Stamps users.email_verified_at = now on insert for the four shared
test fixtures (admin/pro/teamadmin/engineer @resolutionflow.example.com),
and backfills existing rows on re-run when the column is null. Without
this, fixtures get walled by require_verified_email_after_grace once
their created_at ages past 7 days.
Re-run with: docker exec resolutionflow_backend python -m scripts.seed_test_users
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
