Function predict_limit_order_amounts 

pub fn predict_limit_order_amounts(
    side: PredictSide,
    price_per_share_wei: U256,
    quantity_wei: U256,
) -> (U256, U256)

Limit order amount calculator ported from Predict TypeScript SDK logic.

Inputs are 18-decimal wei values:

• price_per_share_wei: price in [0, 1e18]
• quantity_wei: quantity in wei units

BUY:

• makerAmount = quantity * price
• takerAmount = quantity

SELL:

• makerAmount = quantity
• takerAmount = quantity * price