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Prorated amounts in currency minor units: fraction zero padding · case 02

Amounts like 12.05 display as 12.5.

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Case contract

Input {price (signed minor units), currency, num, den}. Exponents: USD 2, EUR 2, JPY 0, KWD 3, CLP 0. Amount = price*num/den rounded half away from zero. Display: zero-exponent currencies show an integer; others show sign, major units, a dot and exactly exponent digits, then a space and the code. Return {minor, display}.

Why this case matters

Prorated amounts must round and render in each currency's own minor-unit precision, including credits.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
regression 0	`{"display": "-0.35 KWD", "minor": -35}`	`{"display": "-0.035 KWD", "minor": -35}`	Failed

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