

CODEX INDEPENDENT VERIFICATION + CLOSE (2026-07-10): Codex re-verified the artifacts himself — RBF sha 9e9c5910
matches board provenance; board FB and fresh zint640 FB share sha256 fd21e43f (cmp clean); replay-color
307200/307200, 0 mismatches, 0 stray. "Call it closed." TWO WORDING CORRECTIONS (precision): hold slack is
exactly 0.000 (met, NOT positive margin); "first-of-its-kind" is a project claim the local evidence cannot
prove — state the verified fact instead: native 640x480 persistent-Z for THIS three-draw strong-reject scene
on silicon, with scanout/texture/writer/depth paths all participating in the proof. NEXT CHAPTER (Codex):
draw-count scaling BEFORE motion — densify toward an SH3 texture cluster while preserving the board-vs-zint
gate.