Sound Notification for Referral Credits with Mute Option

When a user earns $10 in referral credits (after a friend signs up for Venice Pro), it would be great to have a subtle "cha-ching" sound play to confirm the credit has been added to their account. This would provide satisfying feedback and make the referral rewards feel more tangible.

I'd also suggest adding a toggle in settings to mute this sound for users who prefer a silent experience or use the platform in environments where audio notifications aren't appropriate.

This small UX enhancement would make the referral program more engaging and rewarding without being intrusive.