Function adjustment_display 

pub fn adjustment_display(
    drop_yd: f64,
    range_yd: f64,
    unit: AdjustmentUnit,
    click: Option<ClickValue>,
    bias_mil: f64,
    cf: f64,
) -> AdjustmentDisplay

The one boundary where zero-set bias, tracking CF, and click quantization compose — the order is load-bearing (see main.rs’s zero_set_bias_applies_before_the_cf_division and clicks_arm_order_of_operations_is_load_bearing tests) and must not move.