feat(alarmas): surface scheduling failures on the alarm card

Wires EstadoAlarmas.ultimaExcepcionPara into PantallaAlarmas: an
alarm with an outstanding scheduling-failure exception now shows a
calm warning line (distinguishing a pre-notice-only failure from the
alarm itself not being registered) with a tap target into the
reliability diagnostics screen. The warning is its own small tap
target nested inside the existing card InkWell, so tap-to-edit,
swipe-to-delete and the hero "Saltar" chip are untouched.

Adds alarmCardSchedulingFailedMessage/alarmCardPreNoticeFailedMessage
to all 13 ARB locales with real per-language translations (verified
against arb_parity_test and arb_anti_copy_test).

lib/l10n/gen/app_localizations_hi.dart

@@ -1695,6 +1695,14 @@ class AppLocalizationsHi extends AppLocalizations {
   @override
   String get alarmCardVacationPausedBadge => 'छुट्टी के कारण रोका गया';
 
+  @override
+  String get alarmCardSchedulingFailedMessage =>
+      'यह अलार्म सिस्टम में दर्ज नहीं हो सका, इसलिए यह शायद न बजे।';
+
+  @override
+  String get alarmCardPreNoticeFailedMessage =>
+      'यह अलार्म शेड्यूल किया गया है, लेकिन इसकी पूर्व-चेतावनी सेट नहीं हो सकी।';
+
   @override
   String get alarmDiagnosticsExactAlarmsTitle => 'सटीक अलार्म शेड्यूलिंग';