- desktop-update/windows.ps1: the legacy-install retry re-sends the identical request (--force included); the contract test compares both attempts. - test_mint_launchers: the bootstrap imports hermes_cli.venv_sync/steward before prepare_launch can return early for a fixture repo; copy them into the tree. - test_source_build_env: when the pwsh child writes no stamp, fail with the child's stdout/stderr instead of a bare FileNotFoundError (the Windows lane hides the cause).