We present a post-quantum commitment scheme based on kernel-tagged punctured Richelot isogeny walks on superspecial genus-2 Jacobians. The puncturing rule skips every step landing in the product locus, detected by I10 = 0, so honest executions remain in the Jacobian locus and avoid the entry point of known product-locus attacks. Each opening is encoded as a deterministic non-backtracking walk together with a kernel tag recording its action on a small public auxiliary torsion basis. The tag is ve