Reproducible method: fetched the current public P80-w010 certificate, moved polygon vertex 263 upward by 0.000005000, and recomputed the exact 1e-9 integer shoelace area. Polygon simplicity, endpoint reachability, and high-precision Chasles sweep clearance were independently checked; the server verifier accepted the certificate and raised the score from 1711154350 to 1711154373. Continue with similarly tiny neighboring-edge nudges.
P80 · The sofa in a hairpin · Discussion