multi-agent-mux/.agents/reports/planner-reviewer-codex-01/report-24b21b9c.md

PR #51 round 2 delta review — Codex

Job: 24b21b9c Loop: loop-20261007T162612Z-9fe4f9 Base: 518bedac5d Head: 4c86107846 Tree: e6f67f6136 Validation path: /var/folders/q_/68sxgw3j073dgjg8wl9s08vw0000gn/T/mam-review/loop-20261007T162612Z-9fe4f9/1

Conclusion

R1 is closed on code inspection and deterministic execution. No new code defect was found in the two-file delta. Overall approval is withheld solely because the required two-file suite could not execute its test bodies under this session's network restrictions. This is a validation/environment blocker, not a request to change the implementation. Run the required suite in a permitted isolated environment before promoting this review to PASS; no design escalation is needed.

R1 closure table

Item	Evidence	Result
1-second wait after a 10-second backward wall-clock step	wrapper.py:150,153; independent base/head comparison: 11.0 seconds -> 1.0 second	Closed
3-second wait after the same step	wrapper.py:150,153; independent base/head comparison: 13.0 seconds -> 3.0 seconds	Closed
Broker re-observation consumes the corrected wait	wrapper.py:211; finalize_end with completion appearing during the wait: base 13.0 seconds, head 3.0 seconds, both return completed	Closed
Heartbeat grace consumes the corrected wait	wrapper.py:239; finalize_end with completion appearing during the wait: base 11.0 seconds, head 1.0 second, both return completed	Closed
Owner polling retained	wrapper.py:152,156; injected owner loss observes checks at elapsed 0.0, 0.5, 1.0 seconds and raises OwnerGone at 1.0	Preserved
Deadline retains wall-clock policy	wrapper.py:203,226,240; forward wall-clock jump during the 1-second grace produces wall_clock_timeout at elapsed 1.0 second	Preserved

File references above are relative to .agents/skills/lib_py/delegation/ in the validation tree.

Scope and test quality

Only .agents/skills/lib_py/delegation/wrapper.py and tests/test_issue17_item4_decisions.py changed (43 insertions, 3 deletions). Production changes are restricted to the _sleep docstring and its two clock reads. _now, heartbeat timestamp age, evidence windows, START_TIME + TIMEOUT, subprocess/registry/event handling, and surrounding branch logic are unchanged.

The regression tests at tests/test_issue17_item4_decisions.py:598-630 use separate simulated wall and monotonic clocks, step wall time backward once, and advance in deterministic half-second increments. They perform no real sleep or clock adjustment. Both 1- and 3-second cases distinguish the faulty base from the fixed head decisively. The extra owner/deadline probes cover behavior not asserted by these two new tests.

Previous nonblocking follow-ups and the unrelated main-branch restore failure were not reopened.

Validation results

• Required suite attempted with Python 3.9 from /Users/godopu16/PuKi/laa/canary_projects/multi-agent-mux-wt/pr-51/.venv/bin/python, PYTHONDONTWRITEBYTECODE=1, pytest cache disabled, and external basetemp /tmp/24b21b9c-selected.
• Targets: tests/test_issue17_item4_decisions.py tests/test_issue33_budget.py.
• Result: 278 setup errors in 1.80s, exit 1; no passing test-body claim is made for this run. Every case is blocked by the session-autouse local MQTT fixture: tests/conftest.py:1575 calls start_broker, then tests/_local_mqtt.py:90 fails at self._lsock.bind(("127.0.0.1", 0)) with PermissionError: [Errno 1] Operation not permitted.
• Required-suite log: /tmp/24b21b9c-selected.log.
• Separate network-free run: python -m pytest --noconftest -p no:cacheprovider -q --basetemp=/tmp/24b21b9c-unit-tests tests/test_issue17_item4_decisions.py::test_u_a_wait_is_not_stretched_by_a_wall_clock_step_back -> 2 passed in 0.08s. This deliberately excludes the broker autouse fixture and is supplementary evidence, not a substitute claim for the required suite.
• Independent probe script /tmp/24b21b9c-probes.py: all assertions passed for base/head sleep, both finalize paths, forward wall-clock expiry, and owner polling. Actual system time was never changed; side effects and disk reads were stubbed for finalize probes.
• Both changed Python files passed AST parsing; git diff --check BASE HEAD passed.
• HEAD/tree matched the brief before and after validation; final git status --porcelain was empty.

Reproduction and resolution of the validation blocker

Use the brief's required two-file pytest command in this restricted session. Expected: the isolated local broker starts and the 278 test bodies execute. Actual: binding the local TCP listener is denied before any test body runs. Resolution: rerun the same suite in an environment that permits its isolated loopback broker; do not modify product code, suppress the integration fixture, or classify setup errors as passing tests.

Isolation and lifecycle

Before tests and probes, inherited HERDR_, MAM_, MQTT_, SKS_ and control-plane binding variables were removed; temporary HOME, HOME_DIR, WORKSPACE_ROOT, XDG_CONFIG_HOME and absent MAM_ENV_FILE were supplied. The required-suite harness additionally set WORKSPACE_ROOT to each test's tmp_path via an environment-only autouse plugin, so sourcing helpers cannot generate a shim in the review snapshot or another workspace. No .mam.env was exported, no live herdr server was used, and no source files, branches or commits were changed. Only the requested report and lifecycle publisher used this job's real control-plane paths.

The requested started command was attempted first, but MQTT publication exhausted three attempts and exited 2 with Operation not permitted. The requested completed command was also executed after saving this report; all three MQTT attempts failed with Operation not permitted and the command exited 2. The report is saved, but neither lifecycle event was successfully delivered to the broker.

[VERDICT: NOT PASS]