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## Why This adds the `remote_compaction_v2` client path so remote compaction can run through the normal Responses stream and install a `context_compaction` item that trigger a compaction. The goal is to migrate some of the compaction logic on the client side We keeps the v2 transport behind a feature flag while letting follow-up requests reuse the compacted context instead of falling back to the legacy compaction item shape. ## What changed - add `ResponseItem::ContextCompaction` and refresh the generated app-server / schema / TypeScript fixtures that expose response items on the wire - add `core/src/compact_remote_v2.rs` to send compaction through the standard streamed Responses client, require exactly one `context_compaction` output item, and install that item into compacted history - route manual compact and auto-compaction through the v2 path when `remote_compaction_v2` is enabled, while keeping the existing remote compaction path as the fallback - preserve the new item type across history retention, follow-up request construction, telemetry, rollout persistence, and rollout-trace normalization - add targeted coverage for the feature flag, `context_compaction` serialization, rollout-trace normalization, and remote-compaction follow-up behavior ## Verification - added protocol tests for `context_compaction` serialization/deserialization in `protocol/src/models.rs` - added rollout-trace coverage for `context_compaction` normalization in `rollout-trace/src/reducer/conversation_tests.rs` - added remote compaction integration coverage for v2 follow-up reuse and mixed compaction output streams in `core/tests/suite/compact_remote.rs` --------- Co-authored-by: Codex <noreply@openai.com>
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.