2026-10-24-codex-subagent-environments-and-idle-wakes-gain-separate-opt-in-controls

Subagent environments and idle wakes gain separate opt-in controls. subagent_thread_environments inherits configured bindings rather than temporary turn attachments and preserves them across eviction. Separately, wake_on_agent_messages can start a new turn in a completed root session; interrupted sessions, Plan mode, and children are excluded. Both flags default off. MessageLifecycleContributor captures publication state and notifies consumption before sampling.

Channel: tagged-release. Half: capability. Date: 2026-10-23.

Operator consequence: Test environment inheritance and post-completion mail as separate contracts before removing reinjection or wake supervisors. Neither opt-in feature establishes recovery from every stalled Goal or every dead host process.

Receipt

• https://github.com/openai/codex/commit/e389b2444c75cbc92d40b2135ca5db300d076979
• https://github.com/openai/codex/commit/8c076942cb70fba8e5c4732c23f1faabc4aed484
• https://github.com/openai/codex/commit/66d0de9983e82b266e89ee29523324c9d08a5472