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…ker (sume#7839) Astra (codex) Mini workers kept "disconnecting": the outer session read the launcher flags quoted in its prompt plus the desk's "you are the main agent unless told otherwise", launched a nested worker via sume-bg-launch, reported "Started …" and exited rc=0. Codex's unified exec had returned the tool call early (status: failed) and killed the tracked child at turn end, so the nested session vanished with no remote-jobs trace; --host mini from the Mini (ssh to itself) made duplicate jobs instead. - agent-human-stream: export SUME_WORKER_SESSION, prepend a "[sume worker session]" preamble to every launched prompt (prompt_head stays original), refuse launches inside a worker session (exit 5; --sessions/--self-test are reads). AGENT_HUMAN_STREAM_WORKER_PREAMBLE=0 / SUME_BG_ALLOW_NESTED=1. - sume-bg-launch: same guard for launches (control plane still allowed). - sume-bg-remote run: export SUME_BG_REMOTE_JOB so the refusal names the Mini job; also commit the live Mini keychain file-store export. - install.sh: append "Sume worker mode (always on)" to ~/.codex/AGENTS.md and ~/.grok/AGENTS.md (Claude Code inherits via the import); check-wiring asserts it. AGENTS.md / SKILL.md: worker exception + prompt hygiene (no launcher flags in the prompt body). docs/MINI-WORKER-HOST.md: the pattern and the guards. - tests: host test 10/11 (guard, control plane, override, job marker) and a wrapper self-test for the preamble + guard; both scrub inherited markers so install.sh works from inside a worker. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Fixes the "Astra Mini workers disconnect" pattern tracked in https://github.com/sumelabs/sume/issues/7839. Do not merge without Chase's confirm (the Mini currently runs this branch from
~/.cstack/src).Root cause
--backend codex --model gpt-6-astra --effort mid,--host mini, "Fresh worker", "Job title: …"), and the deskAGENTS.mdsays "You are the main agent unless told otherwise". Nothing told the Codex worker otherwise, so it read the orchestration skill and launched itself as a nested worker.--host localfrom inside the worker: Codex'sunified_exec_startupreturned the tool call early (status: failed, child banner in stdout), the model reported "Started …", the outer job exited rc=0, and Codex killed the tracked child pid at turn end (nested log's last write 05:36:18, outer end 05:36:19). Noremote-jobs/dir →--status"unknown job".--host minifrom the Mini (ssh to itself) → a duplicate detached job on the same clone while the outer job still exited rc=0.turn.completed.Changes
agent-human-stream.sh:SUME_WORKER_SESSIONexport,[sume worker session]prompt preamble, nested-launch refusal (exit 5).sume-bg-launch.sh: same refusal for launches;--status/--jobs/--attach/--killstill work;SUME_BG_ALLOW_NESTED=1override.sume-bg-remote.sh:SUME_BG_REMOTE_JOBexport (+ the live Mini keychain file-store line that was uncommitted on the Mini).install.sh+sume-desk/worker-mode-snippet.md: "Sume worker mode (always on)" appended to~/.codex/AGENTS.mdand~/.grok/AGENTS.md;check-wiring.shasserts it.AGENTS.md,SKILL.md,docs/MINI-WORKER-HOST.md: worker exception, prompt hygiene, the pattern.sume-bg-launch.test.sh10/11,agent-human-stream.test.py::test_worker_preamble_and_nested_guard.Verification
sume-bg-launch.test.sh: all ok (11 cases).agent-human-stream --self-test: ok.sume-bg-launch --host mini, codex/gpt-6-astra, prompt with the same misleading header): job20260917T055755Z-astra-nest-probestayed attached, sawSUME_WORKER_SESSION/SUME_BG_REMOTE_JOBin its tool shell, both nested launch attempts returned exit 5, finishedPROBE: done,exit_code=0, zero child logs / registry rows. Details on sume#7839.🤖 Generated with Claude Code