계정 정보 다이얼로그 추가 및 전체 목록 페치 개선

test/features/masters/product/presentation/widgets/vendor_autocomplete_field_test.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shadcn_ui/shadcn_ui.dart';
+
+import 'package:superport_v2/features/masters/product/presentation/widgets/vendor_autocomplete_field.dart';
+import 'package:superport_v2/features/masters/vendor/domain/entities/vendor.dart';
+
+void main() {
+  group('VendorAutocompleteField', () {
+    testWidgets('선택한 항목이 입력창에 반영된다', (tester) async {
+      final vendors = [
+        Vendor(
+          id: 1,
+          vendorCode: 'V001',
+          vendorName: '테스트 제조사',
+          isActive: true,
+          isDeleted: false,
+        ),
+      ];
+      int? selectedId;
+
+      await tester.pumpWidget(
+        ShadApp(
+          home: Scaffold(
+            body: Center(
+              child: VendorAutocompleteField(
+                initialOptions: vendors,
+                onSelected: (id) => selectedId = id,
+              ),
+            ),
+          ),
+        ),
+      );
+
+      // 포커스 후 옵션 선택
+      await tester.tap(find.byType(ShadInput));
+      await tester.pumpAndSettle();
+
+      // RawAutocomplete 옵션은 Overlay에 그려진다.
+      await tester.tap(find.text('테스트 제조사 (V001)'));
+      await tester.pumpAndSettle();
+
+      expect(selectedId, equals(1));
+
+      final editableText = tester.widget<EditableText>(find.byType(EditableText));
+      expect(editableText.controller.text, '테스트 제조사 (V001)');
+    });
+  });
+}