feat(i18n): add batch group switch text to English, Nepali, and Chinese locales

- Updated the English, Nepali, and Chinese locale files to include a new translation for "Toggle batch switch for {{group}}".
- Enhanced internationalization support for the admin interface by adding relevant strings for improved user experience.

src/lib/money.ts

@@ -33,3 +33,37 @@ export function formatAdminMinorUnits(
     maximumFractionDigits: resolvedDecimalPlaces,
   })}`;
 }
+
+export function formatAdminMinorDecimal(
+  minor: number,
+  currencyCode = "NPR",
+  decimalPlaces?: number,
+): string {
+  const resolvedDecimalPlaces =
+    typeof decimalPlaces === "number" && Number.isFinite(decimalPlaces) && decimalPlaces >= 0
+      ? decimalPlaces
+      : getAdminCurrencyDecimalPlaces(currencyCode);
+  const major = minor / 10 ** resolvedDecimalPlaces;
+  return major.toLocaleString(undefined, {
+    minimumFractionDigits: resolvedDecimalPlaces,
+    maximumFractionDigits: resolvedDecimalPlaces,
+  });
+}
+
+export function parseAdminMajorToMinor(
+  raw: string,
+  currencyCode = "NPR",
+  decimalPlaces?: number,
+): number | null {
+  const resolvedDecimalPlaces =
+    typeof decimalPlaces === "number" && Number.isFinite(decimalPlaces) && decimalPlaces >= 0
+      ? decimalPlaces
+      : getAdminCurrencyDecimalPlaces(currencyCode);
+  const cleaned = raw.replace(/,/g, "").trim();
+  if (!cleaned) return null;
+  const n = Number(cleaned);
+  if (!Number.isFinite(n) || n < 0) return null;
+  const factor = 10 ** resolvedDecimalPlaces;
+  const minor = Math.round(n * factor);
+  return Number.isSafeInteger(minor) ? minor : null;
+}