The adapter godfile split moved credential resolution into
agent/anthropic_credentials.py, which silently disarmed two repository
guards still pointed at the old seam:
- tests/conftest.py::_neutralize_macos_keychain_creds patched only the
adapter re-export, so the default suite lost its protection against
reading the operator's real macOS Keychain. Patch the implementation
owner AND the adapter alias.
- test_oauth_setup_token_keeps_inherited_stdin read only the old source
file; it now scans both seams and fails loudly if the call moves again.
- test_hermetic_side_effect_guards isolates the owner module directly.
Regression tests for the salvage follow-up: the interactive 'claude
setup-token' login must keep inherited stdin, and the guard's inline
'noqa: subprocess-stdin' marker must exempt a call.
Teknium