Implement a notification system that alerts users when someone requests to send them a private message. This will improve the chat experience by ensuring message requests are not overlooked.
## Context When a user requests to send a private message to another user, the recipient has no visible indication that a message request is pending. ## Problem No notification appears when someone asks to send you a message. As a result, message requests can go unnoticed and remain unopened for a long time, degrading the chat experience. ## Expected behavior - A clear notification (e.g. badge, toast, or in-app alert) should appear when someone requests to send you a message. - The user should be able to discover and respond to message requests in a timely manner. ## Steps to reproduce 1. User A requests to send a message to User B. 2. Observe User B's client. 3. No notification is shown for the pending message request. ## Additional info Improves discoverability of private message requests and reduces missed conversations.