재고 상세 다이얼로그화 및 마스터 레이아웃 개선

test/features/masters/product/presentation/pages/product_page_test.dart

@@ -312,5 +312,51 @@ void main() {
       expect(find.text('NP-001'), findsOneWidget);
       verify(() => productRepository.create(any())).called(1);
     });
+
+    testWidgets('좁은 폭에서도 오버플로 없이 렌더링', (tester) async {
+      when(
+        () => productRepository.list(
+          page: any(named: 'page'),
+          pageSize: any(named: 'pageSize'),
+          query: any(named: 'query'),
+          vendorId: any(named: 'vendorId'),
+          uomId: any(named: 'uomId'),
+          isActive: any(named: 'isActive'),
+        ),
+      ).thenAnswer(
+        (_) async => PaginatedResult<Product>(
+          items: [
+            Product(
+              id: 1,
+              productCode: 'P-SMALL',
+              productName: '좁은 화면 제품',
+              vendor: ProductVendor(
+                id: 1,
+                vendorCode: 'V-001',
+                vendorName: '슈퍼벤더',
+              ),
+              uom: ProductUom(id: 5, uomName: 'EA'),
+            ),
+          ],
+          page: 1,
+          pageSize: 20,
+          total: 1,
+        ),
+      );
+
+      await tester.pumpWidget(
+        _buildApp(
+          Center(
+            child: SizedBox(
+              width: 260,
+              child: ProductPage(routeUri: Uri(path: '/masters/products')),
+            ),
+          ),
+        ),
+      );
+      await tester.pumpAndSettle();
+
+      expect(tester.takeException(), isNull);
+    });
   });
 }