Six review findings, one round:
- A selected task-tracker module that fails to load or has no factory refuses boot with tracker-config.
- The expect digest covers the task revision, so archive and unarchive invalidate an old token.
- Position exhaustion and an occupied explicit position refuse task-position-full; no rebalancing yet.
- The store adapter reads roles from the broker's current business document (Broker.taskRoles), so a role added by reload works.
- Only newly requested assignees are checked against live roles; stored ones survive edits, archive and delete.
- Human tasks.create requires a requirement citation (REQ-AREA-N); tasks.edit accepts one.