docs+eval: statewide-parcels parity result (IoU 0.999-1.000, deltas <=0.1% on 8 metro addresses)

feat(exp4): owner-proposed cascade — EoMT primary, incumbent arbitrates sidewalk/earth (LAWN_CASCADE, off by default)

feat(exp4): Phase 1 bake-off — LAWN_MODEL override, EoMT-DINOv3 candidate, findings

feat(eval): labeled before/after eval harness + exp5 green-reclaim results