- HivePressEntityGroupsTest no longer loads core TMDO_Post_Fields / TMDO_Member_Fields, so it survives core dropping them (PR-020b)
- Pin the 4 groups to their wpdo_registry_meta hashes and the current owner of the 8 shared post keys (documented as existing behaviour, not intent)
- Verify: HP unit 144 OK; mutating one field type fails the hash test
- PR: PR-020a