Feature: Add PR review comments and resolution, improve AI prompt handling (#790)

* feat: Add PR review comments and resolution endpoints, improve prompt handling

* Feature: File Editor (#789)

* feat: Add file management feature

* feat: Add auto-save functionality to file editor

* fix: Replace HardDriveDownload icon with Save icon for consistency

* fix: Prevent recursive copy/move and improve shell injection prevention

* refactor: Extract editor settings form into separate component

* ```
fix: Improve error handling and stabilize async operations

- Add error event handlers to GraphQL process spawns to prevent unhandled rejections
- Replace execAsync with execFile for safer command execution and better control
- Fix timeout cleanup in withTimeout generator to prevent memory leaks
- Improve outdated comment detection logic by removing redundant condition
- Use resolveModelString for consistent model string handling
- Replace || with ?? for proper falsy value handling in dialog initialization
- Add comments clarifying branch name resolution logic for local branches with slashes
- Add catch handler for project selection to handle async errors gracefully
```

* refactor: Extract PR review comments logic to dedicated service

* fix: Improve robustness and UX for PR review and file operations

* fix: Consolidate exec utilities and improve type safety

* refactor: Replace ScrollArea with div and improve file tree layout

apps/ui/src/hooks/mutations/index.ts

@@ -62,6 +62,7 @@ export {
   useValidateIssue,
   useMarkValidationViewed,
   useGetValidationStatus,
+  useResolveReviewThread,
 } from './use-github-mutations';
 
 // Ideation mutations

apps/ui/src/hooks/mutations/use-github-mutations.ts

@@ -135,6 +135,55 @@ export function useMarkValidationViewed(projectPath: string) {
   });
 }
 
+/**
+ * Resolve or unresolve a PR review thread
+ *
+ * @param projectPath - Path to the project
+ * @param prNumber - PR number (for cache invalidation)
+ * @returns Mutation for resolving/unresolving a review thread
+ *
+ * @example
+ * ```tsx
+ * const resolveThread = useResolveReviewThread(projectPath, prNumber);
+ * resolveThread.mutate({ threadId: comment.threadId, resolve: true });
+ * ```
+ */
+export function useResolveReviewThread(projectPath: string, prNumber: number) {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: async ({ threadId, resolve }: { threadId: string; resolve: boolean }) => {
+      const api = getElectronAPI();
+      if (!api.github?.resolveReviewThread) {
+        throw new Error('Resolve review thread API not available');
+      }
+
+      const result = await api.github.resolveReviewThread(projectPath, threadId, resolve);
+
+      if (!result.success) {
+        throw new Error(result.error || 'Failed to resolve review thread');
+      }
+
+      return { isResolved: result.isResolved ?? resolve };
+    },
+    onSuccess: (_, variables) => {
+      const action = variables.resolve ? 'resolved' : 'unresolved';
+      toast.success(`Comment ${action}`, {
+        description: `The review thread has been ${action} on GitHub`,
+      });
+      // Invalidate the PR review comments cache to reflect updated resolved status
+      queryClient.invalidateQueries({
+        queryKey: queryKeys.github.prReviewComments(projectPath, prNumber),
+      });
+    },
+    onError: (error) => {
+      toast.error('Failed to update comment', {
+        description: error instanceof Error ? error.message : 'Unknown error',
+      });
+    },
+  });
+}
+
 /**
  * Get running validation status
  *

apps/ui/src/hooks/queries/index.ts

@@ -20,6 +20,7 @@ export {
   useGitHubValidations,
   useGitHubRemote,
   useGitHubIssueComments,
+  useGitHubPRReviewComments,
 } from './use-github';
 
 // Usage

apps/ui/src/hooks/queries/use-features.ts

@@ -6,8 +6,8 @@
  * automatic caching, deduplication, and background refetching.
  */
 
-import { useMemo } from 'react';
-import { useQuery } from '@tanstack/react-query';
+import { useMemo, useEffect, useRef } from 'react';
+import { useQuery, useQueryClient } from '@tanstack/react-query';
 import { getElectronAPI } from '@/lib/electron';
 import { queryKeys } from '@/lib/query-keys';
 import { STALE_TIMES } from '@/lib/query-client';
@@ -151,6 +151,34 @@ export function useFeatures(projectPath: string | undefined) {
     [projectPath]
   );
 
+  const queryClient = useQueryClient();
+
+  // Subscribe to React Query cache changes for features and sync to localStorage.
+  // This ensures optimistic updates (e.g., status changes to 'verified') are
+  // persisted to localStorage immediately, not just when queryFn runs.
+  // Without this, a page refresh after an optimistic update could show stale
+  // localStorage data where features appear in the wrong column (e.g., verified
+  // features showing up in backlog).
+  const projectPathRef = useRef(projectPath);
+  projectPathRef.current = projectPath;
+  useEffect(() => {
+    if (!projectPath) return;
+    const targetQueryHash = JSON.stringify(queryKeys.features.all(projectPath));
+    const unsubscribe = queryClient.getQueryCache().subscribe((event) => {
+      if (
+        event.type === 'updated' &&
+        event.action.type === 'success' &&
+        event.query.queryHash === targetQueryHash
+      ) {
+        const features = event.query.state.data as Feature[] | undefined;
+        if (features && projectPathRef.current) {
+          writePersistedFeatures(projectPathRef.current, features);
+        }
+      }
+    });
+    return unsubscribe;
+  }, [projectPath, queryClient]);
+
   return useQuery({
     queryKey: queryKeys.features.all(projectPath ?? ''),
     queryFn: async (): Promise<Feature[]> => {
@@ -166,7 +194,11 @@ export function useFeatures(projectPath: string | undefined) {
     },
     enabled: !!projectPath,
     initialData: () => persisted?.features,
-    initialDataUpdatedAt: () => persisted?.timestamp,
+    // Always treat localStorage cache as stale so React Query immediately
+    // fetches fresh data from the server on page load. This prevents stale
+    // feature statuses (e.g., 'verified' features appearing in backlog)
+    // while still showing cached data instantly for a fast initial render.
+    initialDataUpdatedAt: 0,
     staleTime: STALE_TIMES.FEATURES,
     refetchInterval: createSmartPollingInterval(FEATURES_POLLING_INTERVAL),
     refetchOnWindowFocus: FEATURES_REFETCH_ON_FOCUS,

apps/ui/src/hooks/queries/use-github.ts

@@ -8,7 +8,13 @@ import { useQuery, useInfiniteQuery } from '@tanstack/react-query';
 import { getElectronAPI } from '@/lib/electron';
 import { queryKeys } from '@/lib/query-keys';
 import { STALE_TIMES } from '@/lib/query-client';
-import type { GitHubIssue, GitHubPR, GitHubComment, StoredValidation } from '@/lib/electron';
+import type {
+  GitHubIssue,
+  GitHubPR,
+  GitHubComment,
+  PRReviewComment,
+  StoredValidation,
+} from '@/lib/electron';
 
 interface GitHubIssuesResult {
   openIssues: GitHubIssue[];
@@ -197,3 +203,45 @@ export function useGitHubIssueComments(
     staleTime: STALE_TIMES.GITHUB,
   });
 }
+
+/**
+ * Fetch review comments for a GitHub PR
+ *
+ * Fetches both regular PR comments and inline code review comments
+ * with file path and line context for each.
+ *
+ * @param projectPath - Path to the project
+ * @param prNumber - PR number
+ * @returns Query result with review comments
+ *
+ * @example
+ * ```tsx
+ * const { data, isLoading } = useGitHubPRReviewComments(projectPath, prNumber);
+ * const comments = data?.comments ?? [];
+ * ```
+ */
+export function useGitHubPRReviewComments(
+  projectPath: string | undefined,
+  prNumber: number | undefined
+) {
+  return useQuery({
+    queryKey: queryKeys.github.prReviewComments(projectPath ?? '', prNumber ?? 0),
+    queryFn: async (): Promise<{ comments: PRReviewComment[]; totalCount: number }> => {
+      if (!projectPath || !prNumber) throw new Error('Missing project path or PR number');
+      const api = getElectronAPI();
+      if (!api.github) {
+        throw new Error('GitHub API not available');
+      }
+      const result = await api.github.getPRReviewComments(projectPath, prNumber);
+      if (!result.success) {
+        throw new Error(result.error || 'Failed to fetch PR review comments');
+      }
+      return {
+        comments: (result.comments ?? []) as PRReviewComment[],
+        totalCount: result.totalCount ?? 0,
+      };
+    },
+    enabled: !!projectPath && !!prNumber,
+    staleTime: STALE_TIMES.GITHUB,
+  });
+}

apps/ui/src/hooks/use-settings-sync.ts

@@ -100,6 +100,7 @@ const SETTINGS_FIELDS_TO_SYNC = [
   'projectHistory',
   'projectHistoryIndex',
   'lastSelectedSessionByProject',
+  'currentWorktreeByProject',
   // Codex CLI Settings
   'codexAutoLoadAgents',
   'codexSandboxMode',
@@ -768,6 +769,8 @@ export async function refreshSettingsFromServer(): Promise<boolean> {
       projectHistory: serverSettings.projectHistory,
       projectHistoryIndex: serverSettings.projectHistoryIndex,
       lastSelectedSessionByProject: serverSettings.lastSelectedSessionByProject,
+      currentWorktreeByProject:
+        serverSettings.currentWorktreeByProject ?? currentAppState.currentWorktreeByProject,
       // UI State (previously in localStorage)
       worktreePanelCollapsed: serverSettings.worktreePanelCollapsed ?? false,
       lastProjectDir: serverSettings.lastProjectDir ?? '',