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/App.vue

@@ -77,12 +77,14 @@ import { useCLIStore } from '@/stores/cli'
 import { useMessageToast } from '@/composables/useMessageToast'
 import { useAppStore } from '@/stores/app'
 import { useScreensaverStore } from '@/stores/screensaver'
+import { useUIModeStore } from '@/stores/uiMode'
 
 const router = useRouter()
 const screensaverStore = useScreensaverStore()
 const spotlightStore = useSpotlightStore()
 const cliStore = useCLIStore()
 const appStore = useAppStore()
+const uiModeStore = useUIModeStore()
 const messageToast = useMessageToast()
 const toastMessage = messageToast.toastMessage
 
@@ -125,6 +127,19 @@ function onKeyDown(e: KeyboardEvent) {
     cliStore.toggle()
     return
   }
+  // Cmd+1/2/3 - switch UI mode (skip when in input)
+  if (mod && !isInput && appStore.isAuthenticated) {
+    if (e.key === '1') { e.preventDefault(); uiModeStore.setMode('easy'); router.push('/dashboard'); return }
+    if (e.key === '2') { e.preventDefault(); uiModeStore.setMode('gamer'); router.push('/dashboard'); return }
+    if (e.key === '3') { e.preventDefault(); router.push('/dashboard/chat'); return }
+  }
+  // Cmd+M / Ctrl+M - cycle UI mode (skip when in input)
+  if (mod && (e.key === 'm' || e.key === 'M') && !isInput && appStore.isAuthenticated) {
+    e.preventDefault()
+    uiModeStore.cycleMode()
+    router.push('/dashboard')
+    return
+  }
   // 's' key activates screensaver when authenticated (skip if typing in input)
   if (e.key === 's' || e.key === 'S') {
     const target = e.target as HTMLElement