suppression_repo takes a ScriptOwner (app or group), binding the matching
owner column. apply_service load_current / create / prune / suppression_report
all thread owner.as_script_owner(); the validate_bundle_for group-suppress
rejection and the manifest parse guard are dropped — a [group] may now declare
[suppress] to decline a template it inherits from a higher ancestor. No
runtime consumption effect yet (the chain filters land in M1.3/M1.4).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>