Function cublas_bf16_proj_dense_f32_out 

pub fn cublas_bf16_proj_dense_f32_out(
    act: DevicePtr,
    weight_bf16: DevicePtr,
    out: DevicePtr,
    m: u32,
    n: u32,
    k: u32,
    stream: u64,
) -> Result<()>

2026-09-25: cublas_bf16_proj_dense writing an FP32 output buffer, for consumers whose next kernel reads FP32.