23/23 domains)
API coverage: 94 endpoints across 23 business domains
Quality gates: 0 CRITICAL issues, all anti-patterns passed

Note: 700+ timeout tests require backend server (port 3456) to pass

ccw/frontend/src/components/shared/LogBlock/LogBlockList.tsx

@@ -29,7 +29,7 @@ export function LogBlockList({ executionId, className }: LogBlockListProps) {
   // This avoids duplicate logic and leverages store-side caching
   const blocks = useCliStreamStore(
     (state) => executionId ? state.getBlocks(executionId) : [],
-    (a, b) => a === b // Shallow comparison - arrays are cached in store
+    (a: LogBlockData[], b: LogBlockData[]) => a === b // Shallow comparison - arrays are cached in store
   );
 
   // Get execution status for empty state display