bb0ac5be70
## Summary - move regular-turn context diff/full-context persistence into `run_turn` so pre-turn compaction runs before incoming context updates are recorded - after successful pre-turn compaction, rely on a cleared `reference_context_item` to trigger full context reinjection on the follow-up regular turn (manual `/compact` keeps replacement history summary-only and also clears the baseline) - preserve `<model_switch>` when full context is reinjected, and inject it *before* the rest of the full-context items - scope `reference_context_item` and `previous_model` to regular user turns only so standalone tasks (`/compact`, shell, review, undo) cannot suppress future reinjection or `<model_switch>` behavior - make context-diff persistence + `reference_context_item` updates explicit in the regular-turn path, with clearer docs/comments around the invariant - stop persisting local `/compact` `RolloutItem::TurnContext` snapshots (only regular turns persist `TurnContextItem` now) - simplify resume/fork previous-model/reference-baseline hydration by looking up the last surviving turn context from rollout lifecycle events, including rollback and compaction-crossing handling - remove the legacy fallback that guessed from bare `TurnContext` rollouts without lifecycle events - update compaction/remote-compaction/model-visible snapshots and compact test assertions (including remote compaction mock response shape) ## Why We were persisting incoming context items before spawning the regular turn task, which let pre-turn compaction requests accidentally include incoming context diffs without the new user message. Fixing that exposed follow-on baseline issues around `/compact`, resume/fork, and standalone tasks that could cause duplicate context injection or suppress `<model_switch>` instructions. This PR re-centers the invariants around regular turns: - regular turns persist model-visible context diffs/full reinjection and update the `reference_context_item` - standalone tasks do not advance those regular-turn baselines - compaction clears the baseline when replacement history may have stripped the referenced context diffs ## Follow-ups (TODOs left in code) - `TODO(ccunningham)`: fix rollback/backtracking baseline handling more comprehensively - `TODO(ccunningham)`: include pending incoming context items in pre-turn compaction threshold estimation - `TODO(ccunningham)`: inject updated personality spec alongside `<model_switch>` so some model-switch paths can avoid forced full reinjection - `TODO(ccunningham)`: review task turn lifecycle (`TurnStarted`/`TurnComplete`) behavior and emit task-start context diffs for task types that should have them (excluding `/compact`) ## Validation - `just fmt` - CI should cover the updated compaction/resume/model-visible snapshot expectations and rollout-hydration behavior - I did **not** rerun the full local test suite after the latest resume-lookup / rollout-persistence simplifications |
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codex-protocol
This crate defines the "types" for the protocol used by Codex CLI, which includes both "internal types" for communication between codex-core and codex-tui, as well as "external types" used with codex app-server.
This crate should have minimal dependencies.
Ideally, we should avoid "material business logic" in this crate, as we can always introduce Ext-style traits to add functionality to types in other crates.