feat(admin): 方案A—消息铃铛接真实待办聚合 + 清理空壳接口与空卡片

【消息铃铛（真实数据）】
- POST /api/message/list 改为待办聚合：待接单订单/待审核大神/待审核提现/待处理举报/待仲裁工单（复用 getDashboardTodos + 新增 pendingOrdersCount）
- POST /api/message/read 持久化已读：新表 admin_message_reads 记录"已读时的数量"，待办数量增加会重新变未读
- 两个接口均加 requireAdmin（待办数量属运营数据，不再匿名可见）

【删除空壳/死接口（前端已无调用方）】
- /api/user/save-info、/api/chat/list、/api/user/my-team/list、/api/user/latest-activity、/api/user/my-project/list

【后台页面清理】
- 「用户与个人中心 → 管理员资料」移除 我的项目/最近动态/我的团队/站内通知 四张空卡（保留真实的管理员资料头部）
- 删除对应 4 个组件；api/user-center.ts 移除 queryMyProjectList/queryMyTeamList/queryLatestActivity/saveUserInfo；api/message.ts 移除 queryChatList

【验证】
- 新增 admin-todo-bell.spec.ts；更新 admin-demo-data-cleanup.spec.ts
- 全量 101 套件 / 690 用例全绿；冒烟 8/8（未登录50008、待办数量、已读、新增后重新未读）
- 后台 pnpm build 通过

server/src/db/mysql.ts

@@ -661,6 +661,15 @@ export async function initDatabase(): Promise<void> {
       ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
     `);
 
+    // 管理端消息铃铛：待办已读状态（记录已读时数量，新增待办会重新变未读）
+    await conn.query(`
+      CREATE TABLE IF NOT EXISTS admin_message_reads (
+        todo_key VARCHAR(64) PRIMARY KEY,
+        read_count INT NOT NULL DEFAULT 0,
+        read_at DATETIME DEFAULT CURRENT_TIMESTAMP
+      ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+    `);
+
     // 用户已领取的优惠券（券中心领取 → 下单核销 → 取消/退款回退）
     await conn.query(`
       CREATE TABLE IF NOT EXISTS user_coupons (

server/src/db/repository.ts

@@ -3729,6 +3729,13 @@ export class MysqlRepository {
     } catch (e) {
       logServerError('getDashboardTodos.reports', e);
     }
+    let pendingOrdersCount = 0;
+    try {
+      const [oRows]: any = await pool.query('SELECT COUNT(*) as c FROM orders WHERE status = "待接单"');
+      pendingOrdersCount = Number((oRows && oRows[0] && oRows[0].c) || 0);
+    } catch (e) {
+      logServerError('getDashboardTodos.orders', e);
+    }
 
     const pendingWithdrawalAmount = wdRows.reduce((sum: number, w: any) => sum + Number(w.amount), 0);
 
@@ -3737,6 +3744,7 @@ export class MysqlRepository {
       pendingArbitrationsCount: arbRows.length,
       pendingWithdrawalsCount: wdRows.length,
       pendingWithdrawalAmount,
+      pendingOrdersCount,
       pendingReportsCount: rptRows.length,
       riskInterceptionsCount: secRows.length,
       pendingAudits: auditRows.map((c: any) => ({
@@ -3768,6 +3776,38 @@ export class MysqlRepository {
     };
   }
 
+  /** 管理员待办"已读"状态：记录每个待办项已读时的数量，用于判断是否有新增待办 */
+  async getAdminTodoReadCounts(): Promise<Record<string, number>> {
+    try {
+      const [rows]: any = await pool.query('SELECT todo_key, read_count FROM admin_message_reads');
+      const map: Record<string, number> = {};
+      for (const r of rows || []) map[String(r.todo_key)] = Number(r.read_count) || 0;
+      return map;
+    } catch (e) {
+      logServerError('getAdminTodoReadCounts', e);
+      return {};
+    }
+  }
+
+  async markAdminTodosRead(items: Array<{ key: string; count: number }>): Promise<number> {
+    let affected = 0;
+    for (const it of items || []) {
+      if (!it || !it.key) continue;
+      try {
+        await pool.query(
+          `INSERT INTO admin_message_reads (todo_key, read_count, read_at)
+           VALUES (?, ?, NOW())
+           ON DUPLICATE KEY UPDATE read_count = VALUES(read_count), read_at = NOW()`,
+          [String(it.key), Number(it.count) || 0]
+        );
+        affected += 1;
+      } catch (e) {
+        logServerError('markAdminTodosRead', e);
+      }
+    }
+    return affected;
+  }
+
   // 全平台用户管理相关
   async getUsers(filter?: { keyword?: string; role?: string; status?: string }): Promise<any[]> {
     let sql = `