Underground FX public-side-first rebuild

What this pack focuses on:
- public side first
- home page hero rebuilt around Underground FX artwork
- duplicate filler blocks removed from the home page
- stronger footer restored
- stronger sparkle / cursor trail effects restored site-wide
- HomeTime feature stack kept underneath (news/events/charts/chat/schedule/etc.)
- DJ data left alone

Main files changed:
- index.php
- includes/public_bootstrap.php
- assets/css/ugfx-master.css
- assets/js/ugfx-master.js
- assets/images/ugfx-master-art.png
- assets/images/ugfx-banner-bg.png
- assets/images/ugfx-footer-bid.png
