Security improvements and bug fixes.
Demo Mode (no account needed):
1. On the sign-in screen, tap "Try Demo" below the sign-in form
2. Select "Staff" to explore scheduling, clock in/out, messaging, and alerts
3. Select "Manager" to explore job assignment and time entry approval
4. Tap "Exit" in the yellow banner at the top to return to the sign-in screen
No account required — all roles use sample data.