Sep 21, 2026·5 partsBuilding openpreflightFive notes on a small GitHub Checks provider. One Go binary, one SQLite file, no CI platform.01I wanted GitHub Checks without a CI platform3 min read02One Go binary, one SQLite file5 min read03Gate on the commit, not the push5 min read04Running untrusted code on a box you pay for5 min read05The project that checks itself5 min read