## Why
Release CI already builds the Codex entrypoints before staging
artifacts, and the package builder can now package those prebuilt
binaries directly. The workflow should produce package-shaped sidecar
archives from the same staged entrypoints that downstream distribution
channels will eventually consume, without rebuilding `codex` or
`codex-app-server` inside the packaging step.
This intentionally does **not** publish the new package archives as
GitHub Release assets yet. The archives are kept with workflow artifacts
until npm, Homebrew, `install.sh`, winget, and related consumers are
ready to switch over.
## What changed
- Adds a `Build Codex package archive` step to
`.github/workflows/rust-release.yml` after target artifacts are staged.
- Runs `scripts/build_codex_package.py` for both release bundles:
- `primary` builds `codex-package-${TARGET}.tar.gz` with `--variant
codex`.
- `app-server` builds `codex-app-server-package-${TARGET}.tar.gz` with
`--variant codex-app-server`.
- Passes `--entrypoint-bin target/${TARGET}/release/<entrypoint>` so
packages contain the entrypoint already built by the workflow.
- Deletes both package archive names before the final GitHub Release
upload so they remain workflow artifacts only for now.
## Verification
- Parsed `.github/workflows/rust-release.yml` with Ruby's YAML loader.
---
[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with [ReviewStack](https://reviewstack.dev/openai/codex/pull/23582).
* #23596
* __->__ #23582
Michael Bolin