Apple shipped the last Intel Mac in June 2023 and Rosetta 2 runs the ARM build natively at 85-100% of native speed. macos-13 runner backlog was also blocking every v0.2.0 retag for ~10 min waiting on a hosted Intel runner — measurable pain for no measurable user reach. If we ever need Intel builds back, the matrix entry is one block of five YAML lines. Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>