Continue leftover Hilbert 16(a) degree 8 after the q2 wrap (PR #123, merged as db98cb1). Census lower bound still 2,384. Rank 21 leftover thicken finished 5/5. Ranks 22–26 (15 census triangulations) and the two open (19,3) deep nests remain. Store under compute/q3/. Covering stays frozen. Do not claim a new scheme unless independently replayed and outside the 2,367 plus the seventeen.