pub fn holds(
route: &RuntimeRoute,
pitch: &[Option<(usize, usize)>],
gdn: &[Vec<GdnState>],
) -> Result<bool>Expand description
2026-09-30: Whether route holds for a step whose rows read gdn (per layer, per row).
pitch is each layer’s (h, conv) slot pitch, None for a layer without GDN state.