fix(gunicorn): preload 後重置 SQLAlchemy 連線池

docker-compose.yml

@@ -47,8 +47,8 @@ services:
       - "com.centurylinklabs.watchtower.enable=true"
     ports:
       - "127.0.0.1:5003:80"  # 僅本地連線，透過 Nginx 反向代理（nginx 反代 5003）
-    # 強制使用 gunicorn 綁定 port 80 (覆蓋 Dockerfile CMD)
-    command: ["gunicorn", "--bind", "0.0.0.0:80", "--workers", "4", "--timeout", "300", "--access-logfile", "-", "--error-logfile", "-", "--preload", "app:app"]
+    # 強制使用 gunicorn 綁定 port 80 (覆蓋 Dockerfile CMD)；preload + post_fork DB pool reset 見 gunicorn.conf.py
+    command: ["gunicorn", "--config", "gunicorn.conf.py", "app:app"]
     volumes:
       # 持久化數據
       - ./data:/app/data