Function try_liquidity_math_add 

pub fn try_liquidity_math_add(
    x: u128,
    y: i128,
) -> Result<u128, LiquidityMathError>

Adds a signed liquidity delta to liquidity, returning a structured error on overflow or underflow.

Errors

Returns an error if adding a positive delta wraps past u128::MAX, or if subtracting wraps below zero.