Track the dispatched replication-control and confirmation-outcome documentation companion #3333

The maintainer approved and dispatched a documentation companion on October 20 for draft #3084 and draft #3187. It merges after both Harper PRs. The patch was prepared before that handoff.

Track publication and cross-links for the approved companion: super-user-only client replication controls (including zero), trusted programmatic context, replicationUnconfirmed: true, retryable: false, absence of the flag as unknown, the scope of issued local writes, nested rollback handling, and ReplicationConfirmationError/cause migration for programmatic and string consumers. Include the negative retry hint on other explicitly non-retryable REST errors.

The implementation task is already dispatched; this issue records the review follow-up and release linkage. The approved after-both merge order stands.

Review-Deferral: bc5e3e943a0c8a1c severity=minor category=documentation

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