Add initial setup for local HTTPS debugging and Nginx configuration

- Introduce `setup-certs.sh` script for generating trusted local TLS certificates using mkcert.
- Add Nginx configuration files for local and Docker environments to handle HTTPS requests and proxy to backend services.
- Update `docker-compose.yaml` to include Nginx service for unified TLS entry and adjust frontend service ports for local development.
- Create `AGENTS.md` and `README.md` files to document the local HTTPS setup process and usage instructions.
- Modify backend startup commands in `README.md` for consistency with new requirements.
- Add `.gitignore` to exclude generated certificates from version control.

backend/README.md

@@ -68,7 +68,7 @@ uv pip install fastapi "uvicorn[standard]" sqlalchemy asyncpg greenlet python-do
 
 cp .env.example .env          # CRUD 阶段只需 DATABASE_URL;语音再填模型 key
 # 起 Postgres:在 ai-video/ 下 docker compose up -d postgres
-.venv/bin/uvicorn app:app --reload --port 8000
+uv run --with-requirements requirements.txt uvicorn app:app --reload --port 8000
 ```
 
 > pipecat 相关代码用**惰性导入**,所以阶段 A 不装 pipecat 也能启动并跑 `/api/*` 与 `/health`;
@@ -82,7 +82,7 @@ api 服务挂了源码 + `--reload`,前端用 npm dev + HMR,改代码都即时
 
 ```bash
 cd ai-video
-docker compose up                 # 前台起 pg + api(:8000)+ ui(:3000),日志直出
+docker compose up                 # 前台起 pg + api(:8000)+ ui(:3030),日志直出
 docker compose up -d              # 后台起;看日志 docker compose logs -f api
 docker compose down               # 停止全部
 

backend/app.py

@@ -1,6 +1,6 @@
 """FastAPI 入口。挂载路由,放行前端跨域,启动时建表。
 
-启动:  uvicorn app:app --reload --port 8000
+启动:  uv run --with-requirements requirements.txt uvicorn app:app --reload --port 8000
 
 路由分组(对齐 dograh 的 routes/ 结构):
   /health              健康检查