feat(ui): add React Query hooks for data fetching

- Add useFeatures, useFeature, useAgentOutput for feature data
- Add useGitHubIssues, useGitHubPRs, useGitHubValidations, useGitHubIssueComments
- Add useClaudeUsage, useCodexUsage with polling intervals
- Add useRunningAgents, useRunningAgentsCount
- Add useWorktrees, useWorktreeInfo, useWorktreeStatus, useWorktreeDiffs
- Add useGlobalSettings, useProjectSettings, useCredentials
- Add useAvailableModels, useCodexModels, useOpencodeModels
- Add useSessions, useSessionHistory, useSessionQueue
- Add useIdeationPrompts, useIdeas
- Add CLI status queries (claude, cursor, codex, opencode, github)
- Add useCursorPermissionsQuery, useWorkspaceDirectories
- Add usePipelineConfig, useSpecFile, useSpecRegenerationStatus

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

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

@@ -0,0 +1,86 @@
+/**
+ * Ideation Query Hooks
+ *
+ * React Query hooks for fetching ideation prompts and ideas.
+ */
+
+import { useQuery } from '@tanstack/react-query';
+import { getElectronAPI } from '@/lib/electron';
+import { queryKeys } from '@/lib/query-keys';
+import { STALE_TIMES } from '@/lib/query-client';
+
+/**
+ * Fetch ideation prompts
+ *
+ * @returns Query result with prompts and categories
+ *
+ * @example
+ * ```tsx
+ * const { data, isLoading, error } = useIdeationPrompts();
+ * const { prompts, categories } = data ?? { prompts: [], categories: [] };
+ * ```
+ */
+export function useIdeationPrompts() {
+  return useQuery({
+    queryKey: queryKeys.ideation.prompts(),
+    queryFn: async () => {
+      const api = getElectronAPI();
+      const result = await api.ideation?.getPrompts();
+      if (!result?.success) {
+        throw new Error(result?.error || 'Failed to fetch prompts');
+      }
+      return {
+        prompts: result.prompts ?? [],
+        categories: result.categories ?? [],
+      };
+    },
+    staleTime: STALE_TIMES.SETTINGS, // Prompts rarely change
+  });
+}
+
+/**
+ * Fetch ideas for a project
+ *
+ * @param projectPath - Path to the project
+ * @returns Query result with ideas array
+ */
+export function useIdeas(projectPath: string | undefined) {
+  return useQuery({
+    queryKey: queryKeys.ideation.ideas(projectPath ?? ''),
+    queryFn: async () => {
+      if (!projectPath) throw new Error('No project path');
+      const api = getElectronAPI();
+      const result = await api.ideation?.listIdeas(projectPath);
+      if (!result?.success) {
+        throw new Error(result?.error || 'Failed to fetch ideas');
+      }
+      return result.ideas ?? [];
+    },
+    enabled: !!projectPath,
+    staleTime: STALE_TIMES.FEATURES,
+  });
+}
+
+/**
+ * Fetch a single idea by ID
+ *
+ * @param projectPath - Path to the project
+ * @param ideaId - ID of the idea
+ * @returns Query result with single idea
+ */
+export function useIdea(projectPath: string | undefined, ideaId: string | undefined) {
+  return useQuery({
+    queryKey: queryKeys.ideation.idea(projectPath ?? '', ideaId ?? ''),
+    queryFn: async () => {
+      if (!projectPath || !ideaId) throw new Error('Missing project path or idea ID');
+      const api = getElectronAPI();
+      const result = await api.ideation?.getIdea(projectPath, ideaId);
+      if (!result?.success) {
+        throw new Error(result?.error || 'Failed to fetch idea');
+      }
+      return result.idea;
+    },
+    enabled: !!projectPath && !!ideaId,
+    staleTime: STALE_TIMES.FEATURES,
+  });
+}