docs: rewrite deployment guide for Docker-only, add reverse proxy section

- Remove adminer service (not used with PostgreSQL)
- Rewrite 03-DEPLOYMENT.md: Docker Compose is the only supported method
- Add reverse proxy examples (Nginx, Caddy, Cloudflare Tunnel)
- Document trusted proxy configuration for Laravel
- Add production checklist and autoscript env var documentation
- Remove all Makefile references (not recommended)

docker-compose.yml

@@ -74,18 +74,6 @@ services:
       - tckdev_net
     restart: unless-stopped
 
-  adminer:
-    container_name: tckdev-adminer
-    image: adminer
-    restart: always
-    ports:
-      - "6060:8080"
-    depends_on:
-      postgres:
-        condition: service_healthy
-    networks:
-      - tckdev_net
-
 volumes:
   pgdata:
   pgadmin_data: