零 Node 部署、超级管理员，并完善本地构建发布文档。

- FastAPI 单进程托管 frontend/dist，systemd 替代 PM2

- 超级管理员 admin、注册开关与用户管理

- README/DEPLOY/USAGE 说明：改代码须本地构建 dist 后 push，服务器 update.sh

- 提交 frontend/dist 与 build-frontend 脚本

backend/app/core/config.py

@@ -12,7 +12,11 @@ class Settings(BaseSettings):
     OLLAMA_BASE_URL: str = "http://127.0.0.1:11434"
     OLLAMA_MODEL: str = "qwen2.5:7b"
     FLUCTUATION_THRESHOLD: float = 0.08
-    CORS_ORIGINS: str = "http://localhost:5173,http://localhost:3000,http://localhost"
+    CORS_ORIGINS: str = "http://localhost:5173,http://localhost:23566,http://localhost"
+    WEB_PORT: int = 23566
+    FRONTEND_DIST: str = "../frontend/dist"
+    ADMIN_DEFAULT_USERNAME: str = "admin"
+    ADMIN_DEFAULT_PASSWORD: str = "admin123"
 
     class Config:
         env_file = ".env"

backend/app/core/deps.py

@@ -32,3 +32,9 @@ def get_current_user(
     if user is None:
         raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="用户不存在")
     return user
+
+
+def get_superuser(current_user: User = Depends(get_current_user)) -> User:
+    if not current_user.is_superuser:
+        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="需要超级管理员权限")
+    return current_user