in my ~/bin folder now I have:

codex-code-mode-host -> /Users/aa/os/codex/codex-rs/target/release/codex-code-mode-host

codex -> /Users/aa/os/codex/codex-rs/target/release/codex

and I stopped using the npm codex.

When this branch opens it says:

"OpenAI Codex (c20a2f04)"

where c20a2f04 is the git sha it was compiled on