refactor(ajustes): split remaining Settings sections into pushed screens

test/pantallas/ajustes/pantalla_ajustes_backup_test.dart

@@ -0,0 +1,109 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:pluriwave/estado/estado_radio.dart';
+import 'package:pluriwave/l10n/gen/app_localizations.dart';
+import 'package:pluriwave/pantallas/ajustes/pantalla_ajustes_backup.dart';
+import 'package:pluriwave/widgets/pluri_push_scaffold.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../../helpers/fakes.dart';
+import '../../helpers/fakes_alarmas.dart';
+
+/// Pre-existing project constraint (see `pantalla_ajustes_test.dart`):
+/// PluriGlassSurface paints a background over ListTile's ink layer, which
+/// Flutter flags as a warning-level assertion, not a correctness bug.
+void _suppressListTileInkAssertion() {
+  final original = FlutterError.onError;
+  FlutterError.onError = (details) {
+    if (details.exceptionAsString().contains(
+      'ListTile background color or ink splashes may be invisible',
+    )) {
+      return;
+    }
+    original?.call(details);
+  };
+  addTearDown(() => FlutterError.onError = original);
+}
+
+/// WU3b task 3b.1: the APLICACIÓN detail screen for "Copia de seguridad"
+/// renders inside a [PluriPushScaffold] and its moved controls (export /
+/// import rows) are still present and reachable exactly as they were inside
+/// the old `_SeccionBackup`.
+///
+/// Both rows call into native plugins (`share_plus`, `file_picker`) that
+/// this suite does not mock, so this file verifies reachability (title and
+/// both row labels present, with a live `onTap`) rather than tapping through
+/// the native share/pick flow — the same conservative choice this batch
+/// makes for any moved control that would otherwise depend on an unmocked
+/// platform channel.
+void main() {
+  setUp(() {
+    SharedPreferences.setMockInitialValues({});
+  });
+
+  Future<File> archivoCustomVacio() async => File(
+    '${Directory.current.path}/test/fixtures/emisoras_custom_vacio.json',
+  );
+
+  Future<EstadoRadio> crearEstado() async {
+    return EstadoRadio(
+      audio: FakeServicioAudio(),
+      favoritos: FakeServicioFavoritos(),
+      radio: FakeServicioRadio(),
+      servicioEcualizador: FakeServicioEcualizador(),
+      servicioGrabacion: FakeServicioGrabacionRadioInactiva(),
+      resolverArchivoCustom: archivoCustomVacio,
+      iniciarAutomaticamente: false,
+    );
+  }
+
+  Widget buildScreen(EstadoRadio estado) {
+    return ChangeNotifierProvider<EstadoRadio>.value(
+      value: estado,
+      child: MaterialApp(
+        locale: const Locale('en'),
+        localizationsDelegates: AppLocalizations.localizationsDelegates,
+        supportedLocales: AppLocalizations.supportedLocales,
+        home: const PantallaAjustesBackup(),
+      ),
+    );
+  }
+
+  testWidgets('renders inside a PluriPushScaffold titled "Backup"', (
+    tester,
+  ) async {
+    _suppressListTileInkAssertion();
+    final estado = await crearEstado();
+    addTearDown(estado.dispose);
+
+    await tester.pumpWidget(buildScreen(estado));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 100));
+
+    expect(find.byType(PluriPushScaffold), findsOneWidget);
+    expect(find.text('Backup'), findsOneWidget);
+  });
+
+  testWidgets(
+    'moved controls still reachable: export and import rows both present',
+    (tester) async {
+      _suppressListTileInkAssertion();
+      final estado = await crearEstado();
+      addTearDown(estado.dispose);
+
+      await tester.pumpWidget(buildScreen(estado));
+      await tester.pump();
+      await tester.pump(const Duration(milliseconds: 100));
+
+      final exportTile = find.widgetWithText(ListTile, 'Export configuration');
+      final importTile = find.widgetWithText(ListTile, 'Import configuration');
+      expect(exportTile, findsOneWidget);
+      expect(importTile, findsOneWidget);
+      expect(tester.widget<ListTile>(exportTile).onTap, isNotNull);
+      expect(tester.widget<ListTile>(importTile).onTap, isNotNull);
+    },
+  );
+}

