sayan-oai 0da13c6c99 Track multi-agent mode in world state (#34845)
## Why

Multi-agent mode instructions are durable model context and need to survive
history changes without re-emitting unrelated setup hints.

## What changed

- Add a `multi_agent_mode` world-state section that diffs, retains, and restores
  the effective mode instructions.
- Persist mode changes in world-state snapshots while keeping the legacy
  `TurnContextItem.multi_agent_mode` field for reading older rollouts.
- Keep initial mode instructions after the root-agent usage hint so the active
  mode takes precedence, and bound custom mode text before snapshotting it.

## Testing

- Add snapshot coverage for mode transitions, retained history, and custom-text
  truncation.
- Verify live mode changes preserve instruction ordering, avoid duplicating the
  usage hint, and record both modes in world state.

GitOrigin-RevId: 96b9964d6e5299b07a011c559b68e3d948a49226
2026-07-22 23:57:24 +00:00
2026-04-24 17:49:29 -07:00
2025-04-16 12:56:08 -04:00
2025-04-16 12:56:08 -04:00
2026-04-24 17:49:29 -07:00

Codex CLI is a coding agent from OpenAI that runs locally on your computer.

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This repository is licensed under the Apache-2.0 License.

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