weights/havengo.onnx — high m50 (~0.901), lower fp pillar (0.884)weights/superbit.onnx — sourced from SuperBitDev/petrol2, higher fp pillar (0.944)0.45 / 0.55 favor SuperBit slightly to push the ensemble
toward fewer false positives. Combined latency ≈ 2.5–3 s p95 (well inside
the 10 s gate).