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/tests/e2e/codexlens-manager.spec.ts

@@ -15,7 +15,7 @@ test.describe.skip('[CodexLens Manager] - CodexLens Management Tests', () => {
     const monitoring = setupEnhancedMonitoring(page);
 
     // Navigate to CodexLens page
-    await page.goto('/settings/codexlens', { waitUntil: 'networkidle' as const });
+    await page.goto('/react/settings/codexlens', { waitUntil: 'domcontentloaded' as const });
 
     // Check page title
     const title = page.getByText(/CodexLens/i).or(page.getByRole('heading', { name: /CodexLens/i }));