feat(pos): implement integrated full-screen POS point-of-sale system with inventory deduction and thermal receipt

apps/backend/src/routes/products.ts

@@ -133,8 +133,13 @@ export const productsRoute = new Elysia({ prefix: "/products" })
           { translations: { some: { name: { contains: search, mode: "insensitive" as const } } } },
           { brand: { name: { contains: search, mode: "insensitive" as const } } },
           { category: { name: { contains: search, mode: "insensitive" as const } } },
+          { variants: { some: { OR: [
+            { barcode: { contains: search, mode: "insensitive" as const } },
+            { sku: { contains: search, mode: "insensitive" as const } }
+          ] } } },
         ],
       }),
+
     } as const;
 
     const [products, total] = await Promise.all([