We need to construct the history different when compact happens. For this, we need to just consider the history after compact and convert compact to a response item. This needs to change and use `build_compact_history` when this #3446 is merged.
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 mcp.
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.