[kriszyp]

📝 Summary

Pins core to the head of Stop workers serving through uWebSockets.js without aborting the process, so Pro's CI runs its cluster and integration suites against that fix before it merges. With the uWS backend on, the restart operation, an immediate shutdown and the termination fallbacks crashed the whole process (SIGABRT or SIGSEGV). That PR has each uWS worker close its own sockets before it stops. Pro has no stop path of its own to change.

When the harper PR merges, this PR is re-pinned to the merged core commit; the automatic Sync Core PR would otherwise carry the same change.

🔧 Changes

• core: submodule pointer from 4f20ed58 (harper main) to 685ec005 (the harper PR's head). No Pro files change.

✅ Verification

• The harper PR carries the tests (4 integration and 10 unit tests, each failing on base). Locally, a 2-node replicated pair built from this pin (HARPER_UWS_UDS=1 plus tls.unixDomainSockets) exited 0 on restart in 6 of 6 runs under traffic, against exit 134 on both nodes before the fix.
• Performance: no per-request cost (see the harper PR).
• PR QA: skipped @ aa4a9db — pointer bump only; the scenario runs on the harper PR (qa-pr-harper-4393-1043e36)

Depends-on: HarperFast/harper#4393

_{🤖 Generated by Claude Code (Claude Opus 5.5); posted via @kriszyp.}

Release target: v5.4 — main ships 5.4; matches the harper PR's milestone, not backported to v5.3 for now

Related PRs: #1410 overlaps, #1395 independent
Complexity: simple

Deferred findings

• 1f019a54f226f3b9 minor test-coverage — core — uws-restart relaunch test teardown may orphan the detached replacement Harper process — NOT FILED
• 1b71b9a286551c4f minor reliability — core — core gitlink pinned to unmerged harper branch; final pin may not descend from main's post-chore: Sync Core #1395 core SHA or include Test that a replica keeps a row written after an expiring row in the same transaction #1410 — NOT FILED

_{Review-Coverage: authored=claude; ran=gemini,cursor-composer,codex,cursor-grok,gemini-carbon; late=cursor-grok:adjudicated,gemini-carbon:adjudicated; adjudicated=domain; declined=muse; rounds=4; full=2 @ aa4a9db}

_{Review-Attention: read ~3m (decisions: cooperative-self-exit-before-terminate, signal-exit-waits-for-uws, do-less-alternative; raised: degraded review) @ aa4a9db}