Almost Heaven strict function audit pass (Thunder-style function normalization, Heaven visual style preserved)

Main changes:
- Added live footer stats for Current Listeners and Visitors Online.
- Fixed visitor ping/footer JS pathing so ping works on public/admin pages.
- Normalized public/admin contact storage and fixed admin Clear All/Delete.
- Normalized request submissions to one JSON request queue read by admin/public.
- Added played status support for requests.
- Fixed join applications delete/clear flow.
- Cleaned chat page logic so live/offline state works reliably.
- Left visual styling/theme intact apart from footer stat cards.