test/pantallas/ajustes/pantalla_ajustes_grabaciones_test.dart

@@ -0,0 +1,103 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:pluriwave/estado/estado_grabacion.dart';
+import 'package:pluriwave/l10n/gen/app_localizations.dart';
+import 'package:pluriwave/pantallas/ajustes/pantalla_ajustes_grabaciones.dart';
+import 'package:pluriwave/widgets/pluri_push_scaffold.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../../helpers/fakes_alarmas.dart';
+
+/// Pre-existing project constraint (see `pantalla_ajustes_test.dart`):
+/// PluriGlassSurface paints a background over ListTile's ink layer, which
+/// Flutter flags as a warning-level assertion, not a correctness bug.
+void _suppressListTileInkAssertion() {
+  final original = FlutterError.onError;
+  FlutterError.onError = (details) {
+    if (details.exceptionAsString().contains(
+      'ListTile background color or ink splashes may be invisible',
+    )) {
+      return;
+    }
+    original?.call(details);
+  };
+  addTearDown(() => FlutterError.onError = original);
+}
+
+/// WU3b task 3b.1: the GRABACIONES Y MÚSICA detail screen for "Grabaciones"
+/// renders inside a [PluriPushScaffold] and its moved controls still respond
+/// exactly as they did inside the old `_SeccionGrabaciones`.
+///
+/// This file deliberately does NOT interact with "Maximum recording size"
+/// (`_editarTamanoMaximo`): that control has a pre-existing, out-of-scope
+/// controller-dispose race (documented in `pantalla_ajustes_grabaciones.dart`
+/// and, for the analogous `_editarGrupo` case, in
+/// `pantalla_ajustes_grupos_favoritos_test.dart`) that this move does not
+/// fix. "Restore default path" is exercised instead — a real, moved
+/// capability with no such hazard.
+void main() {
+  setUp(() {
+    SharedPreferences.setMockInitialValues({});
+  });
+
+  Widget buildScreen(EstadoGrabacion estado) {
+    return ListenableProvider<EstadoGrabacion>.value(
+      value: estado,
+      child: MaterialApp(
+        locale: const Locale('en'),
+        localizationsDelegates: AppLocalizations.localizationsDelegates,
+        supportedLocales: AppLocalizations.supportedLocales,
+        home: const PantallaAjustesGrabaciones(),
+      ),
+    );
+  }
+
+  testWidgets('renders inside a PluriPushScaffold titled "Recordings"', (
+    tester,
+  ) async {
+    _suppressListTileInkAssertion();
+    final estado = EstadoGrabacion(
+      servicio: FakeServicioGrabacionRadioInactiva(),
+    );
+    addTearDown(estado.dispose);
+
+    await tester.pumpWidget(buildScreen(estado));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 100));
+
+    expect(find.byType(PluriPushScaffold), findsOneWidget);
+    expect(find.text('Recordings'), findsOneWidget);
+  });
+
+  testWidgets('moved control still responds: restore default path clears the '
+      'configured directory', (tester) async {
+    _suppressListTileInkAssertion();
+    final estado = EstadoGrabacion(
+      servicio: FakeServicioGrabacionRadioInactiva(),
+    );
+    addTearDown(estado.dispose);
+    await estado.cambiarDirectorio('/tmp/custom-recordings');
+    expect(estado.directorioConfigurado, '/tmp/custom-recordings');
+
+    await tester.pumpWidget(buildScreen(estado));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 100));
+
+    await tester.tap(find.byIcon(Icons.restore_rounded));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 100));
+
+    expect(estado.directorioConfigurado, isNull);
+    expect(
+      find.text('The default internal folder will be used'),
+      findsOneWidget,
+    );
+
+    // SnackBar's own dismiss Timer is not frame-scheduled — let it resolve
+    // before teardown (WU3a batch discovery) instead of leaving a pending
+    // Timer behind.
+    await tester.pump(const Duration(seconds: 5));
+    await tester.pumpAndSettle();
+  });
+}

