Motorboy BusOps Platform Admin V1.4.2 — Vatican UI Upgrade

1. Back up the current API directory and database.
2. KEEP your existing config.php, root .htaccess, uploads/ and storage/.
3. Replace api.php with this package's api.php.
4. Replace the admin/ folder with this package's admin/ folder.
5. Optionally run migrations/1.4.2.sql to update installed_version metadata.
6. Hard refresh /admin/ once after upload.
7. Verify /api/v1/health reports version 1.4.2.

Changes:
- Mobile navigation now covers the full screen and has an explicit close button.
- Mobile scrollbars are visually hidden while content remains scrollable.
- Dropdown trigger chevrons removed; custom dropdown menus retained.
- Expanded English/French UI translation; UGC/operator-entered content is not translated.
- New Platform Admins screen can create additional full-privilege Platform Super Admin accounts.
