fix(grabaciones): wire the recordings library into Settings navigation

WU15 shipped PantallaGrabaciones (the recordings library: storage bar,
recording rows, the "..." Rename/Share/Delete menu) fully tested but
reachable from nowhere in the app - a gap flagged in WU15's own
apply-progress notes, not fixed there since it needed a design
decision rather than a guess.

Coordinator ruling applied: the approved mockup's "Ajustes > Grabaciones"
screen depicts the library, not the folder/size settings form. So the
GRABACIONES Y MUSICA group's "Grabaciones" row in pantalla_ajustes.dart
now opens PantallaGrabaciones instead of PantallaAjustesGrabaciones.
The settings form is not dropped - it stays reachable, now from within
the library via a settings icon in its PluriPushScaffold actions,
matching the existing pantalla_ajustes_timer_sueno.dart "Add" action
precedent for a real capability living in the header.

One new ARB key (en/es only, per precedent): recordingsLibrarySettingsTooltip.

Tests: 604 -> 605 (one scenario re-targeted in pantalla_ajustes_test.dart,
one new scenario in pantalla_grabaciones_test.dart, which needed the
same ListTile-ink-assertion suppression helper WU3a/WU3b established
since it now pushes a ListTile-bearing settings screen). flutter
analyze unchanged at 1 pre-existing info.

Recorded in tasks.md as WU15b - not part of the original 18-unit plan,
added here to close the gap WU15 flagged.

lib/l10n/app_en.arb

@@ -231,6 +231,7 @@
   "recordingRenameEmptyError": "Enter a name",
   "recordingDeleteConfirmTitle": "Delete recording?",
   "recordingDeleteConfirmMessage": "This can't be undone.",
+  "recordingsLibrarySettingsTooltip": "Recording settings",
   "stationOrderTitle": "Station order",
   "stationOrderByName": "By name",
   "stationOrderByQuality": "By quality",

lib/l10n/app_es.arb

@@ -231,6 +231,7 @@
   "recordingRenameEmptyError": "Ingresá un nombre",
   "recordingDeleteConfirmTitle": "¿Eliminar grabación?",
   "recordingDeleteConfirmMessage": "Esta acción no se puede deshacer.",
+  "recordingsLibrarySettingsTooltip": "Ajustes de grabación",
   "stationOrderTitle": "Orden de emisoras",
   "stationOrderByName": "Por nombre",
   "stationOrderByQuality": "Por calidad",

lib/l10n/gen/app_localizations.dart

@@ -868,6 +868,12 @@ abstract class AppLocalizations {
   /// **'Esta acción no se puede deshacer.'**
   String get recordingDeleteConfirmMessage;
 
+  /// No description provided for @recordingsLibrarySettingsTooltip.
+  ///
+  /// In es, this message translates to:
+  /// **'Ajustes de grabación'**
+  String get recordingsLibrarySettingsTooltip;
+
   /// No description provided for @stationOrderTitle.
   ///
   /// In es, this message translates to:

lib/l10n/gen/app_localizations_ar.dart

@@ -435,6 +435,9 @@ class AppLocalizationsAr extends AppLocalizations {
   String get recordingDeleteConfirmMessage =>
       'Esta acción no se puede deshacer.';
 
+  @override
+  String get recordingsLibrarySettingsTooltip => 'Ajustes de grabación';
+
   @override
   String get stationOrderTitle => 'ترتيب المحطات';
 

lib/l10n/gen/app_localizations_bn.dart

@@ -438,6 +438,9 @@ class AppLocalizationsBn extends AppLocalizations {
   String get recordingDeleteConfirmMessage =>
       'Esta acción no se puede deshacer.';
 
+  @override
+  String get recordingsLibrarySettingsTooltip => 'Ajustes de grabación';
+
   @override
   String get stationOrderTitle => 'স্টেশনের ক্রম';
 

lib/l10n/gen/app_localizations_de.dart

@@ -441,6 +441,9 @@ class AppLocalizationsDe extends AppLocalizations {
   String get recordingDeleteConfirmMessage =>
       'Esta acción no se puede deshacer.';
 
+  @override
+  String get recordingsLibrarySettingsTooltip => 'Ajustes de grabación';
+
   @override
   String get stationOrderTitle => 'Senderreihenfolge';
 

lib/l10n/gen/app_localizations_en.dart

@@ -435,6 +435,9 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get recordingDeleteConfirmMessage => 'This can\'t be undone.';
 
+  @override
+  String get recordingsLibrarySettingsTooltip => 'Recording settings';
+
   @override
   String get stationOrderTitle => 'Station order';
 

lib/l10n/gen/app_localizations_es.dart

@@ -439,6 +439,9 @@ class AppLocalizationsEs extends AppLocalizations {
   String get recordingDeleteConfirmMessage =>
       'Esta acción no se puede deshacer.';
 
+  @override
+  String get recordingsLibrarySettingsTooltip => 'Ajustes de grabación';
+
   @override
   String get stationOrderTitle => 'Orden de emisoras';
 

lib/l10n/gen/app_localizations_fr.dart

@@ -443,6 +443,9 @@ class AppLocalizationsFr extends AppLocalizations {
   String get recordingDeleteConfirmMessage =>
       'Esta acción no se puede deshacer.';
 
+  @override
+  String get recordingsLibrarySettingsTooltip => 'Ajustes de grabación';
+
   @override
   String get stationOrderTitle => 'Ordre des stations';
 

lib/l10n/gen/app_localizations_hi.dart

@@ -436,6 +436,9 @@ class AppLocalizationsHi extends AppLocalizations {
   String get recordingDeleteConfirmMessage =>
       'Esta acción no se puede deshacer.';
 
