1. Download & install MokoOnyx from Gitea release
2. Copy user files (custom themes, user.css/js) to MokoOnyx
3. Migrate template styles with params
Fallback: if download fails, copy user files only (MokoOnyx must be
installed manually)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Instead of copying/renaming files, the bridge now:
1. Downloads mokoonyx ZIP from Gitea releases
2. Installs via Joomla's Installer (proper extension registration)
3. Migrates template styles and default assignment
4. Falls back gracefully with manual install link if download fails
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Joomla's update system compares hash_file() output (raw hex) against
the <sha256> element value. The sha256: prefix caused mismatch.
Also adds bridge migration helper for future MokoOnyx rename.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
