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/style.css

@@ -101,6 +101,109 @@
     box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
   }
 
+  /* Chat launcher button — sidebar (desktop) */
+  .chat-launcher-btn {
+    background: rgba(255, 255, 255, 0.06);
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    color: rgba(255, 255, 255, 0.8);
+    margin-top: 0.25rem;
+  }
+
+  .chat-launcher-btn:hover {
+    background: rgba(251, 146, 60, 0.15);
+    border-color: rgba(251, 146, 60, 0.3);
+    color: #fb923c;
+    transform: translateY(-1px);
+  }
+
+  /* Chat launcher button — mobile bottom bar */
+  .chat-launcher-btn-mobile {
+    color: rgba(255, 255, 255, 0.7);
+  }
+
+  .chat-launcher-btn-mobile:hover {
+    color: #fb923c;
+  }
+
+  /* Chat close button (floating pill) */
+  .chat-close-btn {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.5rem 0.75rem;
+    border-radius: 0.75rem;
+    background: rgba(0, 0, 0, 0.5);
+    backdrop-filter: blur(18px);
+    -webkit-backdrop-filter: blur(18px);
+    border: 1px solid rgba(255, 255, 255, 0.12);
+    color: rgba(255, 255, 255, 0.8);
+    cursor: pointer;
+    transition: all 0.25s ease;
+    user-select: none;
+  }
+
+  .chat-close-btn:hover {
+    background: rgba(0, 0, 0, 0.65);
+    border-color: rgba(255, 255, 255, 0.2);
+    color: rgba(255, 255, 255, 1);
+    transform: translateY(-1px);
+  }
+
+  /* Chat fullscreen layout — fills the view-wrapper container */
+  .chat-fullscreen {
+    width: 100%;
+    height: 100%;
+    display: flex;
+    flex-direction: column;
+    background: transparent;
+    position: relative;
+  }
+
+  .chat-mode-pill {
+    position: absolute;
+    top: 1rem;
+    right: 1rem;
+    z-index: 10;
+  }
+
+  .chat-iframe {
+    flex: 1;
+    width: 100%;
+    height: 100%;
+    border: none;
+    background: transparent;
+  }
+
+  /* Chat placeholder (no AIUI URL) */
+  .chat-placeholder {
+    flex: 1;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+  }
+
+  .chat-placeholder-inner {
+    text-align: center;
+    max-width: 28rem;
+    padding: 3rem;
+    border-radius: 1rem;
+    background: rgba(255, 255, 255, 0.05);
+    backdrop-filter: blur(18px);
+    -webkit-backdrop-filter: blur(18px);
+    border: 1px solid rgba(255, 255, 255, 0.1);
+  }
+
+  .chat-placeholder-icon {
+    width: 4rem;
+    height: 4rem;
+    margin: 0 auto 1.5rem;
+    border-radius: 9999px;
+    background: rgba(255, 255, 255, 0.1);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+  }
+
   /* Goal cards */
   .goal-card {
     cursor: pointer;