feat: AIUI chat mode integration with iframe, context broker, overnight loop

- Chat mode: AIUI loads in sandboxed iframe at /dashboard/chat with transparent bg
- Mode switcher: Easy + Pro tabs only, Chat is a launcher button
- Keyboard shortcuts: Cmd+1 (Easy), Cmd+2 (Pro), Cmd+3 (Chat), Cmd+M (cycle)
- Directional transitions: chat slides from/to left, dashboard from/to right
- Context broker: postMessage protocol for quarantined AIUI communication
- AI permissions store: user-controlled toggles for data access categories
- Settings UI: AI Data Access section with per-category toggles
- AIUI container manifest and nginx proxy config for /aiui/
- Deploy script builds AIUI with /aiui/ base path
- Overnight loop infrastructure (loop.sh, prepare.sh, plan.md, prompt.md)
- Security hooks for autonomous overnight runs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

neode-ui/src/stores/uiMode.ts

@@ -25,9 +25,17 @@ export const useUIModeStore = defineStore('uiMode', () => {
     localStorage.setItem(STORAGE_KEY, newMode)
   }
 
+  function cycleMode(): UIMode {
+    const order: UIMode[] = ['easy', 'gamer']
+    const idx = order.indexOf(mode.value)
+    const next = order[(idx >= 0 ? idx + 1 : 0) % order.length] as UIMode
+    setMode(next)
+    return next
+  }
+
   const isGamer = computed(() => mode.value === 'gamer')
   const isEasy = computed(() => mode.value === 'easy')
   const isChat = computed(() => mode.value === 'chat')
 
-  return { mode, setMode, syncFromBackend, isGamer, isEasy, isChat }
+  return { mode, setMode, cycleMode, syncFromBackend, isGamer, isEasy, isChat }
 })