As I checked with Valene, browser notifications do not work properly in Incognito (private) windows on Chromium-based browsers due to browser restrictions.

I would like to request an in-app notification system with a sound alert as an alternative to browser notifications. This would allow users to receive notifications even when using Incognito (private) windows.

As an example, Gleap (app.gleap.io) implements this by playing a sound alert whenever a new ticket is received. This works reliably even in Incognito (private) windows and could serve as a good reference for a similar implementation.