historical chat now comes from zat.ArchiveBackfill with fetchSeqBounds mapping the session window to plan bounds; the live socket finishes the unsealed tail and the printer dedups the seam by rkey. verified against the 2026-08-03 toni.bsky.team session — which turned out to be a lesson in archive honesty: observed live at 652 messages, the archive replays 48 create_resync rows because the broadcast fell inside stream.waow.tech's dated bootstrap-week capture gap (documented in the example's notes, with the delete-compaction caveat alongside). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>