+  @override
+  String get recordingsLibrarySettingsTooltip => 'Ajustes de grabación';
+
   @override
   String get stationOrderTitle => 'स्टेशन क्रम';
 

lib/l10n/gen/app_localizations_id.dart

@@ -437,6 +437,9 @@ class AppLocalizationsId extends AppLocalizations {
   String get recordingDeleteConfirmMessage =>
       'Esta acción no se puede deshacer.';
 
+  @override
+  String get recordingsLibrarySettingsTooltip => 'Ajustes de grabación';
+
   @override
   String get stationOrderTitle => 'Urutan stasiun';
 

lib/l10n/gen/app_localizations_it.dart

@@ -439,6 +439,9 @@ class AppLocalizationsIt extends AppLocalizations {
   String get recordingDeleteConfirmMessage =>
       'Esta acción no se puede deshacer.';
 
+  @override
+  String get recordingsLibrarySettingsTooltip => 'Ajustes de grabación';
+
   @override
   String get stationOrderTitle => 'Ordine emittenti';
 

lib/l10n/gen/app_localizations_ja.dart

@@ -426,6 +426,9 @@ class AppLocalizationsJa extends AppLocalizations {
   String get recordingDeleteConfirmMessage =>
       'Esta acción no se puede deshacer.';
 
+  @override
+  String get recordingsLibrarySettingsTooltip => 'Ajustes de grabación';
+
   @override
   String get stationOrderTitle => '局の並び順';
 

lib/l10n/gen/app_localizations_pt.dart

@@ -438,6 +438,9 @@ class AppLocalizationsPt extends AppLocalizations {
   String get recordingDeleteConfirmMessage =>
       'Esta acción no se puede deshacer.';
 
+  @override
+  String get recordingsLibrarySettingsTooltip => 'Ajustes de grabación';
+
   @override
   String get stationOrderTitle => 'Ordem das estações';
 

lib/l10n/gen/app_localizations_ru.dart

@@ -439,6 +439,9 @@ class AppLocalizationsRu extends AppLocalizations {
   String get recordingDeleteConfirmMessage =>
       'Esta acción no se puede deshacer.';
 
+  @override
+  String get recordingsLibrarySettingsTooltip => 'Ajustes de grabación';
+
   @override
   String get stationOrderTitle => 'Порядок станций';
 

lib/l10n/gen/app_localizations_zh.dart

@@ -424,6 +424,9 @@ class AppLocalizationsZh extends AppLocalizations {
   String get recordingDeleteConfirmMessage =>
       'Esta acción no se puede deshacer.';
 
+  @override
+  String get recordingsLibrarySettingsTooltip => 'Ajustes de grabación';
+
   @override
   String get stationOrderTitle => '电台排序';
 

lib/pantallas/pantalla_ajustes.dart

@@ -9,7 +9,6 @@ import 'ajustes/pantalla_ajustes_backup.dart';
 import 'ajustes/pantalla_ajustes_ecualizador.dart';
 import 'ajustes/pantalla_ajustes_emisora_preferida.dart';
 import 'ajustes/pantalla_ajustes_emisoras_personalizadas.dart';
-import 'ajustes/pantalla_ajustes_grabaciones.dart';
 import 'ajustes/pantalla_ajustes_grupos_favoritos.dart';
 import 'ajustes/pantalla_ajustes_idioma.dart';
 import 'ajustes/pantalla_ajustes_info.dart';
@@ -18,6 +17,7 @@ import 'ajustes/pantalla_ajustes_orden_listas.dart';
 import 'ajustes/pantalla_ajustes_salida_audio.dart';
 import 'ajustes/pantalla_ajustes_timer_sueno.dart';
 import 'ajustes/widgets/fila_ajuste.dart';
+import 'pantalla_grabaciones.dart';
 
 class PantallaAjustes extends StatelessWidget {
   const PantallaAjustes({super.key});
@@ -142,10 +142,15 @@ class _AjustesContent extends StatelessWidget {
             FilaAjuste(
               icon: Icons.radio_button_checked_rounded,
               titulo: l10n.recordingsSectionTitle,
+              // WU15b: this row opens the recordings LIBRARY
+              // (PantallaGrabaciones), matching the approved mockup's
+              // "Ajustes > Grabaciones" screen. The folder/size settings
+              // form (PantallaAjustesGrabaciones) is still reachable, but
+              // now from within the library via its own settings action.
               onTap:
                   () => PluriPushScaffold.push(
                     context,
-                    (_) => const PantallaAjustesGrabaciones(),
+                    (_) => const PantallaGrabaciones(),
                   ),
             ),
             FilaAjuste(

lib/pantallas/pantalla_grabaciones.dart

@@ -13,6 +13,7 @@ import '../widgets/pluri_icon.dart';
 import '../widgets/pluri_layout.dart';
 import '../widgets/pluri_premium_widgets.dart';
 import '../widgets/pluri_push_scaffold.dart';
+import 'ajustes/pantalla_ajustes_grabaciones.dart';
 
 /// Inline-preview playback + duration lookup for a single recording file at
 /// a time (WU15, recordings-library spec — "Row playback starts and
@@ -228,6 +229,17 @@ class _PantallaGrabacionesState extends State<PantallaGrabaciones> {
 
     return PluriPushScaffold(
       title: l10n.recordingsLibraryTitle,
+      actions: [
+        IconButton(
+          icon: const Icon(Icons.settings_outlined),
+          tooltip: l10n.recordingsLibrarySettingsTooltip,
+          onPressed:
+              () => PluriPushScaffold.push(
+                context,
+                (_) => const PantallaAjustesGrabaciones(),
+              ),
+        ),
+      ],
       body: FutureBuilder<List<ArchivoGrabacion>>(
         future: _grabaciones,
         builder: (context, snap) {