New:
-Back button on every tab takes you home to Events; notifications moved to the top right
-Organizers can add a custom event logo
-Push notifications can target ticket types like VIP or volunteer

Fixes
-Attendee list now scrolls smoothly, no overlapping names
-Event banners, videos, and links load right away
-QR codes and shared links open the right event after sign-in
-Demo mode no longer opens to a blank screen
-Tab bar stays aligned when tabs are hidden