sf-build-deploy-package-src-prefix-breaks-metadata-api

The sf_build_deploy_package tool was writing zip entries under a src/ prefix (SFDX convention). Salesforce Metadata API requires package.xml at zip root with no prefix (e.g. classes/MyClass.cls, not src/classes/MyClass.cls). Deploying a src/-prefixed zip returns ‘No package.xml found’ even though the file exists inside the zip.