feat: Implement phases 6 to 9 of the review cycle fix process, including discovery, batching, parallel planning, execution, and completion

- Added Phase 6: Fix Discovery & Batching with intelligent grouping and batching of findings.
- Added Phase 7: Fix Parallel Planning to launch planning agents for concurrent analysis and aggregation of partial plans.
- Added Phase 8: Fix Execution for stage-based execution of fixes with conservative test verification.
- Added Phase 9: Fix Completion to aggregate results, generate summary reports, and handle session completion.
- Introduced new frontend components: ResizeHandle for draggable resizing of sidebar panels and useResizablePanel hook for managing panel sizes with localStorage persistence.
- Added PowerShell script for checking TypeScript errors in source code, excluding test files.

ccw/frontend/src/hooks/useSessions.ts

@@ -298,7 +298,7 @@ export function usePrefetchSessions() {
   return (filter?: SessionsFilter) => {
     queryClient.prefetchQuery({
       queryKey: sessionsKeys.list(filter),
-      queryFn: fetchSessions,
+      queryFn: () => fetchSessions(),
       staleTime: STALE_TIME,
     });
   };