The artifacts/ directory matched a repo-wide ignore rule and was left out of the UI card commit; its suites only passed locally because the files existed on disk. Force-track the complete card so the source push carries every module the tests import. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01BvMSXH8VH2tMWXanb8SJdf