fix(escuchar,reproductor): add the section-heading token and screen 1-3 polish

Audit S7 plus the open items on screens 1-3. Escuchar gains the
prototype's own 52px "now listening" eyebrow header (t4:53), which is
structurally different from the 56px title row every other root uses
(t4:325) -- the earlier wiring test asserted PluriRootHeader on all five
roots, an over-broad premise now corrected to guard what actually holds:
no AppBar, and the sleep-timer action still reachable.

lib/l10n/gen/app_localizations.dart

@@ -1402,6 +1402,12 @@ abstract class AppLocalizations {
   /// **'Abrir reproductor completo'**
   String get openFullPlayerTooltip;
 
+  /// No description provided for @nowListeningLabel.
+  ///
+  /// In es, this message translates to:
+  /// **'Escuchando ahora'**
+  String get nowListeningLabel;
+
   /// No description provided for @nothingPlayingTitle.
   ///
   /// In es, this message translates to:
@@ -1474,6 +1480,12 @@ abstract class AppLocalizations {
   /// **'Esta semana'**
   String get exploreNewSubtitle;
 
+  /// No description provided for @popularNowTitle.
+  ///
+  /// In es, this message translates to:
+  /// **'Populares ahora'**
+  String get popularNowTitle;
+
   /// No description provided for @offlineBannerTitle.
   ///
   /// In es, this message translates to:

lib/l10n/gen/app_localizations_ar.dart

@@ -745,6 +745,9 @@ class AppLocalizationsAr extends AppLocalizations {
   @override
   String get openFullPlayerTooltip => 'فتح المشغل الكامل';
 
+  @override
+  String get nowListeningLabel => 'الاستماع الآن';
+
   @override
   String get nothingPlayingTitle => 'لا تستمع إلى شيء بعد';
 
@@ -784,6 +787,9 @@ class AppLocalizationsAr extends AppLocalizations {
   @override
   String get exploreNewSubtitle => 'هذا الأسبوع';
 
+  @override
+  String get popularNowTitle => 'الأكثر شيوعًا الآن';
+
   @override
   String get offlineBannerTitle => 'لا يوجد اتصال';
 

lib/l10n/gen/app_localizations_bn.dart

@@ -748,6 +748,9 @@ class AppLocalizationsBn extends AppLocalizations {
   @override
   String get openFullPlayerTooltip => 'সম্পূর্ণ প্লেয়ার খুলুন';
 
+  @override
+  String get nowListeningLabel => 'এখন শোনা হচ্ছে';
+
   @override
   String get nothingPlayingTitle => 'এখনও কিছু চলছে না';
 
@@ -787,6 +790,9 @@ class AppLocalizationsBn extends AppLocalizations {
   @override
   String get exploreNewSubtitle => 'এই সপ্তাহে';
 
+  @override
+  String get popularNowTitle => 'এখন জনপ্রিয়';
+
   @override
   String get offlineBannerTitle => 'সংযোগ নেই';
 

lib/l10n/gen/app_localizations_de.dart

@@ -751,6 +751,9 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get openFullPlayerTooltip => 'Vollständigen Player öffnen';
 
+  @override
+  String get nowListeningLabel => 'Läuft gerade';
+
   @override
   String get nothingPlayingTitle => 'Es läuft noch nichts';
 
@@ -790,6 +793,9 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get exploreNewSubtitle => 'Diese Woche';
 
+  @override
+  String get popularNowTitle => 'Jetzt beliebt';
+
   @override
   String get offlineBannerTitle => 'Keine Verbindung';
 

lib/l10n/gen/app_localizations_en.dart

@@ -744,6 +744,9 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get openFullPlayerTooltip => 'Open full player';
 
+  @override
+  String get nowListeningLabel => 'Now listening';
+
   @override
   String get nothingPlayingTitle => 'Nothing playing yet';
 
@@ -783,6 +786,9 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get exploreNewSubtitle => 'This week';
 
+  @override
+  String get popularNowTitle => 'Popular now';
+
   @override
   String get offlineBannerTitle => 'No connection';
 

lib/l10n/gen/app_localizations_es.dart

@@ -749,6 +749,9 @@ class AppLocalizationsEs extends AppLocalizations {
   @override
   String get openFullPlayerTooltip => 'Abrir reproductor completo';
 
+  @override
+  String get nowListeningLabel => 'Escuchando ahora';
+
   @override
   String get nothingPlayingTitle => 'Todavía no estás escuchando nada';
 
@@ -788,6 +791,9 @@ class AppLocalizationsEs extends AppLocalizations {
   @override
   String get exploreNewSubtitle => 'Esta semana';
 
+  @override
+  String get popularNowTitle => 'Populares ahora';
+
   @override
   String get offlineBannerTitle => 'Sin conexión';
 

lib/l10n/gen/app_localizations_fr.dart

@@ -753,6 +753,9 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get openFullPlayerTooltip => 'Ouvrir le lecteur complet';
 
+  @override
+  String get nowListeningLabel => 'En cours d\'écoute';
+
   @override
   String get nothingPlayingTitle => 'Rien n\'est en cours de lecture';
 
