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>

.claude/hooks/post-deploy-check.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+# PostToolUse Bash hook: detect deploy commands and remind to test.
+# Triggers after deploy-to-target.sh runs.
+set -euo pipefail
+
+INPUT=$(cat)
+
+CMD=$(python3 -c "
+import json, sys
+try:
+    data = json.loads(sys.stdin.read())
+    print(data.get('tool_input', {}).get('command', ''))
+except: pass
+" <<< "$INPUT")
+
+# Only trigger on deploy commands or git push
+if ! echo "$CMD" | grep -qE 'deploy-to-target|git\s+push'; then
+  exit 0
+fi
+
+TIMESTAMP=$(date '+%Y-%m-%d %H:%M')
+
+python3 -c "
+import json
+
+message = '''Deploy detected at $TIMESTAMP.
+
+Post-deploy checklist:
+1. Test the web UI at http://192.168.1.228
+2. Verify modified apps load correctly
+3. Check backend logs: sudo journalctl -u archipelago -n 20
+4. Check nginx: sudo tail -f /var/log/nginx/error.log
+5. If building ISO, sync system configs to image-recipe/configs/
+6. Update CHANGELOG.md if this is a notable change'''
+
+output = {
+    'hookSpecificOutput': {
+        'hookEventName': 'PostToolUse',
+        'deployReminder': message
+    }
+}
+print(json.dumps(output))
+"