Initial commit: BOM Local Radar Card

- Custom Home Assistant card for displaying BOM radar data
- Docker-based build system (no local Node.js required)
- Test environment with Home Assistant and BOM service
- TypeScript source with LitElement framework
- HACS integration ready

docker-compose.test.yml

@@ -0,0 +1,49 @@
+services:
+  # BOM Local Service - provides radar data (using pre-built image)
+  bom-local-service:
+    image: ghcr.io/alexhopeoconnor/bom-local-service:latest
+    container_name: bom-card-test-service
+    ports:
+      - "8082:8080"
+    environment:
+      # ASP.NET Core configuration
+      - ASPNETCORE_ENVIRONMENT=Production
+      - ASPNETCORE_URLS=http://+:8080
+      # Virtual display for non-headless browser
+      - DISPLAY=:99
+      # CORS - allow requests from HA test instance (both container name and localhost)
+      - CORS__ALLOWEDORIGINS=http://homeassistant:8123,http://localhost:8124,http://127.0.0.1:8124
+      - CORS__ALLOWEDMETHODS=GET,POST,OPTIONS
+      - CORS__ALLOWEDHEADERS=*
+      - CORS__ALLOWCREDENTIALS=false
+      # Application configuration
+      - CACHEDIRECTORY=/app/cache
+      - CACHERETENTIONHOURS=24
+      - TIMEZONE=Australia/Brisbane
+    shm_size: '1gb'
+    ipc: host
+    restart: unless-stopped
+    networks:
+      - bom-test-network
+
+  # Home Assistant test instance
+  # HA runs as root (default) - we fix file permissions after it creates files
+  homeassistant:
+    container_name: bom-card-test-ha
+    image: "ghcr.io/home-assistant/home-assistant:stable"
+    volumes:
+      # Mount HA config directory
+      - ./test-ha/config:/config
+    environment:
+      - TZ=Australia/Brisbane
+    restart: unless-stopped
+    ports:
+      - "8124:8123"  # Use 8124 to avoid conflicts with main HA instance
+    depends_on:
+      - bom-local-service
+    networks:
+      - bom-test-network
+
+networks:
+  bom-test-network:
+    driver: bridge