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

server/src/service/customer.service.ts

@@ -1,7 +1,7 @@
 import { Provide, Inject } from "@midwayjs/core";
 import { InjectRepository } from "@midwayjs/sequelize";
 import { Repository } from "sequelize-typescript";
-import { Op, UniqueConstraintError } from "sequelize";
+import { Op, UniqueConstraintError, fn, col } from "sequelize";
 import { Context } from "@midwayjs/koa";
 import Customer from "../entity/customer.entity";
 import CustomerDepartment from "../entity/customer_department.entity";
@@ -318,4 +318,50 @@ export class CustomerService {
 			data: rows.map((r) => r.toJSON())
 		};
 	}
+
+	async getStats(ctx: Context): Promise<any> {
+		const userId = ctx.state.user.userId;
+		const isAdmin = await this.isAdmin(userId);
+
+		const where: any = {};
+		if (!isAdmin) {
+			where.salesmanId = userId;
+		}
+
+		const total = await this.customerModel.count({ where });
+
+		const statusRows = await this.customerModel.findAll({
+			where,
+			attributes: ["status", [fn("COUNT", col("id")), "count"]],
+			group: ["status"],
+			raw: true
+		});
+
+		const levelRows = await this.customerModel.findAll({
+			where,
+			attributes: ["customer_level", [fn("COUNT", col("id")), "count"]],
+			group: ["customer_level"],
+			raw: true
+		});
+
+		const statusCounts: Record<number, number> = {};
+		for (const row of statusRows as any[]) {
+			if (row.status !== null && row.status !== undefined) {
+				statusCounts[row.status] = Number(row.count) || 0;
+			}
+		}
+
+		const levelCounts: Record<string, number> = {};
+		for (const row of levelRows as any[]) {
+			if (row.customer_level) {
+				levelCounts[row.customer_level] = Number(row.count) || 0;
+			}
+		}
+
+		return {
+			code: 200,
+			message: "获取客户统计成功",
+			data: { total, statusCounts, levelCounts }
+		};
+	}
 }