Which channels are caught up (direct channels with allowed users, allowed channels; a new one
starts from now), what posts?since returns at v11.11.0 (changed posts, only those in `order`,
at most 1,000), that a post is recorded before it is acted on, that a failed state write stops
gatewayd, and that "interrupted" is posted on the first connection after a start only.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>