Enable profiles switch UI

test/services/profile_manager_test.dart

@@ -0,0 +1,86 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:meshcore_sar_app/models/config_profile.dart';
+import 'package:meshcore_sar_app/services/profile_manager.dart';
+import 'package:meshcore_sar_app/services/profiles_feature_service.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  setUp(() {
+    SharedPreferences.setMockInitialValues({});
+    ProfileStorageScope.setScope(
+      profilesEnabled: false,
+      activeProfileId: ConfigProfile.defaultProfileId,
+    );
+  });
+
+  group('ProfileManager', () {
+    test(
+      'hides the built-in default profile until profiles are enabled',
+      () async {
+        final manager = ProfileManager();
+
+        await manager.initialize();
+
+        expect(manager.activeProfileId, ConfigProfile.defaultProfileId);
+        expect(manager.visibleProfiles, isEmpty);
+        expect(
+          manager.getProfile(ConfigProfile.defaultProfileId)?.isDefault,
+          isTrue,
+        );
+        expect(ProfileStorageScope.profilesEnabled, isFalse);
+        expect(ProfileStorageScope.effectiveNamespace, isNull);
+
+        await manager.setProfilesEnabled(true);
+
+        expect(manager.visibleProfiles, hasLength(1));
+        expect(
+          manager.visibleProfiles.single.id,
+          ConfigProfile.defaultProfileId,
+        );
+        expect(manager.visibleProfiles.single.name, 'Default');
+        expect(ProfileStorageScope.profilesEnabled, isTrue);
+        expect(ProfileStorageScope.effectiveNamespace, isNull);
+      },
+    );
+
+    test(
+      'persists custom profiles and restores scoped active profile state',
+      () async {
+        final manager = ProfileManager();
+        await manager.initialize();
+        await manager.setProfilesEnabled(true);
+
+        final profile = ConfigProfile(
+          id: 'profile-alpha',
+          name: 'Alpha',
+          createdAt: DateTime.parse('2026-03-16T12:00:00Z'),
+          updatedAt: DateTime.parse('2026-03-16T12:00:00Z'),
+          sections: const ConfigProfileSections(),
+        );
+
+        await manager.upsertProfile(profile);
+        await manager.setActiveProfileId(profile.id);
+
+        final reloaded = ProfileManager();
+        await reloaded.initialize();
+
+        expect(reloaded.profilesEnabled, isTrue);
+        expect(reloaded.activeProfileId, profile.id);
+        expect(reloaded.visibleProfiles.map((item) => item.id), [
+          ConfigProfile.defaultProfileId,
+          profile.id,
+        ]);
+        expect(reloaded.getProfile(profile.id)?.name, profile.name);
+        expect(ProfileStorageScope.effectiveNamespace, profile.id);
+
+        await reloaded.setProfilesEnabled(false);
+
+        expect(ProfileStorageScope.profilesEnabled, isFalse);
+        expect(ProfileStorageScope.effectiveNamespace, isNull);
+        expect(reloaded.activeProfileId, profile.id);
+      },
+    );
+  });
+}