feat: 新增用车需求服务及线索管理全功能

- 新增后台用车服务配置模块，支持维护服务简介、优势与使用流程
- 新增需求线索管理页面，支持筛选、查看与更新用车线索状态
- 新增小程序用车需求页面，优化登录路径与回跳逻辑
- 优化车型卡片跳转与用车需求提交功能
- 新增服务端API与数据处理逻辑，完善权限校验
- 更新全站配置与API文档，新增相关测试用例

WonderQ-Admin/app/auth.py

@@ -88,5 +88,26 @@ def require_customer(
     return customer
 
 
+def optional_customer(
+    request: Request,
+    credentials: HTTPAuthorizationCredentials | None = Depends(bearer),
+    db: Session = Depends(get_db),
+) -> Customer | None:
+    if credentials is None:
+        return None
+    try:
+        payload = jwt.decode(credentials.credentials, get_settings().jwt_secret, algorithms=["HS256"])
+    except jwt.PyJWTError as exc:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="请先登录") from exc
+    if payload.get("typ") != "customer":
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="请先登录")
+    customer_id = payload.get("sub")
+    customer = db.get(Customer, customer_id) if customer_id else None
+    if not customer:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="请先登录")
+    request.state.actor_id = customer.id
+    return customer
+
+
 def get_actor_id(request: Request) -> str | None:
     return getattr(request.state, "actor_id", None)