Issue 24322 runtime reproduction on fs-08 Ubuntu, main dd5b5401e1, Codex CLI 0.163.0, GPT-6.1-Sol low, real Chromium web app at 1280x800.
Attempt 1: empty isolated worktree database, three sequential terminal commands.
Attempt 2: four overlapping sessions, each running sleep 15 + printf, then a separate printf.
Filtered native provider command-completion events (only probe data):
{"received": "2026-10-26T21:24:48.491Z", "thread": "01a17a19-f59c-7bd0-8c05-3cc7c35be596", "command": "/bin/bash -lc \"printf 'issue-24322-probe-1\\\\n'\"", "exitCode": 0, "output": "issue-24322-probe-1\n"}
{"received": "2026-10-26T21:24:51.624Z", "thread": "01a17a19-f59c-7bd0-8c05-3cc7c35be596", "command": "/bin/bash -lc \"printf 'issue-24322-probe-2\\\\n'\"", "exitCode": 0, "output": "issue-24322-probe-2\n"}
{"received": "2026-10-26T21:24:55.578Z", "thread": "01a17a19-f59c-7bd0-8c05-3cc7c35be596", "command": "/bin/bash -lc \"printf 'issue-24322-probe-3\\\\n'\"", "exitCode": 0, "output": "issue-24322-probe-3\n"}
{"received": "2026-10-26T21:25:32.306Z", "thread": "01a17a1a-8d4b-72e2-a9b2-260b0adbd731", "command": "/bin/bash -lc \"printf 'second-1\\\\n'\"", "exitCode": 0, "output": "second-1\n"}
{"received": "2026-10-26T21:25:32.822Z", "thread": "01a17a1a-95a1-7573-a3ce-d0b21d2eda8c", "command": "/bin/bash -lc \"printf 'second-2\\\\n'\"", "exitCode": 0, "output": "second-2\n"}
{"received": "2026-10-26T21:25:37.361Z", "thread": "01a17a1a-a455-7ad0-905b-8cc1c9a68074", "command": "/bin/bash -lc \"printf 'second-4\\\\n'\"", "exitCode": 0, "output": "second-4\n"}
{"received": "2026-10-26T21:25:42.476Z", "thread": "01a17a1a-8d4b-72e2-a9b2-260b0adbd731", "command": "/bin/bash -lc \"sleep 15; printf 'concurrent-1\\\\n'\"", "exitCode": 0, "output": "concurrent-1\n"}
{"received": "2026-10-26T21:25:43.987Z", "thread": "01a17a1a-95a1-7573-a3ce-d0b21d2eda8c", "command": "/bin/bash -lc \"sleep 15; printf 'concurrent-2\\\\n'\"", "exitCode": 0, "output": "concurrent-2\n"}
{"received": "2026-10-26T21:25:48.696Z", "thread": "01a17a1a-9d3f-7452-803c-971efabb9280", "command": "/bin/bash -lc \"sleep 15; printf 'concurrent-3\\\\n'\"", "exitCode": 0, "output": "concurrent-3\n"}
{"received": "2026-10-26T21:25:48.812Z", "thread": "01a17a1a-a455-7ad0-905b-8cc1c9a68074", "command": "/bin/bash -lc \"sleep 15; printf 'concurrent-4\\\\n'\"", "exitCode": 0, "output": "concurrent-4\n"}
{"received": "2026-10-26T21:25:50.918Z", "thread": "01a17a1a-9d3f-7452-803c-971efabb9280", "command": "/bin/bash -lc \"printf 'second-3\\\\n'\"", "exitCode": 0, "output": "second-3\n"}

Attempt 3 setup: stopped dev server; ran vp run migrate-dev-db. Read-only source snapshot compacted to 38.2 MB; retained 25 stopped threads and 4580 events. Source contained migration ids 70-72 not on current main; helper skipped existing ids and completed successfully.
{"received": "2026-10-26T21:27:54.581Z", "command": "/bin/bash -lc \"printf 'populated-state-24322\\\\n'\"", "exitCode": 0, "output": "populated-state-24322\n"}
Result: all 12 terminal commands exited 0; no code-mode host negotiation timeout. No long-lived app-server backlog was induced.