useFormatters().price() now accepts an optional sourceCurrency param.
When showConversions is enabled and the source differs from the user's
currency, it converts via ECB rates and shows dual format:
"€200.00 (~$218.00)". ItemCard and CollectionView pass priceCurrency
through from API data. Setup detail items also pass priceCurrency.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>