feat(M04-B): 完成订单状态机与迁移历史

backend/src/app.ts

@@ -30,6 +30,9 @@ import {
   type StoreAccessRouteOptions
 } from './routes/store-access.js';
 import { registerPricingRoutes, type PricingRouteOptions } from './routes/pricing.js';
+import {
+  registerOrderStateRoutes, type OrderStateRouteOptions
+} from './routes/order-state.js';
 
 export interface BuildAppOptions {
   config?: AppConfig;
@@ -41,6 +44,7 @@ export interface BuildAppOptions {
   storeDiscovery?: StoreDiscoveryRouteOptions;
   storeAccess?: StoreAccessRouteOptions;
   pricing?: PricingRouteOptions;
+  orderState?: OrderStateRouteOptions;
 }
 
 declare module 'fastify' {
@@ -107,6 +111,9 @@ export async function buildApp(options: BuildAppOptions = {}): Promise<FastifyIn
   if (options.pricing) {
     await registerPricingRoutes(app, options.pricing);
   }
+  if (options.orderState) {
+    await registerOrderStateRoutes(app, options.orderState);
+  }
 
   return app;
 }