Blink parity: closure-body expansion, operator linebreak, trim-array comma; gate to 0.15% - #141

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-go@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Restore cache failed: Dependencies file is not found in /home/runner/work/ecs-src/ecs-src. Supported file pattern: go.sum

--blink differs on 0.11% of files (5 of 4528), within the 0.15% limit