H-116 fresh Shapiro holdouts:
- R20 worst error ~1.1282%
- R40 worst error ~0.5758%
- R80 worst error ~0.2979% (H=4.5) / ~0.2816% (H=7.0)

H-118 high-R confirmation:
- R80 worst Shapiro error 0.2816%
- R120 0.1872%
- R160 0.1217%

No GR-derived amplitude factor was applied to FV timing generation.