test/pantallas/ajustes/pantalla_ajustes_idioma_test.dart

@@ -0,0 +1,72 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:pluriwave/estado/estado_idioma.dart';
+import 'package:pluriwave/l10n/gen/app_localizations.dart';
+import 'package:pluriwave/pantallas/ajustes/pantalla_ajustes_idioma.dart';
+import 'package:pluriwave/widgets/pluri_push_scaffold.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+/// WU3b task 3b.1: the APLICACIÓN detail screen for "Idioma" renders inside
+/// a [PluriPushScaffold] and its moved control (the language dropdown)
+/// still responds exactly as it did inside the old `_SeccionIdioma`.
+void main() {
+  setUp(() {
+    SharedPreferences.setMockInitialValues({});
+  });
+
+  Widget buildScreen(EstadoIdioma estado) {
+    return ChangeNotifierProvider<EstadoIdioma>.value(
+      value: estado,
+      child: MaterialApp(
+        locale: const Locale('en'),
+        localizationsDelegates: AppLocalizations.localizationsDelegates,
+        supportedLocales: AppLocalizations.supportedLocales,
+        home: const PantallaAjustesIdioma(),
+      ),
+    );
+  }
+
+  testWidgets('renders inside a PluriPushScaffold titled "Language"', (
+    tester,
+  ) async {
+    final estado = EstadoIdioma(
+      sharedPreferences: await SharedPreferences.getInstance(),
+    );
+    addTearDown(estado.dispose);
+
+    await tester.pumpWidget(buildScreen(estado));
+    await tester.pumpAndSettle();
+
+    expect(find.byType(PluriPushScaffold), findsOneWidget);
+    // "Language" legitimately renders twice here too (pre-existing,
+    // unmodified by this move): the pushed screen's title AND the
+    // dropdown's own floating label share the same l10n string.
+    expect(find.text('Language'), findsWidgets);
+  });
+
+  testWidgets('moved control still responds: selecting a language persists '
+      'it', (tester) async {
+    final estado = EstadoIdioma(
+      sharedPreferences: await SharedPreferences.getInstance(),
+    );
+    addTearDown(estado.dispose);
+
+    await tester.pumpWidget(buildScreen(estado));
+    await tester.pumpAndSettle();
+
+    await tester.tap(find.byType(DropdownButtonFormField<String>));
+    await tester.pumpAndSettle();
+    await tester.tap(find.text('Español').last);
+    await tester.pumpAndSettle();
+
+    expect(estado.localeSeleccionado, const Locale('es'));
+    expect(find.text('Language updated: Español'), findsOneWidget);
+
+    // SnackBar's own dismiss Timer is not frame-scheduled — let it resolve
+    // before teardown (WU3a batch discovery) instead of leaving a pending
+    // Timer behind.
+    await tester.pump(const Duration(seconds: 5));
+    await tester.pumpAndSettle();
+  });
+}

