Owen Lin
0d8b2b74c4
This PR adds a dedicated `turn/steer` API for appending user input to an in-flight turn. ## Motivation Currently, steering in the app is implemented by just calling `turn/start` while a turn is running. This has some really weird quirks: - Client gets back a new `turn.id`, even though streamed events/approvals remained tied to the original active turn ID. - All the various turn-level override params on `turn/start` do not apply to the "steer", and would only apply to the next real turn. - There can also be a race condition where the client thinks the turn is active but the server has already completed it, so there might be bugs if the client has baked in some client-specific behavior thinking it's a steer when in fact the server kicked off a new turn. This is particularly possible when running a client against a remote app-server. Having a dedicated `turn/steer` API eliminates all those quirks. `turn/steer` behavior: - Requires an active turn on threadId. Returns a JSON-RPC error if there is no active turn. - If expectedTurnId is provided, it must match the active turn (more useful when connecting to a remote app-server). - Does not emit `turn/started`. - Does not accept turn overrides (`cwd`, `model`, `sandbox`, etc.) or `outputSchema` to accurately reflect that these are not applied when steering.
codex-core
This crate implements the business logic for Codex. It is designed to be used by the various Codex UIs written in Rust.
Dependencies
Note that codex-core makes some assumptions about certain helper utilities being available in the environment. Currently, this support matrix is:
macOS
Expects /usr/bin/sandbox-exec to be present.
When using the workspace-write sandbox policy, the Seatbelt profile allows
writes under the configured writable roots while keeping .git (directory or
pointer file), the resolved gitdir: target, and .codex read-only.
Linux
Expects the binary containing codex-core to run the equivalent of codex sandbox linux (legacy alias: codex debug landlock) when arg0 is codex-linux-sandbox. See the codex-arg0 crate for details.
All Platforms
Expects the binary containing codex-core to simulate the virtual apply_patch CLI when arg1 is --codex-run-as-apply-patch. See the codex-arg0 crate for details.