feat(canvas): TapNow - 支持公开画布导入 (#255)

(cherry picked from commit 9b96135a5e409b4718e6204ab4212b7ef22635aa)

backend/cmd/server/main.go

@@ -82,6 +82,7 @@ func main() {
 	handler.RegisterAnnouncementRoutes(api, svc)
 	handler.RegisterFinanceRoutes(api, svc)
 	handler.RegisterLibTVRoutes(api, svc)
+	handler.RegisterTapNowRoutes(api, svc)
 	// 登录态模型目录代理：避免浏览器直连各上游时分别处理 CORS。
 	handler.RegisterChannelModelRoutes(api, svc)
 	handler.RegisterLogicalModelRoutes(api, svc)