- Replaced ps5-payload-manager with ps5-unified-autoloader (which
  internally handles autoload.txt parsing and payload manager fallback).
- Simplified Autoloader.java to just load the unified autoloader ELF
  from disc root.
- Removed AutoloadConfigParser.java and JarExecutor.java.
- Updated build_iso.sh, download_deps.sh, and CI workflows.
- Bumped version to v1.4.0.