New `src/lib/utils/currency.ts` is the single source of truth for
display formatting (`formatCurrency`) and the supported-currency
catalog (`SUPPORTED_CURRENCIES`, 10 codes covering the marina market).
New shared components:
- `<CurrencyInput>` — number input with leading symbol prefix and
decimal inputMode, raw number value out via onChange.
- `<CurrencySelect>` — Select dropdown over `SUPPORTED_CURRENCIES`
with symbol + code + label per row, replaces the free-text 3-letter
inputs that let reps type "EURO" or "$$$" into a 3-char ISO column.
Threaded through every money input + display:
- Forms: berth (price/currency), expense (amount/currency), invoice
(currency Select + line-items unit-price + step-3 review totals).
- Reads: berth-card / berth-columns / invoice-card / expense-card /
dashboard KPIs / dashboard revenue-forecast / portal-invoices page.
Each had its own ad-hoc `Intl.NumberFormat` wrapper with slightly
different fallbacks; collapsed onto the shared helper.
`InvoiceLineItems` gained a `currency` prop so the unit-price input
prefix and the subtotal use the parent invoice's currency rather than
hard-coded `en-US` formatting.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Matt
ee2da8f67e