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/pages/PromptHistoryPage.tsx

@@ -170,15 +170,15 @@ export function PromptHistoryPage() {
       setSelectedInsight(null);
       // Show success toast
       const successMessage = locale === 'zh' ? '洞察已删除' : 'Insight deleted';
-      if (window.showToast) {
-        window.showToast(successMessage, 'success');
+      if ((window as any).showToast) {
+        (window as any).showToast(successMessage, 'success');
       }
     } catch (err) {
       console.error('Failed to delete insight:', err);
       // Show error toast
       const errorMessage = locale === 'zh' ? '删除洞察失败' : 'Failed to delete insight';
-      if (window.showToast) {
-        window.showToast(errorMessage, 'error');
+      if ((window as any).showToast) {
+        (window as any).showToast(errorMessage, 'error');
       }
     }
   };