test/pantallas/ajustes/pantalla_ajustes_info_test.dart

@@ -0,0 +1,101 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:pluriwave/estado/estado_radio.dart';
+import 'package:pluriwave/l10n/gen/app_localizations.dart';
+import 'package:pluriwave/pantallas/ajustes/pantalla_ajustes_info.dart';
+import 'package:pluriwave/widgets/pluri_push_scaffold.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../../helpers/fakes.dart';
+import '../../helpers/fakes_alarmas.dart';
+
+/// Pre-existing project constraint (see `pantalla_ajustes_test.dart`):
+/// PluriGlassSurface paints a background over ListTile's ink layer, which
+/// Flutter flags as a warning-level assertion, not a correctness bug.
+void _suppressListTileInkAssertion() {
+  final original = FlutterError.onError;
+  FlutterError.onError = (details) {
+    if (details.exceptionAsString().contains(
+      'ListTile background color or ink splashes may be invisible',
+    )) {
+      return;
+    }
+    original?.call(details);
+  };
+  addTearDown(() => FlutterError.onError = original);
+}
+
+/// WU3b task 3b.1: the APLICACIÓN detail screen for "Info" renders inside a
+/// [PluriPushScaffold] and its moved controls (saved-favorites count, help
+/// row) still respond exactly as they did inside the old `_SeccionInfo`.
+/// Unlike the other four WU3b screens, this one never had its own header
+/// icon+title row to strip (see `pantalla_ajustes_info.dart`'s doc comment).
+void main() {
+  setUp(() {
+    SharedPreferences.setMockInitialValues({});
+  });
+
+  Future<File> archivoCustomVacio() async => File(
+    '${Directory.current.path}/test/fixtures/emisoras_custom_vacio.json',
+  );
+
+  Future<EstadoRadio> crearEstado() async {
+    return EstadoRadio(
+      audio: FakeServicioAudio(),
+      favoritos: FakeServicioFavoritos(),
+      radio: FakeServicioRadio(),
+      servicioEcualizador: FakeServicioEcualizador(),
+      servicioGrabacion: FakeServicioGrabacionRadioInactiva(),
+      resolverArchivoCustom: archivoCustomVacio,
+      iniciarAutomaticamente: false,
+    );
+  }
+
+  Widget buildScreen(EstadoRadio estado) {
+    return ChangeNotifierProvider<EstadoRadio>.value(
+      value: estado,
+      child: MaterialApp(
+        locale: const Locale('en'),
+        localizationsDelegates: AppLocalizations.localizationsDelegates,
+        supportedLocales: AppLocalizations.supportedLocales,
+        home: const PantallaAjustesInfo(),
+      ),
+    );
+  }
+
+  testWidgets('renders inside a PluriPushScaffold titled "Info"', (
+    tester,
+  ) async {
+    _suppressListTileInkAssertion();
+    final estado = await crearEstado();
+    addTearDown(estado.dispose);
+
+    await tester.pumpWidget(buildScreen(estado));
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 100));
+
+    expect(find.byType(PluriPushScaffold), findsOneWidget);
+    expect(find.text('Info'), findsOneWidget);
+  });
+
+  testWidgets(
+    'moved control still responds: saved favorites count reflects the '
+    'favorites list',
+    (tester) async {
+      _suppressListTileInkAssertion();
+      final estado = await crearEstado();
+      addTearDown(estado.dispose);
+
+      await tester.pumpWidget(buildScreen(estado));
+      await tester.pump();
+      await tester.pump(const Duration(milliseconds: 100));
+
+      expect(find.text('Saved favorites'), findsOneWidget);
+      expect(find.text('0'), findsOneWidget);
+      expect(find.text('Help and tutorial'), findsOneWidget);
+    },
+  );
+}

test/pantallas/ajustes/pantalla_ajustes_musica_local_test.dart

@@ -0,0 +1,68 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:pluriwave/l10n/gen/app_localizations.dart';
+import 'package:pluriwave/pantallas/ajustes/pantalla_ajustes_musica_local.dart';
+import 'package:pluriwave/widgets/pluri_push_scaffold.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+/// WU3b task 3b.1: the GRABACIONES Y MÚSICA detail screen for "Música local"
+/// renders inside a [PluriPushScaffold] and its moved controls (the
+/// android-auto-local-music-paging Phase 7 friendly-folder-name projection)
+/// still respond exactly as they did inside the old `_SeccionMusicaLocal`.
+///
+/// The two Phase 7 scenarios below are relocated verbatim from
+/// `pantalla_ajustes_test.dart`'s "_SeccionMusicaLocal — friendly folder
+/// name (Phase 7)" group, now targeting the isolated screen directly instead
+/// of scrolling to find it inside the whole Settings root.
+void main() {
+  Widget buildScreen() {
+    return const MaterialApp(
+      locale: Locale('en'),
+      localizationsDelegates: AppLocalizations.localizationsDelegates,
+      supportedLocales: AppLocalizations.supportedLocales,
+      home: PantallaAjustesMusicaLocal(),
+    );
+  }
+
+  testWidgets('renders inside a PluriPushScaffold titled "Local music (Android '
+      'Auto)"', (tester) async {
+    SharedPreferences.setMockInitialValues({});
+
+    await tester.pumpWidget(buildScreen());
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 100));
+
+    expect(find.byType(PluriPushScaffold), findsOneWidget);
+    expect(find.text('Local music (Android Auto)'), findsOneWidget);
+  });
+
+  testWidgets(
+    '7.1-A: carpeta configurada muestra el nombre amigable derivado de la '
+    'URI, nunca la URI cruda',
+    (tester) async {
+      SharedPreferences.setMockInitialValues({
+        'musica_local_uri':
+            'content://com.android.externalstorage.documents/tree/'
+            'primary%3AMusic%2FMyFolder',
+      });
+
+      await tester.pumpWidget(buildScreen());
+      await tester.pump();
+      await tester.pump(const Duration(milliseconds: 100));
+
+      expect(find.text('MyFolder'), findsOneWidget);
+      expect(find.textContaining('content://'), findsNothing);
+    },
+  );
+
+  testWidgets('7.1-B: sin carpeta configurada mantiene el mensaje '
+      'localMusicFolderNotConfigured', (tester) async {
+    SharedPreferences.setMockInitialValues({});
+
+    await tester.pumpWidget(buildScreen());
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 100));
+
+    expect(find.text('No folder selected'), findsOneWidget);
+  });
+}

