Family 266: computation artifacts and claim scope

Selected review separates the native exactly-three computation, the exact Fourier/mixed certificate and formal at-most-five/cube-fiber statements. Eleven named native package paths are missing in the pinned paper directory. The exact verifier is present with matching checksum; independent arithmetic verifies six literal Gram matrices, but no full moment expansion or MUB bound.

Updated business dossier, reading extent, 35 controls and obligations. Keep specialist integration confidence low; no buyer validation or source proof acceptance. Missing local bytes are a reproduction gap, not a refutation.