fix(ci): drop macos-x64 row — Intel runner capacity unusable - #283
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PR #275 shipped the matrix with `macos-13` as the macos-x64 row. In practice, GitHub's Intel-macOS hosted-runner tier is capacity- starved: PR #280's macos-x64 job has been queued 17 hours as of this fix. The row effectively holds every merge-gate open until a runner happens to free up — days, sometimes. Drop the row. macos-arm64 (`macos-latest`) covers the macOS side of the differential. Managed IL is architecture-invariant, so the five remaining rows (linux x64/arm64, windows x64/arm64, macos-arm64) still catch any real cross-OS behaviour drift. If GitHub's macos-13 capacity is ever fixed OR the fleet moves to paid `macos-13-large` runners, add the row back at that point. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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This was referenced Jul 28, 2026
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Drop the
macos-13/macos-x64row fromcross-platform-differential.yaml. PR #280's macos-x64 job has been queued 17 hours (as of this fix) waiting on an available Intel-macOS runner — that row effectively holds every merge-gate open indefinitely.Coverage after
5 rows remain: linux-x64, linux-arm64, windows-x64, windows-arm64, macos-arm64. Managed IL is architecture-invariant, so the arm/x64 pairing across Linux and Windows still catches any real cross-OS behaviour drift.
Follow-up hook
Header comment documents the reason so a future maintainer can add the row back cleanly if GitHub's Intel-macOS capacity ever recovers (or the fleet moves to paid
macos-13-largerunners).Test plan