Publish macOS CLI tarballs in release workflow

[androidshu]

Summary

• Expand .github/workflows/release-cli.yml from Linux-only to a cross-platform CLI release workflow.
• Keep existing Linux assets and add two macOS CLI tarballs on release:
  • CodexBarCLI-v<tag>-macos-arm64.tar.gz
  • CodexBarCLI-v<tag>-macos-x86_64.tar.gz
• Preserve static Swift stdlib packaging for Linux only.
• Update CLI-related docs (README.md, docs/cli.md, docs/releasing-homebrew.md) to reflect the new macOS + Linux CLI asset matrix.

Why

Intel macOS users can run CodexBarCLI, but release assets currently only publish Linux CLI tarballs. Publishing macOS CLI tarballs closes that distribution gap and makes downstream package automation (including Homebrew formula updates) straightforward.

Validation

• ruby -e 'require "yaml"; YAML.load_file(".github/workflows/release-cli.yml")'
• swift build -c release --product CodexBarCLI
• ./.build/release/CodexBarCLI --version

Follow-up

Homebrew tap formula updates are still required to consume the new macOS CLI tarballs.

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 2af428bbee

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[chatgpt-codex-connector]

Install Swift toolchain for macOS matrix entries

Gating setup-swift to Linux means the macOS jobs compile with whatever swift version is preinstalled on the runner, which is not guaranteed to satisfy this repo’s // swift-tools-version: 6.2 requirement. In environments where the default macOS toolchain is older (notably Intel macos-13 images tied to older Xcode), swift build fails before packaging, so the new macOS tarballs are never published. Apply the same Swift version setup (or explicit Xcode selection) to macOS jobs to make release output deterministic.

Useful? React with 👍 / 👎.

[androidshu]

Addressed the Codex review feedback: Swift 6.2.1 setup now runs for macOS jobs as well (not Linux-only), so both macOS matrix entries use an explicit toolchain before build/package.