Add initial project configuration and setup for Reference Board Viewer application. Include EditorConfig for consistent coding styles, pre-commit hooks for linting and formatting, Docker Compose for local development with PostgreSQL and MinIO, and a Nix flake for development environment management. Establish CI/CD pipeline for automated testing and deployment.

docker-compose.dev.yml

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+version: '3.8'
+
+services:
+  # PostgreSQL Database
+  postgres:
+    image: postgres:16-alpine
+    container_name: webref-postgres
+    environment:
+      POSTGRES_DB: webref
+      POSTGRES_USER: webref
+      POSTGRES_PASSWORD: webref_dev_password
+      POSTGRES_INITDB_ARGS: "--encoding=UTF8 --locale=C"
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U webref"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    networks:
+      - webref-network
+
+  # MinIO Object Storage
+  minio:
+    image: minio/minio:latest
+    container_name: webref-minio
+    command: server /data --console-address ":9001"
+    environment:
+      MINIO_ROOT_USER: minioadmin
+      MINIO_ROOT_PASSWORD: minioadmin
+    ports:
+      - "9000:9000"  # API
+      - "9001:9001"  # Console UI
+    volumes:
+      - minio_data:/data
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:9000/minio/health/live"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    networks:
+      - webref-network
+
+  # MinIO Client - Create buckets on startup
+  minio-init:
+    image: minio/mc:latest
+    container_name: webref-minio-init
+    depends_on:
+      minio:
+        condition: service_healthy
+    entrypoint: >
+      /bin/sh -c "
+      /usr/bin/mc alias set myminio http://minio:9000 minioadmin minioadmin;
+      /usr/bin/mc mb myminio/webref --ignore-existing;
+      /usr/bin/mc policy set public myminio/webref;
+      exit 0;
+      "
+    networks:
+      - webref-network
+
+  # Redis (optional - for caching/background tasks)
+  redis:
+    image: redis:7-alpine
+    container_name: webref-redis
+    ports:
+      - "6379:6379"
+    volumes:
+      - redis_data:/data
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    networks:
+      - webref-network
+
+  # pgAdmin (optional - database management UI)
+  pgadmin:
+    image: dpage/pgadmin4:latest
+    container_name: webref-pgadmin
+    environment:
+      PGADMIN_DEFAULT_EMAIL: admin@webref.local
+      PGADMIN_DEFAULT_PASSWORD: admin
+      PGADMIN_CONFIG_SERVER_MODE: 'False'
+    ports:
+      - "5050:80"
+    volumes:
+      - pgadmin_data:/var/lib/pgadmin
+    depends_on:
+      - postgres
+    networks:
+      - webref-network
+
+volumes:
+  postgres_data:
+    driver: local
+  minio_data:
+    driver: local
+  redis_data:
+    driver: local
+  pgadmin_data:
+    driver: local
+
+networks:
+  webref-network:
+    driver: bridge
+
+# Usage:
+# Start all services:    docker-compose -f docker-compose.dev.yml up -d
+# Stop all services:     docker-compose -f docker-compose.dev.yml down
+# View logs:             docker-compose -f docker-compose.dev.yml logs -f
+# Reset volumes:         docker-compose -f docker-compose.dev.yml down -v
+