feat: 初始化项目结构并添加核心功能模块

- 新增文档模板和导航结构
- 实现服务器基础API路由和控制器
- 添加扩展插件配置和前端框架
- 引入多租户和权限管理模块
- 集成日志和数据库配置
- 添加核心业务模型和类型定义

server/src/services/AdCreativeService.ts

@@ -0,0 +1,44 @@
+import { logger } from '../utils/logger';
+import db from '../config/database';
+
+export interface CreativeRequest {
+  tenantId: string;
+  productId: string;
+  platform: 'FB' | 'TIKTOK' | 'IG';
+  style: 'PROFESSIONAL' | 'CASUAL' | 'URGENT';
+}
+
+/**
+ * [BIZ_MKT_04] AI 广告素材自动生成 API
+ * @description 调用多模态 AI 模型为商品生成针对不同平台的广告文案与脚本
+ */
+export class AdCreativeService {
+  /**
+   * 生成广告素材 (BIZ_MKT_04)
+   */
+  static async generateCreative(req: CreativeRequest): Promise<any> {
+    logger.info(`[AdCreative] Generating ${req.platform} creative for Product: ${req.productId}`);
+
+    // 1. 获取商品基础信息
+    const product = await db('cf_product').where({ id: req.productId }).first();
+    if (!product) throw new Error('Product not found');
+
+    // 2. 模拟 AI 生成逻辑 (实际中应集成 LLM)
+    const adCopy = this.mockAiGen(product.title, req.platform, req.style);
+
+    return {
+      productId: req.productId,
+      platform: req.platform,
+      adCopy,
+      hook: "Don't miss out on this deal!",
+      cta: "Shop Now"
+    };
+  }
+
+  private static mockAiGen(title: string, platform: string, style: string): string {
+    if (platform === 'TIKTOK') {
+      return `🔥 Trending Now: ${title}! Get yours before it's gone! #viral #shop`;
+    }
+    return `Special Offer: High-quality ${title} available now. Free shipping on orders over $50.`;
+  }
+}