- Add tar.xz archive support using Borg's compress package
- ArchiveXZ() and ArchiveWithFormat() for configurable compression
- Better compression ratio than gzip for release artifacts
- Consolidate 12 installer scripts into 2 unified scripts
- install.sh and install.bat with BunnyCDN edge variable support
- Subdomains: setup.core.help, ci.core.help, dev.core.help, etc.
- MODE and VARIANT transformed at edge based on subdomain
- Installers prefer tar.xz with automatic fallback to tar.gz
- Fixed CodeRabbit issues: HTTP status patterns, tar error handling,
verify_install params, VARIANT validation, CI PATH persistence
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>