@@ -792,6 +795,9 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get exploreNewSubtitle => 'Cette semaine';
 
+  @override
+  String get popularNowTitle => 'Populaire maintenant';
+
   @override
   String get offlineBannerTitle => 'Aucune connexion';
 

lib/l10n/gen/app_localizations_hi.dart

@@ -745,6 +745,9 @@ class AppLocalizationsHi extends AppLocalizations {
   @override
   String get openFullPlayerTooltip => 'पूरा प्लेयर खोलें';
 
+  @override
+  String get nowListeningLabel => 'अभी सुन रहे हैं';
+
   @override
   String get nothingPlayingTitle => 'अभी तक कुछ नहीं चल रहा';
 
@@ -784,6 +787,9 @@ class AppLocalizationsHi extends AppLocalizations {
   @override
   String get exploreNewSubtitle => 'इस सप्ताह';
 
+  @override
+  String get popularNowTitle => 'अभी लोकप्रिय';
+
   @override
   String get offlineBannerTitle => 'कोई कनेक्शन नहीं';
 

lib/l10n/gen/app_localizations_id.dart

@@ -745,6 +745,9 @@ class AppLocalizationsId extends AppLocalizations {
   @override
   String get openFullPlayerTooltip => 'Buka pemutar lengkap';
 
+  @override
+  String get nowListeningLabel => 'Sedang mendengarkan';
+
   @override
   String get nothingPlayingTitle => 'Belum ada yang diputar';
 
@@ -784,6 +787,9 @@ class AppLocalizationsId extends AppLocalizations {
   @override
   String get exploreNewSubtitle => 'Minggu ini';
 
+  @override
+  String get popularNowTitle => 'Populer sekarang';
+
   @override
   String get offlineBannerTitle => 'Tidak ada koneksi';
 

lib/l10n/gen/app_localizations_it.dart

@@ -751,6 +751,9 @@ class AppLocalizationsIt extends AppLocalizations {
   @override
   String get openFullPlayerTooltip => 'Apri il player completo';
 
+  @override
+  String get nowListeningLabel => 'In ascolto ora';
+
   @override
   String get nothingPlayingTitle => 'Non stai ancora ascoltando nulla';
 
@@ -790,6 +793,9 @@ class AppLocalizationsIt extends AppLocalizations {
   @override
   String get exploreNewSubtitle => 'Questa settimana';
 
+  @override
+  String get popularNowTitle => 'Popolari ora';
+
   @override
   String get offlineBannerTitle => 'Nessuna connessione';
 

lib/l10n/gen/app_localizations_ja.dart

@@ -720,6 +720,9 @@ class AppLocalizationsJa extends AppLocalizations {
   @override
   String get openFullPlayerTooltip => 'フルプレーヤーを開く';
 
+  @override
+  String get nowListeningLabel => '再生中';
+
   @override
   String get nothingPlayingTitle => 'まだ何も再生されていません';
 
@@ -758,6 +761,9 @@ class AppLocalizationsJa extends AppLocalizations {
   @override
   String get exploreNewSubtitle => '今週';
 
+  @override
+  String get popularNowTitle => '今人気';
+
   @override
   String get offlineBannerTitle => '接続なし';
 

lib/l10n/gen/app_localizations_pt.dart

@@ -748,6 +748,9 @@ class AppLocalizationsPt extends AppLocalizations {
   @override
   String get openFullPlayerTooltip => 'Abrir player completo';
 
+  @override
+  String get nowListeningLabel => 'Ouvindo agora';
+
   @override
   String get nothingPlayingTitle => 'Ainda não há nada tocando';
 
@@ -787,6 +790,9 @@ class AppLocalizationsPt extends AppLocalizations {
   @override
   String get exploreNewSubtitle => 'Nesta semana';
 
+  @override
+  String get popularNowTitle => 'Populares agora';
+
   @override
   String get offlineBannerTitle => 'Sem conexão';
 

lib/l10n/gen/app_localizations_ru.dart

@@ -749,6 +749,9 @@ class AppLocalizationsRu extends AppLocalizations {
   @override
   String get openFullPlayerTooltip => 'Открыть полный плеер';
 
+  @override
+  String get nowListeningLabel => 'Сейчас слушаете';
+
   @override
   String get nothingPlayingTitle => 'Пока ничего не воспроизводится';
 
@@ -788,6 +791,9 @@ class AppLocalizationsRu extends AppLocalizations {
   @override
   String get exploreNewSubtitle => 'На этой неделе';
 
+  @override
+  String get popularNowTitle => 'Популярно сейчас';
+
   @override
   String get offlineBannerTitle => 'Нет подключения';
 

lib/l10n/gen/app_localizations_zh.dart

@@ -717,6 +717,9 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get openFullPlayerTooltip => '打开完整播放器';
 
+  @override
+  String get nowListeningLabel => '正在收听';
+
   @override
   String get nothingPlayingTitle => '目前没有正在播放的内容';
 
@@ -755,6 +758,9 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get exploreNewSubtitle => '本周';
 
+  @override
+  String get popularNowTitle => '当前热门';
+
   @override
   String get offlineBannerTitle => '无连接';