Start here
Quickstart gets the binary running and through the first-boot wizard. Configuration is the full environment reference.
openpreflight
A small CI provider for private repos. One Go binary that configures itself in a web UI and runs your install/test/build on the exact commit, reporting one Check Run with full logs.
Set it up
Register a GitHub App. Only an App can create Check Runs. Then enable repos; the bindings table is the allow-list.
Use it
Understand it
Architecture explains the one-process shape. The decisions record why it gates on the check suite rather than on push.