fix: align frontend API paths with backend endpoints

- handoffs: /handoffs/queue → /ai-sessions/queue, claim needs sessionId
- resolutions: /resolution-outputs → /outputs
- branches: /status suffix removed from PATCH path
- Add SessionQueuePage route at /queue

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/router.tsx

@@ -55,6 +55,7 @@ const ReviewQueuePage = lazyWithRetry(() => import('@/pages/ReviewQueuePage'))
 const FlowPilotAnalyticsPage = lazyWithRetry(() => import('@/pages/FlowPilotAnalyticsPage'))
 const ScriptBuilderPage = lazyWithRetry(() => import('@/pages/ScriptBuilderPage'))
 const KBAcceleratorPage = lazyWithRetry(() => import('@/pages/KBAcceleratorPage'))
+const SessionQueuePage = lazyWithRetry(() => import('@/pages/SessionQueuePage'))
 const GuidesHubPage = lazyWithRetry(() => import('@/pages/GuidesHubPage'))
 const GuideDetailPage = lazyWithRetry(() => import('@/pages/GuideDetailPage'))
 const AccountSettingsPage = lazyWithRetry(() => import('@/pages/AccountSettingsPage'))
@@ -200,6 +201,7 @@ export const router = sentryCreateBrowserRouter([
       { path: 'pilot', element: page(FlowPilotSessionPage) },
       { path: 'pilot/:sessionId', element: page(FlowPilotSessionPage) },
       { path: 'escalations', element: page(EscalationQueuePage) },
+      { path: 'queue', element: page(SessionQueuePage) },
       { path: 'review-queue', element: page(ReviewQueuePage) },
       { path: 'analytics/flowpilot', element: page(FlowPilotAnalyticsPage) },
       { path: 'guides', element: page(GuidesHubPage) },