feat: add Settlements, SMS, User detail, and Users management pages

- Implement SettlementsPage for managing settlement requests with approval and rejection functionalities.
- Create SmsPage for handling SMS templates, including creation, approval, rejection, and logging.
- Add UserDetailPage to display detailed information about users.
- Develop UsersPage for listing users with search, view, edit, and delete options.
- Introduce new types for User, SmsTemplate, SmsLog, and Settlement to support the new features.

assets/admin/lib/utils.ts

@@ -0,0 +1,44 @@
+export function formatRial(amount: number): string {
+  return new Intl.NumberFormat('fa-IR').format(amount) + ' تومان';
+}
+
+export function formatNumber(n: number): string {
+  return new Intl.NumberFormat('fa-IR').format(n);
+}
+
+export function formatDate(dateStr: string | null | undefined): string {
+  if (!dateStr) return '—';
+  try {
+    return new Intl.DateTimeFormat('fa-IR', {
+      year: 'numeric',
+      month: '2-digit',
+      day: '2-digit',
+    }).format(new Date(dateStr));
+  } catch {
+    return dateStr;
+  }
+}
+
+export function formatDateTime(dateStr: string | null | undefined): string {
+  if (!dateStr) return '—';
+  try {
+    return new Intl.DateTimeFormat('fa-IR', {
+      year: 'numeric',
+      month: '2-digit',
+      day: '2-digit',
+      hour: '2-digit',
+      minute: '2-digit',
+    }).format(new Date(dateStr));
+  } catch {
+    return dateStr;
+  }
+}
+
+export function maskMobile(mobile: string): string {
+  if (mobile.length < 7) return mobile;
+  return mobile.slice(0, 4) + '***' + mobile.slice(-3);
+}
+
+export function cn(...classes: (string | undefined | null | false)[]): string {
+  return classes.filter(Boolean).join(' ');
+}