Devlog 40: Alarm Audio & LocalStorage

Independent Alarm Audio Handling

• new Audio() allowing each finished timer to play independent looping sound effects concurrently.
• Bound alarm termination directly to handleReset() and handleDelete() .

LocalStorage Serialization Fixes

• Sanitized timer state object before serialization in saveTimers() by stripping transient DOM/Audio references (alarmAudio) to prevent JSON stringification crashes.
• Added type validation (typeof alarmAudio.pause === "function") inside stopAlarm() to prevent runtime TypeError issues during state rehydration.

Post-Reload Alarm & Visual Sync

• Updated renderAll() to resume alarm sound playback and background pulse animation for ended timers across page reloads.
• Cleared endTime correctly during timer reset to normalize state lifecycle.

alarm.wav

• Using LMMS to create alarm.wav for the alarming when timer.status==="ended".