feat: 导航页SEO/GEO优化 + 手机端完全适配 + App候选码 + 业务系统板块

- SEO: 添加meta description/keywords/Open Graph/结构化数据/地理信息
- GEO: 添加geo.region/geo.position/ICBM等地理标记
- 手机端完全重写响应式: 咨询表单/导航卡片/hero区/标签全部适配
- 新增App候选码板块: 后台管理+导航页动态展示(支持录屏视频/下载链接)
- 新增业务系统板块: 进销存/OA/财务/工单等,支持按年/按月/定制定价
- 后台新增App候选码管理页面(增删改查+上下架)
- 后台新增业务系统管理页面(增删改查+上下架)
- 导航页设置新增新板块标题配置
- 公开API: GET /api/v1/showcase/apps + /api/v1/showcase/systems

main.go

@@ -92,12 +92,13 @@ func main() {
 	customerHandler := handler.NewCustomerHandler(db.DB, cfg)
 	accessLogHandler := handler.NewAccessLogHandler(db.DB)
 	configHandler := handler.NewConfigHandler(db.DB)
+	showcaseHandler := handler.NewShowcaseHandler(db.DB)
 
 	// IP 归属地查询服务
 	ipLocationService := geoip.NewService()
 
 	// 8. 设置路由
-	r := router.Setup(cfg, db, authHandler, userHandler, adminHandler, uploadHandler, enterpriseHandler, shopHandler, foodHandler, gameHandler, appHandler, musicHandler, dashboardHandler, customerHandler, accessLogHandler, configHandler, ipLocationService)
+	r := router.Setup(cfg, db, authHandler, userHandler, adminHandler, uploadHandler, enterpriseHandler, shopHandler, foodHandler, gameHandler, appHandler, musicHandler, dashboardHandler, customerHandler, accessLogHandler, configHandler, ipLocationService, showcaseHandler)
 
 	// 9. 配置嵌入式前端：18 套网站模板
 	setupFrontend(r)