Handle pokes outside chat tabs

apps/chanora_flutter/test/services/ui_preferences_service_test.dart

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+import 'package:flutter_test/flutter_test.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import 'package:chanora_flutter/services/ui_preferences_service.dart';
+
+void main() {
+  late UiPreferencesService service;
+
+  setUp(() {
+    SharedPreferences.setMockInitialValues({});
+    service = const UiPreferencesService();
+  });
+
+  test('loads empty settings when preferences are unset', () async {
+    final settings = await service.loadSettings();
+
+    expect(settings.host, isEmpty);
+    expect(settings.nickname, isEmpty);
+    expect(settings.showPokeDialogs, isTrue);
+  });
+
+  test('saves and loads host and nickname independently', () async {
+    await service.saveSettings(host: 'example.com');
+    var settings = await service.loadSettings();
+
+    expect(settings.host, 'example.com');
+    expect(settings.nickname, isEmpty);
+
+    await service.saveSettings(nickname: 'Chanora');
+    settings = await service.loadSettings();
+
+    expect(settings.host, 'example.com');
+    expect(settings.nickname, 'Chanora');
+  });
+
+  test('saves poke dialog preference independently', () async {
+    await service.saveSettings(showPokeDialogs: false);
+    var settings = await service.loadSettings();
+
+    expect(settings.showPokeDialogs, isFalse);
+    expect(settings.host, isEmpty);
+    expect(settings.nickname, isEmpty);
+
+    await service.saveSettings(host: 'example.com');
+    settings = await service.loadSettings();
+
+    expect(settings.showPokeDialogs, isFalse);
+    expect(settings.host, 'example.com');
+  });
+
+  test('tracks permission explanation flag', () async {
+    expect(await service.hasExplainedPermissions(), isFalse);
+
+    await service.markPermissionsExplained();
+
+    expect(await service.hasExplainedPermissions(), isTrue);
+  });
+}