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/routers/admin.py

@@ -32,6 +32,7 @@ from ..models import (
     MediaAsset,
     SiteVersion,
     VehicleOption,
+    VehicleServiceConfig,
     WanfaCategory,
     WanfaRoute,
     utc_now,
@@ -153,6 +154,17 @@ SITE_CONFIG_MODULES = {
         "empty_to_none": {"description", "image"},
         "create_defaults": {"description": None, "image": None},
     },
+    "vehicleService": {
+        "model": VehicleServiceConfig,
+        "entity": "vehicle_service_config",
+        "primary": "introTitle",
+        "fields": {"introTitle", "intro", "serviceSections", "advantages", "processSteps", "isActive"},
+        "none_to_empty": set(),
+        "empty_to_none": set(),
+        "create_defaults": {"intro": "", "serviceSections": [], "advantages": [], "processSteps": []},
+        "ordered": False,
+        "singleton": True,
+    },
 }
 
 def media_error(status_code: int, message: str, code: str, details: dict | None = None) -> None:
@@ -318,8 +330,16 @@ def normalize_string_list(value) -> list[str]:
 
 
 def site_field_value(config: dict, field: str, value):
-    if field in {"steps", "chips"}:
+    if field in {"steps", "chips", "advantages"}:
         return normalize_string_list(value)
+    if field in {"serviceSections", "processSteps"}:
+        return [
+            {key: item_value.strip() for key, item_value in item.model_dump().items() if isinstance(item_value, str)}
+            if hasattr(item, "model_dump")
+            else {key: item_value.strip() for key, item_value in item.items() if isinstance(item_value, str)}
+            for item in (value or [])
+            if isinstance(item, dict) or hasattr(item, "model_dump")
+        ]
     value = clean_site_value(value)
     if value == "" and field in config.get("empty_to_none", set()):
         return None
@@ -1254,6 +1274,10 @@ def admin_site_config(_user: AdminUser = Depends(require_admin), db: Session = D
                 model_dict(item)
                 for item in db.scalars(select(VehicleOption).order_by(VehicleOption.sortOrder.asc())).all()
             ],
+            "vehicleService": [
+                model_dict(item)
+                for item in db.scalars(select(VehicleServiceConfig).order_by(VehicleServiceConfig.createdAt.asc())).all()
+            ],
             "demandHero": [
                 model_dict(item)
                 for item in db.scalars(select(DemandHero).order_by(DemandHero.sortOrder.asc())).all()
@@ -1372,6 +1396,7 @@ def delete_site_config(
 
 @router.get("/leads")
 def list_leads(
+    leadType: str | None = None,
     status_value: LeadStatus | None = Query(default=None, alias="status"),
     sourcePage: str | None = None,
     keyword: str | None = None,
@@ -1382,6 +1407,7 @@ def list_leads(
     db: Session = Depends(get_db),
 ):
     query = LeadQuery(
+        leadType=leadType,
         status=status_value,
         sourcePage=sourcePage,
         keyword=keyword,
@@ -1397,6 +1423,8 @@ def list_leads(
     )
     if query.status:
         stmt = stmt.where(Lead.status == query.status)
+    if query.leadType:
+        stmt = stmt.where(Lead.leadType == query.leadType)
     if query.sourcePage:
         stmt = stmt.where(Lead.sourcePage == query.sourcePage.strip())
     if query.createdFrom: