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/api/routes/biz.ts

@@ -0,0 +1,18 @@
+import { Router } from 'express';
+import { requirePermission } from '../../core/guards/rbac.guard';
+import { requireTraceContext } from '../../core/guards/trace-context.guard';
+import { BizController } from '../controllers/BizController';
+
+const router = Router();
+
+/**
+ * [BIZ_START_01] 前期业务 API (Early Stage Business)
+ * @description 处理新手引导、极速刊登、店铺初始化等“冷启动”业务。
+ */
+router.get('/onboarding', requireTraceContext, BizController.getOnboarding);
+router.post('/localization/start', requireTraceContext, BizController.startLocalization); // [BIZ_TOC_01]
+router.post('/store/setup', requireTraceContext, requirePermission('tenant:setup'), BizController.setupStore);
+router.post('/listing/quick', requireTraceContext, requirePermission('product:write'), BizController.quickListing);
+router.get('/sourcing/radar', requireTraceContext, BizController.getSourcingRadar);
+
+export default router;