test/pantallas/pantalla_ajustes_test.dart

@@ -88,15 +88,12 @@ void main() {
 
   // ── WU3a: AUDIO + EMISORAS become grouped nav rows ─────────────────────────
   //
-  // Design ADR-3: the root now carries zero inline controls for the 7
-  // sections WU3a moved (Ecualizador, Salida de audio, Temporizador de sueño,
-  // Grupos de favoritos, Emisora preferida, Emisoras personalizadas, Orden de
-  // listas) — each is reached through a FilaAjuste row instead. The other 5
-  // sections (Grabaciones, Música local, Idioma, Backup, Info) still render
-  // inline here: WU3b decomposes GRABACIONES Y MÚSICA / APLICACIÓN the same
-  // way, so the root is not yet under 400 lines nor fully "zero inline
-  // controls" — that end state is WU3b's completion, not WU3a's (see the
-  // apply-progress note on this discrepancy in tasks.md 3a.1/3a.8).
+  // Design ADR-3: the root carries zero inline controls for the 7 sections
+  // WU3a moved (Ecualizador, Salida de audio, Temporizador de sueño, Grupos
+  // de favoritos, Emisora preferida, Emisoras personalizadas, Orden de
+  // listas) — each is reached through a FilaAjuste row instead. WU3b (below)
+  // completes the remaining 5 sections, so the root is now exactly 4
+  // GrupoAjustes cards, under 400 lines.
   group('WU3a — AUDIO and EMISORAS groups', () {
     testWidgets('AUDIO group renders exactly 3 nav rows, no inline controls', (
       tester,
@@ -190,9 +187,66 @@ void main() {
     });
   });
 
-  // ── Sections not yet converted (WU3b's job) stay reachable ─────────────────
-  group('Sections pending WU3b remain inline and reachable', () {
-    testWidgets('Grabaciones, Idioma, Backup and Info still render', (
+  // ── WU3b: GRABACIONES Y MÚSICA + APLICACIÓN become grouped nav rows ───────
+  //
+  // Design ADR-3: the root now carries zero inline controls for the final 5
+  // sections (Grabaciones, Música local, Idioma, Backup, Info) — each is
+  // reached through a FilaAjuste row, matching WU3a's AUDIO/EMISORAS
+  // treatment. All 12 sections are decomposed now; the root is exactly 4
+  // GrupoAjustes cards and crosses under 400 lines (tasks.md 3b.5). The two
+  // "Phase 7" friendly-folder-name scenarios that used to live in this file
+  // are relocated verbatim to `ajustes/pantalla_ajustes_musica_local_test.dart`,
+  // now targeting the isolated pushed screen directly.
+  group('WU3b — GRABACIONES Y MÚSICA and APLICACIÓN groups', () {
+    testWidgets(
+      'RECORDINGS & MUSIC group renders exactly 2 nav rows, no inline '
+      'controls',
+      (tester) async {
+        setLargeSurface(tester);
+        _suppressListTileInkAssertion();
+        final estado = await crearEstado();
+        addTearDown(estado.dispose);
+
+        await tester.pumpWidget(buildAjustes(estado));
+        await pumpStable(tester);
+
+        expect(find.text('RECORDINGS & MUSIC'), findsOneWidget);
+        expect(find.text('Recordings'), findsOneWidget);
+        expect(find.text('Local music (Android Auto)'), findsOneWidget);
+
+        // Zero inline controls: the folder-path row, path action buttons and
+        // max-size row are gone from the root now.
+        expect(find.text('Change path'), findsNothing);
+        expect(find.text('Maximum recording size'), findsNothing);
+      },
+    );
+
+    testWidgets(
+      'APPLICATION group renders exactly 3 nav rows, no inline controls',
+      (tester) async {
+        setLargeSurface(tester);
+        _suppressListTileInkAssertion();
+        final estado = await crearEstado();
+        addTearDown(estado.dispose);
+
+        await tester.pumpWidget(buildAjustes(estado));
+        await pumpStable(tester);
+
+        expect(find.text('APPLICATION'), findsOneWidget);
+        // "Language" now renders exactly once at the root (the FilaAjuste
+        // row only) — the old inline dropdown's duplicate label is gone.
+        expect(find.text('Language'), findsOneWidget);
+        expect(find.text('Backup'), findsOneWidget);
+        expect(find.text('Info'), findsOneWidget);
+
+        // Zero inline controls: the language dropdown and export/import rows
+        // are gone from the root now.
+        expect(find.byType(DropdownButtonFormField<String>), findsNothing);
+        expect(find.text('Export configuration'), findsNothing);
+      },
+    );
+
+    testWidgets('tapping the Grabaciones row pushes its detail screen', (
       tester,
     ) async {
       setLargeSurface(tester);
@@ -203,50 +257,16 @@ void main() {
       await tester.pumpWidget(buildAjustes(estado));
       await pumpStable(tester);
 
