Updated audio playback and preloading logic to check for and handle returned promises from play() and load() methods. This prevents uncaught promise rejections in browsers where these methods may return undefined, improving reliability and error handling for notification sounds.
Replaced all references to notification.mp3 with hohoho.mp3 in notification-related components and context. Added hohoho.mp3 to the public directory. Introduced a script (download-notification-sound.js) for downloading notification sounds from YouTube using @distube/ytdl-core, which was added as a devDependency. Also added yt-dlp.exe for alternative audio downloading.
