Redesign IPTV web player interface

[pushpinderbal]

Summary

• replace the sidebar driven layout with responsive top and mobile navigation
• redesign browsing, title details, episode selection, and playback around a compact streaming interface
• keep the player mounted during stream buffering and correct page scrolling and fullscreen behavior
• add animated section and category selection, collapsible category filters, Beam Search, skeleton reveals, and loading spinners
• automatically preload and progressively load movie, series, and live content
• add a multicolor application mark and favicon
• add repository contribution guidance and a GitHub Actions CI and image publishing workflow

Validation

• cd web && bun run build