PR #1728's path/mtime-aware get_config() reload broke the common test
idiom monkeypatch.setattr(config, 'cfg', {...}). The cfg = _cfg_cache
alias bound at import time means the rebinding only changes the module
attribute; _cfg_cache stays unchanged, so _cfg_has_in_memory_overrides()
returned False and the path-aware reload silently overwrote the test's
override. test_issue1426_openrouter_* and test_issue1680_codex_* failed
in the full suite while passing standalone — exact polluter signature.
Fix:
- _cfg_has_in_memory_overrides() now also detects cfg-rebind via
cfg is not _cfg_cache.
- get_config() returns cfg (the override) when it differs from
_cfg_cache, so callers see the test's intended override.
- 4 new regression tests pin both prongs in
test_stage302_config_override_regression.py.
Defense-in-depth (prong 2 of test-isolation-flake-recipe):
- test_sprint3.py::test_skills_list and test_skills_list_has_required_fields
now skip on empty skills list rather than asserting > 0 / IndexError, so
future profile-switch / SKILLS_DIR repointing pollutions don't break
the build. The contract under test is 'API returns a non-empty list
when there are entries' — empty list signals a polluter elsewhere.
Pre-existing wall-clock flake fix (absorb-in-release):
- test_issue1144_session_time_sync.py::test_relative_time_uses_server_clock
now pins Date.now() to a fixed instant. Without pinning, when CI runs
near 08:00 UTC the projected server time crosses midnight and '5 minutes
ago' silently becomes '1d'. Same time-of-day-pin pattern as the sibling
test_session_bucket_uses_server_clock used.
Test count: 4580 → 4584 (+4 regression tests). 0 failures, stably green
across multiple runs.
97aa3247e1