feat(player): sleep timer and delayed start via long-press on play/pause (#270)

Add scheduled pause and resume timers in the player store, cleared on stop
and track changes. Long-press opens a compact preset modal anchored above
the transport row; one-tap presets plus custom minutes. Portaled countdown
badge on the play button; clear the long-press click guard when the modal
closes so the first play/pause click works after scheduling.

src/locales/nl.ts

@@ -1113,6 +1113,24 @@ export const nlTranslation = {
     prev: 'Vorig nummer',
     play: 'Afspelen',
     pause: 'Pauzeren',
+    delayModalTitle: 'Timer',
+    delayPauseSection: 'Pauzeren na',
+    delayStartSection: 'Starten na',
+    delaySchedulePause: 'Pauze plannen',
+    delayScheduleStart: 'Start plannen',
+    delayCancelPause: 'Pauze-timer annuleren',
+    delayCancelStart: 'Start-timer annuleren',
+    delayInactivePause: 'Alleen beschikbaar tijdens afspelen.',
+    delayInactiveStart: 'Alleen in pauze met een geladen nummer of radio.',
+    delayCustomMinutes: 'Aangepaste vertraging (minuten)',
+    delayCustomPlaceholder: 'bijv. 2,5',
+    closeDelayModal: 'Sluiten',
+    delayIn: 'over',
+    delayFmtSec: '{{n}} s',
+    delayFmtMin: '{{n}} min',
+    delayFmtHr: '{{n}} u',
+    delayCancel: 'Annuleren',
+    delayApply: 'Toepassen',
     next: 'Volgend nummer',
     repeat: 'Herhalen',
     repeatOff: 'Uit',