koru/github — implementation companion. The `koruc <site> release | publish-npm | ci` commands are floated here: a site that imports koru/github gets these verbs on the compiler, so the release path is Koru-owned. This deliberately mirrors koru/vercel's index.kz: the config is read from the AST (source of truth), and the side effects shell out to the platform CLIs (`gh`, `npm`, and the `std/build:step` graph for `ci`). No CLI-passed data for the common case — argv extras are a convenience, not the spine.