Record imported refs as part of the import, not as pushes by a deleted user

Refs the forge relays from an import source raise anonymous Artifacts push events.
PushWorkflow now classifies them (repo importing or backfilling) before the proxy
grace sleep and skips the activity, webhook, issue-closing, CI and pull sync steps
for them; the "imported from" entry already covers the import. Secret scanning and
workflow indexing still run. The backfilling flag stays up briefly after the relay
and after a manual re-sync so trailing events are still classified correctly.

taigrrcommitted 6 days agoparent 23ae3dbbbc70af6abbb1af13ed63477e07fb65fdf0726bfBrowse files