test: add widget tests for SettingsPage

- Add 14 widget tests covering:
  - Settings header and section displays
  - Appearance section with theme dropdown options
  - Navigation section with default room dropdown
  - Account section with user info (name, email, roles)
  - Theme icons for system/light/dark modes
  - Three section cards layout

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

test/features/settings/presentation/pages/settings_page_test.dart

@@ -0,0 +1,172 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:tatlock_ui/core/theme/theme_provider.dart';
+import 'package:tatlock_ui/features/settings/presentation/pages/settings_page.dart';
+
+import '../../../../harness/test_harness.dart';
+
+void main() {
+  final harness = TestHarness();
+
+  setUp(() => harness.setUp());
+  tearDown(() => harness.tearDown());
+
+  group('SettingsPage', () {
+    testWidgets('displays Settings header', (tester) async {
+      harness.givenAuthenticatedUser();
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      expect(find.text('Settings'), findsOneWidget);
+    });
+
+    testWidgets('displays Appearance section', (tester) async {
+      harness.givenAuthenticatedUser();
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      expect(find.text('APPEARANCE'), findsOneWidget);
+      expect(find.text('Theme'), findsOneWidget);
+      expect(find.text('Choose your preferred color scheme'), findsOneWidget);
+    });
+
+    testWidgets('displays theme dropdown with options', (tester) async {
+      harness.givenAuthenticatedUser();
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      // Find and tap the theme dropdown
+      final dropdown = find.byType(DropdownButton<ThemeSetting>);
+      expect(dropdown, findsOneWidget);
+
+      await tester.tap(dropdown);
+      await tester.pumpAndSettle();
+
+      // Should show all theme options (may appear twice: selected + menu item)
+      expect(find.text('System'), findsWidgets);
+      expect(find.text('Light'), findsWidgets);
+      expect(find.text('Dark'), findsWidgets);
+    });
+
+    testWidgets('displays Navigation section', (tester) async {
+      harness.givenAuthenticatedUser();
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      expect(find.text('NAVIGATION'), findsOneWidget);
+      expect(find.text('Default Room'), findsOneWidget);
+      expect(find.text('Room to show when app opens'), findsOneWidget);
+    });
+
+    testWidgets('displays room dropdown with options', (tester) async {
+      harness.givenAuthenticatedUser();
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      // Find the room dropdown (second DropdownButton)
+      final dropdowns = find.byType(DropdownButton<String>);
+      expect(dropdowns, findsOneWidget);
+
+      await tester.tap(dropdowns);
+      await tester.pumpAndSettle();
+
+      // Should show room options from registry
+      expect(find.text('Front Hall'), findsWidgets);
+    });
+
+    testWidgets('displays Account section', (tester) async {
+      harness.givenAuthenticatedUser();
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      expect(find.text('ACCOUNT'), findsOneWidget);
+      expect(find.text('Name'), findsOneWidget);
+      expect(find.text('Email'), findsOneWidget);
+    });
+
+    testWidgets('displays user name from auth state', (tester) async {
+      harness.givenAuthenticatedUser(name: 'John Doe');
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      expect(find.text('John Doe'), findsOneWidget);
+    });
+
+    testWidgets('displays user email from auth state', (tester) async {
+      harness.givenAuthenticatedUser(email: 'john@example.com');
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      expect(find.text('john@example.com'), findsOneWidget);
+    });
+
+    testWidgets('displays admin role for admin user', (tester) async {
+      harness.givenAdminUser();
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      expect(find.text('Roles'), findsOneWidget);
+      expect(find.textContaining('admin.general:admin'), findsOneWidget);
+    });
+
+    testWidgets('displays theme icon for system theme', (tester) async {
+      harness.givenAuthenticatedUser();
+      harness.givenThemeMode(ThemeMode.system);
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      expect(find.byIcon(Icons.brightness_auto), findsOneWidget);
+    });
+
+    testWidgets('displays theme icon for light theme', (tester) async {
+      harness.givenAuthenticatedUser();
+      harness.givenThemeMode(ThemeMode.light);
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      expect(find.byIcon(Icons.light_mode), findsOneWidget);
+    });
+
+    testWidgets('displays theme icon for dark theme', (tester) async {
+      harness.givenAuthenticatedUser();
+      harness.givenThemeMode(ThemeMode.dark);
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      expect(find.byIcon(Icons.dark_mode), findsOneWidget);
+    });
+
+    testWidgets('displays account icons', (tester) async {
+      harness.givenAuthenticatedUser();
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      expect(find.byIcon(Icons.person_outline), findsOneWidget);
+      expect(find.byIcon(Icons.email_outlined), findsOneWidget);
+      expect(find.byIcon(Icons.home_outlined), findsOneWidget);
+    });
+
+    testWidgets('displays all three section cards', (tester) async {
+      harness.givenAuthenticatedUser();
+
+      await tester.pumpWidget(harness.wrap(const SettingsPage()));
+      await tester.pumpAndSettle();
+
+      // Should have 3 cards: Appearance, Navigation, Account
+      expect(find.byType(Card), findsNWidgets(3));
+    });
+  });
+}