-      expect(find.text('Recordings'), findsOneWidget);
-      // "Language" legitimately renders twice (pre-existing, unmodified by
-      // WU3a): the section header AND the dropdown's own label share the
-      // same l10n string.
-      expect(find.text('Language'), findsWidgets);
-      expect(find.text('Backup'), findsOneWidget);
-      expect(find.text('Help and tutorial'), findsOneWidget);
+      await tester.tap(find.text('Recordings'));
+      await pumpStable(tester);
+
+      expect(find.byType(PluriPushScaffold), findsOneWidget);
+      expect(find.text('Change path'), findsOneWidget);
     });
-  });
 
-  // ── android-auto-local-music-paging Phase 7: friendly folder name ────────
-  group('_SeccionMusicaLocal — friendly folder name (Phase 7)', () {
-    testWidgets(
-      '7.1-A: carpeta configurada muestra el nombre amigable derivado de '
-      'la URI, nunca la URI cruda',
-      (tester) async {
-        SharedPreferences.setMockInitialValues({
-          'musica_local_uri':
-              'content://com.android.externalstorage.documents/tree/'
-              'primary%3AMusic%2FMyFolder',
-        });
-        setLargeSurface(tester);
-        _suppressListTileInkAssertion();
-        final estado = await crearEstado();
-        addTearDown(estado.dispose);
-
-        await tester.pumpWidget(buildAjustes(estado));
-        await pumpStable(tester);
-
-        await tester.scrollUntilVisible(
-          find.text('Local music folder'),
-          300,
-          scrollable: find.byType(Scrollable).first,
-        );
-        await pumpStable(tester);
-
-        expect(find.text('MyFolder'), findsOneWidget);
-        expect(find.textContaining('content://'), findsNothing);
-      },
-    );
-
-    testWidgets('7.1-B: sin carpeta configurada mantiene el mensaje '
-        'localMusicFolderNotConfigured', (tester) async {
-      SharedPreferences.setMockInitialValues({});
+    testWidgets('tapping the Info row pushes its detail screen', (
+      tester,
+    ) async {
       setLargeSurface(tester);
       _suppressListTileInkAssertion();
       final estado = await crearEstado();
@@ -255,14 +275,28 @@ void main() {
       await tester.pumpWidget(buildAjustes(estado));
       await pumpStable(tester);
 
-      await tester.scrollUntilVisible(
-        find.text('Local music folder'),
-        300,
-        scrollable: find.byType(Scrollable).first,
-      );
+      await tester.tap(find.text('Info'));
       await pumpStable(tester);
 
-      expect(find.text('No folder selected'), findsOneWidget);
+      expect(find.byType(PluriPushScaffold), findsOneWidget);
+      expect(find.text('Help and tutorial'), findsOneWidget);
+    });
+
+    testWidgets('root now contains exactly 4 GrupoAjustes cards', (
+      tester,
+    ) async {
+      setLargeSurface(tester);
+      _suppressListTileInkAssertion();
+      final estado = await crearEstado();
+      addTearDown(estado.dispose);
+
+      await tester.pumpWidget(buildAjustes(estado));
+      await pumpStable(tester);
+
+      expect(find.text('AUDIO'), findsOneWidget);
+      expect(find.text('STATIONS'), findsOneWidget);
+      expect(find.text('RECORDINGS & MUSIC'), findsOneWidget);
+      expect(find.text('APPLICATION'), findsOneWidget);
     });
   });
 }