Packagist (test only): abhi591/php-old-sdk
GitHub: https://github.com/Abhi591/php-old-sdk
Thin shim: same source as packages/vwo-legacy-shim/ (vwo\ extends wingify\). Requires abhi591/php-new-sdk (not wingify/wingify-fme-php-sdk).
Production package: vwo/vwo-fme-php-sdk.
Releases are driven from php-new-sdk via release.json + GitHub Actions.