Bug type

Behavior bug (task registry/status incorrect without crash)

Summary

Codex-native subagent tasks can finish their work and write artifacts, but OpenClaw's task registry remains stuck at status=running / stale_running because the Codex-native adapter/task mirror silently misses the completion/status event.

This is distinct from a missing final text payload: in the observed case, the work was done and artifacts existed, but openclaw tasks audit --json continued to report a stale running task. openclaw tasks maintenance did not reconcile it.

Steps to reproduce

1. Start an Atlas/Codex-native subagent through OpenClaw sessions_spawn or an equivalent native Codex subagent flow.
2. Let the subagent complete work that writes durable artifacts.
3. Observe that the child/Codex thread is no longer active and artifacts exist on disk.
4. Run openclaw tasks audit --json and openclaw tasks list --runtime subagent --json.
5. Observe a taskKind=codex-native row still marked running with stale_running, often with lastEventAt near startedAt.

Observed local example:

• taskId=a02e5432-beec-43ad-af9d-ad182cb0f2c4
• runtime: subagent, task kind: codex-native, agent: Atlas / Codex-native
• Artifacts existed: atlas-registry-challenge-v1.md and atlas-registry-proposal-v2.md
• Task registry stayed running for about 36h until manually reconciled.

Expected behavior

When a Codex-native subagent thread completes, OpenClaw should reliably finalize the corresponding task row as succeeded/failed/cancelled and update lastEventAt, endedAt, terminal_outcome, and progress/terminal summaries.

If the completion event is missed, openclaw tasks maintenance should detect stale Codex-native rows and either query/reconcile against the Codex thread status or mark the task lost / needs_reconciliation with a clear diagnostic instead of leaving it silently running.

Actual behavior

• Work completes and artifacts are present.
• The Codex-native task row remains running.
• lastEventAt does not reflect real progress/completion.
• openclaw tasks audit --json reports stale_running.
• openclaw tasks maintenance does not reconcile the row.
• Operator must manually inspect artifacts and update/reconcile the task registry.

Impact

• Long-running agent monitoring becomes unreliable.
• Parent/operator sees stale active work and may wait indefinitely or duplicate work.
• Automation that depends on openclaw tasks audit cannot distinguish a real running task from completed-but-unfinalized Codex-native work.
• Orchestration/lifecycle evidence is weakened because task terminal state no longer matches actual worker state.

Workaround

Current local workaround is watcher-based:

• Run a parent-side progress watcher that checks openclaw tasks audit --json and openclaw tasks list --runtime subagent --status running --json.
• For Atlas/Codex-native tasks, prompt the child to write progress/completion checkpoints to a known durable file path or ticket artifact.
• If the progress/artifact file shows completion while the task registry remains running, manually reconcile after verifying artifacts.

Related issues

• Related but distinct: [Bug]: Subagent sessions_spawn returns empty result to parent despite valid child output #82233 tracks subagent result/announce payload loss and was closed as duplicate of Subagent completion event sometimes drops result payload and/or token stats (3 repros, intermittent) #75196.
• Related canonical result-payload issue: Subagent completion event sometimes drops result payload and/or token stats (3 repros, intermittent) #75196.
• This issue is specifically about Codex-native task registry status mirroring/reconciliation: completed work remains stale_running.