`pkg_install` in the canonical `script/bootstrap` ran `apt-get install` with no `apt-get update` before it. The Gitea runner image starts with empty package lists, so a repository's own `pkg_install` of anything the image lacks, Go included, failed with "Unable to locate package". The apt branch now refreshes the lists once, before the first install of a run, in the same `$SUDO env DEBIAN_FRONTEND=noninteractive` form, and skips the refresh on later calls. nix, brew and apk are unchanged. Repositories that refresh in their own section, or changed their copy, drop that at their next re-vendor.
Model: opus-5-5