- seed:plan plans every part of a group's history no range covers (it started below the lowest known range and left a.b.ath's 13 most recent months out); seed_ranges.priority orders leases (seed:plan --priority). - binaries.part_count, kept by the parts insert in the same statement: claimCompleted compares it instead of counting parts every batch. - file_keys: 64-bit hashes of all file keys; FileStore.insert asks it before probing every files partition. - worker:file stores 100 completed binaries per job with set-based queries. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>