Struct HcSiteWeights 

pub struct HcSiteWeights {
    pub hc_fn: DevicePtr,
    pub hc_base: DevicePtr,
    pub hc_scale: DevicePtr,
    pub lowrank: Option<HcLowRank>,
}

2026-09-25: Hyper-connection (mHC) parameters for one site (attention or FFN). The Sinkhorn fields are FP32; with lowrank set they are NULL.

Fields

hc_fn: DevicePtr

2026-09-25: Mix projection fn: [mix_hc, hc_mult*hidden] FP32, where mix_hc = (2 + hc_mult) * hc_mult.

hc_base: DevicePtr

2026-09-25: Mix bias base: [mix_hc] FP32.

hc_scale: DevicePtr

2026-09-25: Mix scale: [3] FP32.

lowrank: Option<HcLowRank>

2026-09-25: Low-rank variant. Some selects the low-rank kernels, and hc_fn/hc_base/hc_scale are then NULL.