e4a586ac08
- Stamped a per-owner delivery generation on each async-result follow-up. - Bumped the generation on session transitions and dropped stale-generation deliveries at format-time and flush-time, closing the job-id-reuse race. - Reverted the fragile persistent-suppression eviction to full row removal. - Covered the reused-id late-delivery contract at the transcript level. Fixes #6828