test_codebase_fingerprint_stat_oserror_raises passed on 3.14 but failed
on CI's 3.11: there Path.is_file() itself calls stat() and re-raises an
OSError without a recognized errno, so the injected error escaped before
the loop reached the guarded path.stat() call. Force is_file() True for
the target (without calling stat) so the explicit fingerprint-time stat()
deterministically raises and hits the except OSError branch on every
Python version. Verified passing on 3.11.11 and 3.14.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017RRCdR4D8SaVrN2xraMQxM
