## Summary - make the plan tool available by default by removing the feature flag and always registering the handler - drop plan-tool CLI and API toggles across the exec, TUI, MCP server, and app server code paths - update tests and configs to reflect the always-on plan tool and guard workspace restriction tests against env leakage ## Testing Manually tested the extension. ------ https://chatgpt.com/codex/tasks/task_i_68f67a3ff2d083209562a773f814c1f9
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.
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.