Add Rate Monitor app — Booking.com + direct booking engine competitor rates

Combines Booking.com Playwright scraper (from forecasting), direct booking
engine scraper (ported from laptop-archive/guestline-monitor), and Newbook
own-hotel rates into one focused tool. Four views: Bookability, Market View
(with price index badges + direct rate sub-rows), Direct Rates (per-competitor
room breakdown, min-stay flags, hotel config/discovery), Rate Analysis
(advance purchase curve, DOW chart, rate timeline, comparison table).

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

docker-compose.yml

@@ -0,0 +1,36 @@
+services:
+  backend:
+    build: ./backend
+    security_opt:
+      - apparmor=unconfined
+    environment:
+      - DATABASE_URL=${DATABASE_URL}
+      - CENTRAL_AUTH_SECRET=${CENTRAL_AUTH_SECRET}
+      - APP_SLUG=rates
+      - SETTINGS_URL=${SETTINGS_URL:-}
+      - SETTINGS_SECRET=${SETTINGS_SECRET:-}
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8000/health"]
+      interval: 15s
+      timeout: 10s
+      retries: 10
+      start_period: 60s
+    restart: unless-stopped
+
+  frontend:
+    build:
+      context: ./frontend
+      args:
+        VITE_HOTEL_NAME: ${VITE_HOTEL_NAME:-Hotel}
+    security_opt:
+      - apparmor=unconfined
+    ports:
+      - "${FRONTEND_PORT:-3080}:80"
+    depends_on:
+      backend:
+        condition: service_healthy
+    restart: unless-stopped
+
+networks:
+  default:
+    driver: bridge