Add remote development support with Docker Nginx configuration

- Introduce a new `nginx-remote-dev` service in `docker-compose.yaml` for remote development environments, allowing Nginx to proxy requests to the host machine's frontend and backend services.
- Create a new Nginx configuration file `ai-video.remote-dev.conf` tailored for remote setups, ensuring proper handling of WebSocket and API requests.
- Update `README.md` to include detailed instructions for setting up remote development with Nginx, including certificate generation and service initialization.
- Enhance the `setup-certs.sh` script to support additional hostnames for certificate signing, improving flexibility for remote access.
- Revise documentation to clarify the development paths and requirements for local and remote environments.

docker-compose.yaml

@@ -153,6 +153,22 @@ services:
       - ui
     networks: [app-network]
 
+  # ---- 可选(profile: remote-dev):远程开发机 Docker nginx + 宿主机 npm/uvicorn ----
+  # 宿主机单独启动:
+  #   frontend: NEXT_PUBLIC_API_BASE_URL=https://<host> npm run dev -- --hostname 0.0.0.0
+  #   backend:  uvicorn app:app --host 0.0.0.0 --port 8000 --reload
+  nginx-remote-dev:
+    image: nginx:alpine
+    profiles: ["remote-dev"]
+    ports:
+      - "80:80"
+      - "443:443"
+    volumes:
+      - ./deploy/nginx/ai-video.remote-dev.conf:/etc/nginx/nginx.conf:ro
+      - ./deploy/certs:/etc/nginx/certs:ro
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+
 volumes:
   postgres_data:
   redis_data: