feat: add internal finance ledger for accounts, claims, and payroll

Keep booked income and expense separate from cash balances, with installments, recurring items, and reports.

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

apps/web/src/views/treasury/treasury-format.ts

@@ -0,0 +1,5 @@
+export function toman(value: string | number | null | undefined) {
+  const n = Number(value ?? 0);
+  if (!Number.isFinite(n)) return '۰';
+  return `${new Intl.NumberFormat('fa-IR').format(Math.round(n))} تومان`;
+}