refactor(客户管理): 完成客户管理模块UI与架构全面调整

1.  调整菜单与路由：重命名客户信息/客户账号为客户档案管理/客户小程序授权管理，移除客户建筑/房间路由，新增空间拓扑路由
2.  后端新增客户统计接口`/customers/stats`，前端同步API与类型定义
3.  重构客户档案与小程序授权页面，仅保留数据库支持字段，移除无支撑功能
4.  新增空间拓扑页面，合并建筑与房间管理为树形拓扑视图
5.  更新数据库种子数据与权限配置，清理废弃菜单与绑定关系
6.  补充UI设计文档与规范说明

client/src/router/index.ts

@@ -32,11 +32,11 @@ const routes: RouteRecordRaw[] = [
 			},
 			// 业务模块
 			{
-				path: "customer/info",
-				name: "CustomerInfo",
-				component: () => import("@/views/customer/info/index.vue"),
-				meta: { requiresAuth: true, title: "客户信息", permission: "customer:list" }
-			},
+					path: "customer/info",
+					name: "CustomerInfo",
+					component: () => import("@/views/customer/info/index.vue"),
+					meta: { requiresAuth: true, title: "客户档案管理", permission: "customer:list" }
+				},
 			{
 				path: "customer/department",
 				name: "CustomerDept",
@@ -47,7 +47,7 @@ const routes: RouteRecordRaw[] = [
 				path: "customer/account",
 				name: "CustomerAccount",
 				component: () => import("@/views/customer/account/index.vue"),
-				meta: { requiresAuth: true, title: "客户账号", permission: "customer:account" }
+				meta: { requiresAuth: true, title: "客户小程序授权管理", permission: "customer:account" }
 			},
 			{
 				path: "customer/visit",
@@ -56,16 +56,10 @@ const routes: RouteRecordRaw[] = [
 				meta: { requiresAuth: true, title: "客户拜访", permission: "customer:visit" }
 			},
 			{
-				path: "customer/building",
-				name: "CustomerBuilding",
-				component: () => import("@/views/customer/building/index.vue"),
-				meta: { requiresAuth: true, title: "客户建筑", permission: "customer:building" }
-			},
-			{
-				path: "customer/room",
-				name: "CustomerRoom",
-				component: () => import("@/views/customer/room/index.vue"),
-				meta: { requiresAuth: true, title: "客户房间", permission: "customer:room" }
+				path: "customer/topology",
+				name: "CustomerTopology",
+				component: () => import("@/views/customer/topology/index.vue"),
+				meta: { requiresAuth: true, title: "空间拓扑与用电架构", permission: "customer:topology" }
 			},
 			{
 				path: "project",