refactor(arch): 落地平台架构演进第一二阶段整改，消除OOM与越权风险并支持高并发缓冲与AI多租户BYOK

- [P0安全底座] 多租户数据闭环：公开留资与雷达足迹自动逆向追溯绑定名片 tenantId 与归属销售 userId
- [P0性能稳定] 消除内存全量加载：公海池分批带条件扫描回收，雷达国家分布改用 SQL 原生 GROUP BY 聚合查询彻底消除 OOM 隐患
- [P0商业变现] 商业化配额门禁切面：在 Cool-Admin modifyBefore 生命周期织入 assertQuotaAvailable 校验，阻断超额名片创建
- [P0环境解耦] 客户端解耦本地硬编码：request.uts 支持 api_base_url 本地覆盖，生产数据库名修正为 crmmpdata
- [P1高并发削峰] 雷达足迹批量缓冲引擎：引入 CrmRadarBufferService 环形缓冲队列与阈值/定时批量 Bulk Insert 落盘
- [P2中枢租户化] AI 智能中枢多租户 BYOK 与 Token 成本风控：支持企业自带 Key 隔离、Token 消耗账本、用量配额门禁与名片人设个性化联动
- [跨端规范] 对齐 Uni-app x 移动微官网原生首屏与底部原生 tabBar 规范
- [测试驱动] 全工程 116 个测试套件，1,175 个单元与集成测试用例全部 100% 绿色通过，管理后台 Vite 打包无错误

backend/test/modules/card/event.test.ts

@@ -0,0 +1,138 @@
+import { CardEventService, normalizeEventCode } from '../../../src/modules/card/service/event';
+
+describe('P2 展会现场活动码与同场名片墙', () => {
+  let eventService: CardEventService;
+  let eventStore: any[];
+  let memberStore: any[];
+  let cardStore: any[];
+
+  function createRepo(store: any[], idStart = 1) {
+    let seq = idStart;
+    return {
+      findOne: jest.fn(async (opts: { where?: Record<string, unknown> }) => {
+        const where = opts?.where || {};
+        return (
+          store.find(row =>
+            Object.keys(where).every(key => row[key] === (where as any)[key])
+          ) || null
+        );
+      }),
+      find: jest.fn(async (opts?: { where?: Record<string, unknown> }) => {
+        const where = opts?.where || {};
+        return store.filter(row =>
+          Object.keys(where).every(key => row[key] === (where as any)[key])
+        );
+      }),
+      save: jest.fn(async (item: any) => {
+        if (item.id) {
+          const idx = store.findIndex(row => row.id === item.id);
+          if (idx >= 0) {
+            store[idx] = { ...store[idx], ...item };
+            return store[idx];
+          }
+        }
+        const saved = { ...item, id: item.id || seq++ };
+        store.push(saved);
+        return saved;
+      }),
+    };
+  }
+
+  beforeEach(() => {
+    eventStore = [];
+    memberStore = [];
+    cardStore = [
+      {
+        id: 101,
+        userId: 11,
+        tenantId: 1,
+        name: 'Alex Rivera',
+        title: 'VP',
+        company: 'OmniCard',
+        slug: 'alex',
+        status: 'published',
+      },
+      {
+        id: 103,
+        userId: 33,
+        tenantId: 1,
+        name: 'Chen Wei',
+        title: 'Sales',
+        company: 'OmniCard',
+        slug: 'chen-wei',
+        status: 'published',
+      },
+      {
+        id: 202,
+        userId: 22,
+        tenantId: 2,
+        name: 'Tariq Mansour',
+        title: 'Director',
+        company: 'Dubai Energy',
+        slug: 'tariq',
+        status: 'published',
+      },
+    ];
+    eventService = new CardEventService();
+    eventService.cardEventEntity = createRepo(eventStore) as any;
+    eventService.cardEventMemberEntity = createRepo(memberStore, 50) as any;
+    eventService.cardInfoEntity = createRepo(cardStore, 300) as any;
+  });
+
+  it('normalizeEventCode 只接受 6 位字母数字', () => {
+    expect(normalizeEventCode('ces26a')).toBe('CES26A');
+    expect(() => normalizeEventCode('12')).toThrow(/活动码/);
+    expect(() => normalizeEventCode('CES-26')).toThrow(/活动码/);
+  });
+
+  it('首次加入活动码会创建现场并写入成员', async () => {
+    const result = await eventService.joinEvent({
+      userId: 11,
+      code: 'ces26a',
+    });
+
+    expect(result.event.code).toBe('CES26A');
+    expect(result.event.status).toBe('active');
+    expect(result.member.userId).toBe(11);
+    expect(result.member.cardId).toBe(101);
+    expect(eventStore).toHaveLength(1);
+    expect(memberStore).toHaveLength(1);
+  });
+
+  it('同一用户重复加入同一现场只保留一行成员', async () => {
+    await eventService.joinEvent({ userId: 11, code: 'CES26A' });
+    await eventService.joinEvent({ userId: 11, code: 'ces26a' });
+
+    expect(eventStore).toHaveLength(1);
+    expect(memberStore).toHaveLength(1);
+  });
+
+  it('现场墙只返回同场他人已发布名片', async () => {
+    await eventService.joinEvent({ userId: 11, code: 'CES26A' });
+    await eventService.joinEvent({ userId: 33, code: 'CES26A' });
+    await eventService.joinEvent({ userId: 22, code: 'GITEX1' });
+
+    const page = await eventService.pageEventFloor({
+      userId: 11,
+      page: 1,
+      size: 20,
+    });
+
+    expect(page.list).toHaveLength(1);
+    expect(page.list[0].peerCardId).toBe(103);
+    expect(page.list[0].peerName).toBe('Chen Wei');
+    expect(page.list[0].source).toBe('event');
+    expect(page.list.find(row => row.peerCardId === 101)).toBeUndefined();
+    expect(page.list.find(row => row.peerCardId === 202)).toBeUndefined();
+  });
+
+  it('未加入现场时墙为空', async () => {
+    const page = await eventService.pageEventFloor({
+      userId: 11,
+      page: 1,
+      size: 20,
+    });
+    expect(page.list).toHaveLength(0);
+    expect(page.pagination.total).toBe(0);
+  });
+});