feat: add room-planner app — 3-day HK room view with NewBook integration

NewBook-connected daily housekeeping planner. Replaces the hotelhubmodule-housekeeping-dailylist
WordPress plugin. LXC 120 · 10.10.10.120:3080 · slug: room-planner.

- 3-day booking window (yesterday/today/tomorrow) fetched live from NewBook
- Task completion ticks back to NewBook; room status patches NewBook directly
- 23px border sliver CSS system for adjacent-day booking status
- 3-state filter cycling (off→inclusive→exclusive) for categories and flow types
- Stat filters for outstanding tasks and clean/dirty status
- Rolling 48h activity log with checkout/checkin/status/tasks events
- newbook_pings event bus for future NewBook poller integration
- Room modal with permission-gated guest/rate/notes, task checkboxes, status buttons
- Placeholder sections for future linen-count and routine-tasks modules
- Settings page: task type colours, twin/extra-bed detection, category exclusions
- Mobile-first layout (sidebar desktop, compact top bar mobile)

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

docker-compose.yml

@@ -0,0 +1,38 @@
+services:
+  backend:
+    build: ./backend
+    security_opt:
+      - apparmor=unconfined
+    environment:
+      - DATABASE_URL=${DATABASE_URL}
+      - CENTRAL_AUTH_SECRET=${CENTRAL_AUTH_SECRET}
+      - SETTINGS_URL=${SETTINGS_URL}
+      - SETTINGS_SECRET=${SETTINGS_SECRET}
+      - APP_SLUG=room-planner
+      - OFFICE_IP_CHECK=${OFFICE_IP_CHECK:-disabled}
+      - NEWBOOK_LOCATION_ID=${NEWBOOK_LOCATION_ID}
+      - DEFAULT_CHECKOUT_TIME=${DEFAULT_CHECKOUT_TIME:-11:00}
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://127.0.0.1:3001/health || exit 1"]
+      interval: 10s
+      retries: 5
+      start_period: 20s
+    restart: unless-stopped
+
+  frontend:
+    build:
+      context: ./frontend
+      args:
+        VITE_HOTEL_NAME: ${VITE_HOTEL_NAME}
+    security_opt:
+      - apparmor=unconfined
+    ports:
+      - "${FRONTEND_PORT:-3080}:80"
+    depends_on:
+      backend:
+        condition: service_healthy
+    restart: unless-stopped
+
+networks:
+  default:
+    driver: bridge