Xcode Cloud Single-Track CI

When to invoke

• Starting a new Apple-platform project and setting up CI.
• Deciding between GitHub Actions and Xcode Cloud.
• Writing ci_scripts/ci_post_clone.sh / ci_pre_xcodebuild.sh / ci_post_xcodebuild.sh.
• Bumping the Xcode version and handling snapshot baselines.
• User asks "how to split PR / Main / Release workflow", "auto-upload to TestFlight or not".

Default decisions

Single-track on Xcode Cloud

• GitHub Actions is not enabled yet — wait for real pain (PR metadata rules, external lint jobs, Selective Testing, etc.) to appear.
• The repo is hosted on GitHub, but CI runs on Xcode Cloud.

4 workflows