Charley Cunningham f2d5842ed1 Move previous turn context tracking into ContextManager history (#12179) ...

## Summary
- add `previous_context_item: Option<TurnContextItem>` to
`ContextManager`
- expose session/state accessors for reading and updating the stored
previous context item
- switch settings diffing to use `TurnContextItem` instead of
`TurnContext`
- remove submission-loop local `previous_context` and persist the
previous context item in history

## Testing
- `just fmt`
- `just fix -p codex-core`
- `cargo test -p codex-core --test all model_switching::`
- `cargo test -p codex-core --test all collaboration_instructions::`
- `cargo test -p codex-core --test all personality::`
- `cargo test -p codex-core --test all
permissions_messages::permissions_message_not_added_when_no_change`

2026-02-19 09:56:20 -08:00

..

history_tests.rs

feat: sub-agent injection (#12152)

2026-02-19 11:32:10 +00:00

history.rs

Move previous turn context tracking into ContextManager history (#12179)

2026-02-19 09:56:20 -08:00

mod.rs

Centralize context update diffing logic (#11807)

2026-02-17 09:21:44 -08:00

normalize.rs

Strip unsupported images from prompt history to guard against model switch (#11349)

2026-02-10 11:58:00 -08:00

updates.rs

Move previous turn context tracking into ContextManager history (#12179)

2026-02-19 09:56:20 -08:00