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A running Xcode.app manages ~/Library/Developer/Xcode/UserData/Provisioning Profiles/ and deletes manually-installed (unrecognized) distribution profiles — which is why the App Store profile vanishes. Quit Xcode at the start of the iOS step so the manually-installed 'Punktfunk App Store Distribution' profile survives for manual signing; headless xcodebuild doesn't need the GUI app. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>