fix(miniapp): refresh billing state and clean up controls

apps/miniapp/src/lib/dates.ts

@@ -0,0 +1,38 @@
+import type { Locale } from '../i18n'
+
+function localeTag(locale: Locale): string {
+  return locale === 'ru' ? 'ru-RU' : 'en-US'
+}
+
+export function formatFriendlyDate(value: string, locale: Locale): string {
+  const date = new Date(value)
+  if (Number.isNaN(date.getTime())) {
+    return value
+  }
+
+  const includeYear = date.getUTCFullYear() !== new Date().getUTCFullYear()
+
+  return new Intl.DateTimeFormat(localeTag(locale), {
+    month: 'long',
+    day: 'numeric',
+    ...(includeYear ? { year: 'numeric' } : {})
+  }).format(date)
+}
+
+export function formatCyclePeriod(period: string, locale: Locale): string {
+  const [yearValue, monthValue] = period.split('-')
+  const year = Number.parseInt(yearValue ?? '', 10)
+  const month = Number.parseInt(monthValue ?? '', 10)
+
+  if (!Number.isInteger(year) || !Number.isInteger(month) || month < 1 || month > 12) {
+    return period
+  }
+
+  const date = new Date(Date.UTC(year, month - 1, 1))
+  const includeYear = year !== new Date().getUTCFullYear()
+
+  return new Intl.DateTimeFormat(localeTag(locale), {
+    month: 'long',
+    ...(includeYear ? { year: 'numeric' } : {})
+  }).format(date)
+}