feat: 添加部门管理功能、主题切换和多语言支持

refactor(dashboard): 重构用户管理页面和路由结构

feat(server): 实现部门管理API和RBAC增强功能

docs: 更新用户手册和管理员指南文档

style: 统一图标使用和组件命名规范

test: 添加部门服务和数据隔离测试用例

chore: 更新依赖和配置文件

server/src/services/tenant/HierarchyService.ts

@@ -264,6 +264,132 @@ export class HierarchyService {
     logger.info(`[Hierarchy] Deleted department ${departmentId}`);
   }
 
+  /**
+   * [BE-MT002-04-01] 设置部门负责人
+   */
+  static async assignDepartmentManager(
+    departmentId: string,
+    tenantId: string,
+    managerId: string,
+    assignedBy: string
+  ): Promise<Department> {
+    const department = await db('cf_department')
+      .where('id', departmentId)
+      .where('tenant_id', tenantId)
+      .first();
+
+    if (!department) {
+      throw new Error('部门不存在');
+    }
+
+    const user = await db('cf_user')
+      .where('id', managerId)
+      .where('tenant_id', tenantId)
+      .where('status', 'ACTIVE')
+      .first();
+
+    if (!user) {
+      throw new Error('用户不存在或未激活');
+    }
+
+    await db('cf_department')
+      .where('id', departmentId)
+      .where('tenant_id', tenantId)
+      .update({
+        manager_id: managerId,
+        updated_at: new Date(),
+      });
+
+    const updatedDepartment = await db('cf_department')
+      .where('id', departmentId)
+      .where('tenant_id', tenantId)
+      .first();
+
+    await this.clearHierarchyCache(tenantId);
+
+    await EventBusService.publish({
+      type: 'hierarchy.department.manager_assigned',
+      data: {
+        departmentId,
+        tenantId,
+        managerId,
+        assignedBy,
+        timestamp: new Date(),
+      }
+    });
+
+    logger.info(`[Hierarchy] Assigned manager ${managerId} to department ${departmentId}`);
+
+    return updatedDepartment;
+  }
+
+  /**
+   * [BE-MT002-04-02] 获取部门负责人
+   */
+  static async getDepartmentManager(departmentId: string, tenantId: string): Promise<any> {
+    const department = await db('cf_department')
+      .where('id', departmentId)
+      .where('tenant_id', tenantId)
+      .first();
+
+    if (!department || !department.manager_id) {
+      return null;
+    }
+
+    const manager = await db('cf_user')
+      .where('id', department.manager_id)
+      .where('tenant_id', tenantId)
+      .select('id', 'username', 'email', 'role', 'status')
+      .first();
+
+    return manager;
+  }
+
+  /**
+   * [BE-MT002-04-03] 获取部门统计信息
+   */
+  static async getDepartmentStats(departmentId: string, tenantId: string): Promise<any> {
+    const department = await db('cf_department')
+      .where('id', departmentId)
+      .where('tenant_id', tenantId)
+      .first();
+
+    if (!department) {
+      throw new Error('部门不存在');
+    }
+
+    const [userCount, shopCount, subDepartmentCount] = await Promise.all([
+      db('cf_user')
+        .where('department_id', departmentId)
+        .where('tenant_id', tenantId)
+        .count('id as count')
+        .first(),
+      
+      db('cf_shop')
+        .where('department_id', departmentId)
+        .where('tenant_id', tenantId)
+        .count('id as count')
+        .first(),
+      
+      db('cf_department')
+        .where('parent_id', departmentId)
+        .where('tenant_id', tenantId)
+        .count('id as count')
+        .first(),
+    ]);
+
+    return {
+      departmentId,
+      departmentName: department.name,
+      userCount: Number(userCount?.count || 0),
+      shopCount: Number(shopCount?.count || 0),
+      subDepartmentCount: Number(subDepartmentCount?.count || 0),
+      managerId: department.manager_id,
+      status: department.status,
+      createdAt: department.created_at,
+    };
+  }
+
   /**
    * [BE-MT002-05] 创建店铺
    */