pakrym-oai 3b32d861c5 [codex] migrate environment context to model world state (#29249) ...

## Why

Environment context is model-visible state, but it is currently
assembled from transient turn values and diffed through
environment-specific paths. That makes initial injection, turn-to-turn
updates, and changes that happen within a turn use different baselines.

This PR introduces the smallest useful model world-state slice:
environments only, with one in-memory baseline and one renderer for full
state and diffs.

## What changed

- Add a typed `WorldState` container whose sections render fragments
relative to an optional previous value. Full rendering uses the same
diff path with no previous state.
- Replace the parallel `EnvironmentContext` representation with an
`EnvironmentsState` section keyed by environment ID and rendered in
deterministic order.
- Preserve the legacy single-environment output while supporting
multiple environments, starting environments, unavailable tombstones,
and changes to persisted turn-context values.
- Store the latest complete `WorldState` on `ContextManager` and use it
for both turn-boundary and mid-turn environment diffs.
- Build initial and post-compaction context from the same world-state
builder, then retain the rendered state as the next baseline.
- Seed the in-memory baseline from the latest `TurnContextItem` when
resuming an existing rollout; the world state itself is not serialized.
- Keep non-world settings updates on their existing path and merge
rendered world-state fragments at the session consumer.

## Known limitation

A legacy `TurnContextItem` only reconstructs the primary environment as
`local`; it cannot faithfully recover a remote-primary environment ID
after resume. Live state uses the exact environment IDs once a complete
baseline is established.

## Test plan

- `just test -p codex-core world_state`
- `just test -p codex-core record_context_updates`
- `just test -p codex-core deferred_executor_`
- `just test -p codex-core build_initial_context`
- `just test -p codex-core rollout_reconstruction`
- `just test -p codex-core
process_compacted_history_reinjects_full_initial_context`

3b32d861c5 · 2026-06-22 16:07:27 -07:00

History

..

history_tests.rs

[codex] migrate environment context to model world state (#29249)

2026-06-22 16:07:27 -07:00

history.rs

[codex] migrate environment context to model world state (#29249)

2026-06-22 16:07:27 -07:00

mod.rs

[codex] Remove remote compaction failure log (#27106)

2026-06-08 19:23:35 -07:00

normalize.rs

core: rename metadata -> internal_chat_message_metadata_passthrough (#28968)

2026-06-22 11:11:25 -07:00

updates.rs

[codex] migrate environment context to model world state (#29249)

2026-06-22 16:07:27 -07:00