# INVESTIGATION.md
Date: 2025-09-21
Feature: Notifications

## ISSUE
Notifications not marking as read when clicked
- Bell count doesn't decrease
- No visual distinction for read/unread
- Backend not updating read status

## EXPECTED BEHAVIOR
1. Click notification → marks as read
2. Notification count decreases
3. Visual change (gray out read items)

## FILES TO CHECK
- app/blueprints/notifications/routes.py
- app/templates/notifications/list.html