newImagePullCommand mirrors newImageRegisterCommand with a positional
<oci-ref> arg, the same kernel-ref / direct-paths flag set + mutual
exclusion, plus --size that parses human-friendly values via
model.ParseSize before crossing the RPC boundary.
Calls "image.pull" RPC, prints the resulting image summary on success.
Long help warns about the Phase A bootability gap (ownership not
preserved; suitable as `image build` base, not yet directly bootable).
CLI test confirms image pull is registered with the expected flags.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Thales Maciel
d5f72dfad9