Initial commit: FunZone accounting frontend with Sepidar-inspired RTL modules

Co-authored-by: Cursor <cursoragent@cursor.com>

src/utils/format.ts

@@ -0,0 +1,59 @@
+const currencyFormatter = new Intl.NumberFormat('fa-IR', {
+  maximumFractionDigits: 0,
+})
+
+const numberFormatter = new Intl.NumberFormat('fa-IR', {
+  maximumFractionDigits: 2,
+})
+
+const jalaliDateFormatter = new Intl.DateTimeFormat('fa-IR-u-ca-persian', {
+  year: 'numeric',
+  month: '2-digit',
+  day: '2-digit',
+})
+
+const jalaliDateTimeFormatter = new Intl.DateTimeFormat('fa-IR-u-ca-persian', {
+  year: 'numeric',
+  month: '2-digit',
+  day: '2-digit',
+  hour: '2-digit',
+  minute: '2-digit',
+})
+
+/** Formats an amount as Toman with Persian digits and grouping. */
+export function formatMoney(amount: number): string {
+  return currencyFormatter.format(Math.round(amount))
+}
+
+export function formatMoneyWithUnit(amount: number, unit = 'تومان'): string {
+  return `${formatMoney(amount)} ${unit}`
+}
+
+export function formatNumber(value: number): string {
+  return numberFormatter.format(value)
+}
+
+/** Formats an ISO date string to a Jalali (Persian) date. */
+export function formatDate(iso: string): string {
+  const date = new Date(iso)
+  if (Number.isNaN(date.getTime())) return '-'
+  return jalaliDateFormatter.format(date)
+}
+
+export function formatDateTime(iso: string): string {
+  const date = new Date(iso)
+  if (Number.isNaN(date.getTime())) return '-'
+  return jalaliDateTimeFormatter.format(date)
+}
+
+/** Returns today's date as an ISO yyyy-mm-dd string for date inputs. */
+export function todayISO(): string {
+  return new Date().toISOString().slice(0, 10)
+}
+
+const toPersianDigits = (input: string): string =>
+  input.replace(/[0-9]/g, (digit) => '۰۱۲۳۴۵۶۷۸۹'[Number(digit)])
+
+export function toFa(value: string | number): string {
+  return toPersianDigits(String(value))
+}