- Guard against overwriting terminal phases (PHASE:done, PHASE:merged)
in on-stop-failure.sh to prevent false failures from same-turn race
- Declare sf_phase_marker explicitly in StopFailure block instead of
relying on phase_marker from PostToolUse block
- Add authentication_failed test (10c) and terminal phase guard tests
(10g, 10h)
- Fix fragile nested command substitution in test 10f fail() message
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
