task=13_transport_idle_heartbeat
completed_at=2026-05-17
result=PASS

Archived:
- code_review_cloud_G09_0.log
- plan_cloud_G09_0.log
- code_review_cloud_G09_1.log
- plan_cloud_G09_1.log

Summary:
- proto-socket heartbeat wait timer now ignores stale timer firings after a response was already processed and re-arms the normal interval timer.
- legitimate no-response heartbeat timeout semantics remain covered.
- paired idle regression and go-iop node/edge heartbeat invariants are covered.
- reviewer verification passed; Gemini 600s idle log contains no heartbeat_timeout.
