fix(alarma-sonando): add the schedule pill and restyle the station name

Audit 9.3 (t4 line 415): the ringing screen never showed its schedule
pill. Reuses the alarmScheduleOnce/alarmScheduleWeekdays ARB keys that
already existed with no consumer, plus a new alarmScheduleDaily key
(translated to all 13 locales) for the recurring-alarm case shown in
the prototype.

Audit 9.7 (t4 line 423): the station name was cardTitle (14.5px/w700),
5.5px and 100 weight units under the prototype's 20px/w800.

Audit 9.9 (snooze tiles as number-over-unit) is intentionally NOT
included in this commit: it would require the tile to stop rendering
as a single flat "{minutes} min" Text node, which is exactly what
pantalla_alarma_sonando_dismiss_guard_test.dart taps via
find.text(l10n.alarmSnoozeOptionLabel(N)) in four places. That file
must stay untouched, so this restyle is deferred pending a decision
on how to restructure the tap target safely.

test/pantallas/pantalla_alarma_sonando_test.dart

@@ -11,6 +11,7 @@ import 'package:pluriwave/pantallas/pantalla_alarma_sonando.dart';
 import 'package:pluriwave/servicios/servicio_alarmas.dart';
 import 'package:pluriwave/servicios/servicio_alarmas_android.dart';
 import 'package:pluriwave/servicios/servicio_audio.dart';
+import 'package:pluriwave/tema/pluriwave_tokens.dart';
 import 'package:provider/provider.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
@@ -282,6 +283,63 @@ void main() {
     );
   });
 
+  group('visual fidelity (audit 9.3, proto t4 line 415): pildora de '
+      'programacion', () {
+    testWidgets('alarma diaria: pildora "Cada manana" con icono alarm y acento '
+        'warmCoral', (tester) async {
+      await _montarPantalla(tester); // tipoProgramacion: diaria (fixture)
+
+      final pildora = find.byKey(const ValueKey('ringing-schedule-pill'));
+      expect(pildora, findsOneWidget);
+      expect(
+        find.descendant(
+          of: pildora,
+          matching: find.text(l10n.alarmScheduleDaily),
+        ),
+        findsOneWidget,
+        reason: 'prototype t4 line 415: "CADA MAÑANA"',
+      );
+      expect(
+        find.descendant(of: pildora, matching: find.byIcon(Icons.alarm)),
+        findsOneWidget,
+      );
+
+      final caja = tester.widget<DecoratedBox>(pildora);
+      final decoracion = caja.decoration as BoxDecoration;
+      const acento = PluriWaveTokens.dark;
+      expect(
+        decoracion.color,
+        acento.warmCoral.withValues(alpha: 0.16),
+        reason: 'prototype t4 line 415: rgba(244,184,96,.16)',
+      );
+      expect(
+        decoracion.borderRadius,
+        BorderRadius.circular(999),
+        reason: 'prototype t4 line 415: border-radius:999px (pill)',
+      );
+      expect(
+        (decoracion.border as Border).top.color,
+        acento.warmCoral.withValues(alpha: 0.45),
+        reason: 'prototype t4 line 415: border rgba(244,184,96,.45)',
+      );
+    });
+  });
+
+  group('visual fidelity (audit 9.7, proto t4 line 423): nombre de emisora '
+      '20/w800', () {
+    testWidgets(
+      'el nombre de la emisora es 20px/w800/ls-.3, no cardTitle (14.5/w700)',
+      (tester) async {
+        await _montarPantalla(tester);
+
+        final texto = tester.widget<Text>(find.text('Radio Uno'));
+        expect(texto.style?.fontSize, 20);
+        expect(texto.style?.fontWeight, FontWeight.w800);
+        expect(texto.style?.letterSpacing, -0.3);
+      },
+    );
+  });
+
   group('WU11 — estado estatico de subida de volumen (resolucion 4, sin '
       'contador en vivo)', () {
     testWidgets(