fixing categories 3rd normal form

server.ts

@@ -38,6 +38,7 @@ import receiptRouter from './src/routes/receipt.routes';
 import dealsRouter from './src/routes/deals.routes';
 import reactionsRouter from './src/routes/reactions.routes';
 import storeRouter from './src/routes/store.routes';
+import categoryRouter from './src/routes/category.routes';
 import { errorHandler } from './src/middleware/errorHandler';
 import { backgroundJobService, startBackgroundJobs } from './src/services/backgroundJobService';
 import { websocketService } from './src/services/websocketService.server';
@@ -288,6 +289,8 @@ app.use('/api/deals', dealsRouter);
 app.use('/api/reactions', reactionsRouter);
 // 16. Store management routes.
 app.use('/api/stores', storeRouter);
+// 17. Category discovery routes (ADR-023: Database Normalization)
+app.use('/api/categories', categoryRouter);
 
 // --- Error Handling and Server Startup ---