[showcase] kradle-ai fork example

[allan-sqf]

Not meant to be merged

Summary by CodeRabbit

• New Features

  • New three.js rendering backend with panorama mode, VR support, camera shake, improved entity rendering, cursor highlight/break visuals, and follow-camera + /follow command.
  • Replay-by-URL (replayFileUrl) with progress and status reporting.
  • In-world media controls (add/play/pause/seek/volume/speed) and JEI/gui item atlas.
  • Single-file build (minecraft.html) and self-host ZIP artifacts; GitHub Pages publish.

• Improvements

  • App renamed to "Minecraft Web Client"; updated config defaults (proxy, auto-connect), sounds pre-decoded, better filesystem/replay handling, iframe integration, progress overlays.

• Documentation

  • README expanded; CONTRIBUTING clarified.

• Chores

  • New CI workflows and Makefile; updated formatting/ignore rules.