feat(M04-A): 完成定价快照与并发时段预占

backend/src/app.ts

@@ -29,6 +29,7 @@ import {
   registerStoreAccessRoutes,
   type StoreAccessRouteOptions
 } from './routes/store-access.js';
+import { registerPricingRoutes, type PricingRouteOptions } from './routes/pricing.js';
 
 export interface BuildAppOptions {
   config?: AppConfig;
@@ -39,6 +40,7 @@ export interface BuildAppOptions {
   content?: ContentRouteOptions;
   storeDiscovery?: StoreDiscoveryRouteOptions;
   storeAccess?: StoreAccessRouteOptions;
+  pricing?: PricingRouteOptions;
 }
 
 declare module 'fastify' {
@@ -102,6 +104,9 @@ export async function buildApp(options: BuildAppOptions = {}): Promise<FastifyIn
   if (options.storeAccess) {
     await registerStoreAccessRoutes(app, options.storeAccess);
   }
+  if (options.pricing) {
+    await registerPricingRoutes(app, options.pricing);
+  }
 
   return app;
 }