sayan-oai ab80d4d484 core: reconcile legacy WorldState sections (#29997) ...

## Why

Older rollouts can retain model-visible context for a WorldState section
without having a persisted snapshot for that section. Treating the
missing snapshot as definitely absent can duplicate old context or fail
to tell the model that it was replaced or removed.

This provides a generic migration path for sections moving into
WorldState, beginning with AGENTS.md.

Builds on #29810.

## What changed

- distinguish section state that is absent, known from a persisted
snapshot, or unknown because matching legacy context remains in history
- let WorldState sections identify their own legacy fragments while
`ContextManager` owns history reconciliation and baseline persistence
- make AGENTS.md emit one conservative replacement or removal update for
legacy history, then deduplicate from the newly persisted baseline
- preserve existing environment rendering when persisted section data is
missing or malformed

## Testing

- `just test -p codex-core world_state`
- `just test -p codex-core
cold_resume_invalidates_deleted_legacy_agents_md_once -- --exact`

ab80d4d484 · 2026-06-25 07:03:52 +00:00

History

..

common

[codex] Add Ultra reasoning effort (#29899)

2026-06-24 20:13:52 -07:00

remote_env_windows

core: load AGENTS.md from foreign environments (#28958)

2026-06-18 15:06:23 -07:00

suite

core: reconcile legacy WorldState sections (#29997)

2026-06-25 07:03:52 +00:00

all.rs

[codex] Use expect in integration tests (#28441)

2026-06-15 21:53:47 -07:00

responses_headers.rs

feat: use run agent task auth for inference (#19051)

2026-06-24 22:31:41 -07:00