chore: 初始化TikTok短剧后端项目基础架构

创建了完整的NestJS项目结构，包含配置文件、核心模块、工具类、拦截器、过滤器等基础代码，实现了健康检查、用户认证、管理员RBAC、剧集管理、订单支付、媒体管理等核心功能的基础框架，配置了ESLint、TypeScript、Jest等开发工具链。

test/api-standard.e2e-spec.ts

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+import { INestApplication } from '@nestjs/common';
+import { Test } from '@nestjs/testing';
+import * as request from 'supertest';
+import { validate as validateUuid, version as uuidVersion } from 'uuid';
+import { AppModule } from '../src/app.module';
+import { bootstrapApp } from '../src/bootstrap';
+import { loginAdmin } from './test-helpers';
+
+describe('API standard', () => {
+  let app: INestApplication;
+  let adminToken: string;
+
+  beforeAll(async () => {
+    const moduleRef = await Test.createTestingModule({
+      imports: [AppModule],
+    }).compile();
+
+    app = moduleRef.createNestApplication();
+    bootstrapApp(app);
+    await app.init();
+    adminToken = await loginAdmin(app);
+  });
+
+  afterAll(async () => {
+    await app.close();
+  });
+
+  it('wraps successful responses with code, data, message, timestamp, requestId and cost', async () => {
+    const response = await request(app.getHttpServer())
+      .get('/api/app/v1/health')
+      .expect(200);
+
+    expect(response.body).toEqual({
+      code: 0,
+      data: { status: 'ok' },
+      message: 'success',
+      timestamp: expect.any(Number),
+      requestId: expect.any(String),
+      cost: expect.stringMatching(/^\d+ms$/),
+    });
+    expect(validateUuid(response.body.requestId)).toBe(true);
+    expect(uuidVersion(response.body.requestId)).toBe(4);
+  });
+
+  it('reuses a valid X-Request-Id header', async () => {
+    const requestId = '0f5c2e16-1e44-4d55-93a4-ef7c66d9d1f2';
+
+    const response = await request(app.getHttpServer())
+      .get('/api/app/v1/health')
+      .set('X-Request-Id', requestId)
+      .expect(200);
+
+    expect(response.body.requestId).toBe(requestId);
+  });
+
+  it('wraps errors in the standard response shape', async () => {
+    const response = await request(app.getHttpServer())
+      .get('/api/app/v1/missing')
+      .expect(404);
+
+    expect(response.body).toEqual({
+      code: 404,
+      data: {},
+      message: expect.any(String),
+      timestamp: expect.any(Number),
+      requestId: expect.any(String),
+      cost: expect.stringMatching(/^\d+ms$/),
+    });
+  });
+
+  it('returns paginated lists using data.list and data.pagination', async () => {
+    const response = await request(app.getHttpServer())
+      .get('/api/admin/v1/logs/requests')
+      .set('Authorization', `Bearer ${adminToken}`)
+      .expect(200);
+
+    expect(response.body.code).toBe(0);
+    expect(response.body.data).toEqual({
+      list: expect.any(Array),
+      pagination: {
+        page: 1,
+        pageSize: 20,
+        total: expect.any(Number),
+      },
+    });
+  });
+
+  it('can query a request log by requestId', async () => {
+    const requestId = '180facd4-68f9-48c9-b6b1-3d8eab56a681';
+
+    await request(app.getHttpServer())
+      .get('/api/app/v1/health')
+      .set('X-Request-Id', requestId)
+      .expect(200);
+
+    const response = await request(app.getHttpServer())
+      .get(`/api/admin/v1/logs/requests/${requestId}`)
+      .set('Authorization', `Bearer ${adminToken}`)
+      .expect(200);
+
+    expect(response.body.data).toMatchObject({
+      requestId,
+      method: 'GET',
+      path: '/api/app/v1/health',
+      statusCode: 200,
+      responseCode: 0,
+      message: 'success',
+    });
+    expect(response.body.data.costMs).toEqual(expect.any(Number));
+  });
+});