Eligibility used package_moves_to_channel, which excludes packages built
natively in the destination — right for ongoing edge -> rc advances (a native
build must not be raced under the same filename) but wrong for the bootstrap,
whose entire purpose is rc == stable. omarchy and omarchy-settings were
therefore left out, so a machine switched to the rc channel could not install
or update the release pair until the first RC was cut. The bootstrap now
requires only destination membership; nothing is built in rc yet, so there is
no native artifact to conflict with. The dev pair stays edge-only and
fast-ring replication is unchanged.