fix(ui): use typed controls for extension settings (#1509)

ui/flutter/test/features/extensions/presentation/widgets/extension_setting_field_test.dart

@@ -0,0 +1,79 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shadcn_flutter/shadcn_flutter.dart';
+import 'package:gopeed/api/model/extension.dart';
+import 'package:gopeed/features/extensions/presentation/widgets/extension_setting_field.dart';
+import 'package:gopeed/shared/widgets/app_text_field.dart';
+
+void main() {
+  Future<void> pumpField(WidgetTester tester, Setting setting, TextEditingController controller) async {
+    await tester.pumpWidget(
+      ShadcnApp(
+        home: Scaffold(
+          child: Center(
+            child: SizedBox(
+              width: 280,
+              child: ExtensionSettingField(setting: setting, controller: controller),
+            ),
+          ),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+  }
+
+  Setting setting(SettingType type) =>
+      Setting(name: 'test', title: 'Test setting', description: 'Description', required: false, type: type);
+
+  testWidgets('boolean switch loads and updates the saved value', (tester) async {
+    final controller = TextEditingController(text: 'true');
+    addTearDown(controller.dispose);
+    await pumpField(tester, setting(SettingType.boolean), controller);
+    expect(find.byType(AppTextField), findsNothing);
+    expect(tester.widget<Switch>(find.byType(Switch)).value, isTrue);
+    await tester.tap(find.byType(Switch));
+    await tester.pumpAndSettle();
+    expect(controller.text, 'false');
+    expect(tester.widget<Switch>(find.byType(Switch)).value, isFalse);
+  });
+
+  for (final type in [SettingType.string, SettingType.number]) {
+    testWidgets(
+      '$type options show labels and save selected values',
+      (tester) async {
+        final field = setting(type)..options = [Option(label: 'First', value: 1), Option(label: 'Second', value: 2)];
+        final controller = TextEditingController(text: '1');
+        addTearDown(controller.dispose);
+        await pumpField(tester, field, controller);
+        expect(find.byType(AppTextField), findsNothing);
+        expect(find.text('First'), findsOneWidget);
+        await tester.tap(find.byType(Select<String>));
+        await tester.pump();
+        await tester.pump(const Duration(milliseconds: 500));
+        await tester.tap(find.text('Second'));
+        await tester.pumpAndSettle();
+        expect(controller.text, '2');
+        expect(find.text('Second'), findsOneWidget);
+        expect(tester.takeException(), isNull);
+      },
+      variant: TargetPlatformVariant({TargetPlatform.android, TargetPlatform.macOS}),
+    );
+  }
+
+  testWidgets('number field accepts decimals and rejects nonnumeric input', (tester) async {
+    final controller = TextEditingController();
+    addTearDown(controller.dispose);
+    await pumpField(tester, setting(SettingType.number), controller);
+    await tester.enterText(find.byType(AppTextField), '-12.5');
+    expect(controller.text, '-12.5');
+    await tester.enterText(find.byType(AppTextField), 'invalid');
+    expect(controller.text, '-12.5');
+  });
+
+  testWidgets('string with empty options remains a text field', (tester) async {
+    final controller = TextEditingController(text: 'original');
+    addTearDown(controller.dispose);
+    await pumpField(tester, setting(SettingType.string)..options = [], controller);
+    await tester.enterText(find.byType(AppTextField), 'updated');
+    expect(controller.text, 'updated');
+  });
+}