[juliusmarminge]

tunnel.test.ts › "replaces a managed server that exited but was not reaped" flaked on main (run) with expected 1 to equal +0 and an empty message.

The fixture builds a zombie with sh -c "sleep 600 & echo $!; exec sleep 600" and kills the child as soon as it reads its pid. If the kill lands before the shell has exec'd into sleep, dash reaps the dead child itself, so no zombie forms and ps -p exits 1 with no output. Running that setup 1,600 times with eight copies in parallel lost the zombie 4 times.

Fix

Before killing the child, wait until ps -o comm= reports the parent as sleep (matched as *sleep for macOS, which prints the full path). With that wait, the same 1,600-run harness produced a zombie every time. The test passed 10 of 10 local runs.

🤖 Generated with Claude Code

[macroscopeapp]

Approvability

Verdict: Approved at 01a59b8

Macroscope's review found this PR approvable — This is a small, localized SSH test-fixture reliability change confined to ignored test paths. It does not modify production behavior, product defaults, or static-analysis configuration.

Notes:

• No code objects were reviewed. Approvability was decided on eligibility alone.

^{You can add or adjust custom eligibility rules. Learn more.}

[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

ℹ️ The exact PR base did not have a successful artifact. Baseline uses the latest successful main measurement shown below.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	5.0 KiB	5.0 KiB	0 B (0.0%)	6.8 KiB	✅
Codex	Thread snapshot wire	3.8 KiB	3.8 KiB	0 B (0.0%)	4.9 KiB	✅
Codex	Live turn WebSocket wire	1.2 KiB	1.2 KiB	0 B (0.0%)	2.0 KiB	✅
Codex	Live turn WebSocket decoded	20.9 KiB	20.9 KiB	0 B (0.0%)	29.3 KiB	✅
Codex	Live turn messages	2	2	0 (0.0%)	8	✅
Claude	Total thread wire	5.0 KiB	5.0 KiB	+7 B (+0.1%)	6.8 KiB	✅
Claude	Thread snapshot wire	3.8 KiB	3.8 KiB	0 B (0.0%)	4.9 KiB	✅
Claude	Live turn WebSocket wire	1.2 KiB	1.2 KiB	+7 B (+0.6%)	2.0 KiB	✅
Claude	Live turn WebSocket decoded	21.2 KiB	21.2 KiB	0 B (0.0%)	29.3 KiB	✅
Claude	Live turn messages	2	2	0 (0.0%)	8	✅

Baseline: 758d773 · PR result: 01a59b8 · Source CI: success

Scenario and decoded snapshot size

10 historical turns, 5 command tools per turn, 878.9 KiB retained MCP result per historical turn, and a 1.05 MiB retained result in the measured turn.

• Codex decoded thread snapshot: 108.5 KiB
• Claude decoded thread snapshot: 108.8 KiB

Updated in place by a trusted workflow. PR artifacts are strictly validated and never executed.