refactor: update UI components for consistency and dark mode support

- Refactored PaymentsPage, RatingsPage, RepresentationDetailPage, RepresentationsPage, SecretariesPage, SettlementsPage, SmsPage, UserDetailPage, and UsersPage to use consistent class names for styling.
- Updated button styles to use new utility classes for primary, secondary, and danger buttons.
- Enhanced dark mode support across various components by adjusting text and background colors.
- Introduced new utility classes for form inputs, labels, and info rows to standardize styling.
- Implemented Zustand for persistent UI state management, including dark mode toggle functionality.
- Updated CSS to include new styles for skeleton loading and animations.
- Added optional dependencies for improved compatibility with different platforms.

assets/admin/pages/UsersPage.tsx

@@ -44,7 +44,7 @@ export default function UsersPage() {
       key: 'name',
       header: 'نام',
       render: (u) => (
-        <span className="font-medium text-gray-900">
+        <span className="font-medium text-slate-800 dark:text-slate-100">
           {u.name || (u.first_name || u.last_name ? `${u.first_name ?? ''} ${u.last_name ?? ''}`.trim() : '—')}
         </span>
       ),
@@ -58,7 +58,7 @@ export default function UsersPage() {
       key: 'roles',
       header: 'نقش',
       render: (u) => (
-        <span className="text-xs bg-gray-100 text-gray-700 px-2 py-0.5 rounded-full">
+        <span className="text-xs bg-slate-100 dark:bg-slate-700 text-slate-700 dark:text-slate-200 px-2 py-0.5 rounded-full">
           {u.roles.includes('ROLE_ADMIN')
             ? 'ادمین'
             : u.roles.includes('ROLE_DOCTOR')
@@ -89,7 +89,7 @@ export default function UsersPage() {
         breadcrumbs={[{ label: 'داشبورد', to: '/admin/dashboard' }, { label: 'کاربران' }]}
       />
 
-      <div className="bg-white rounded-2xl shadow-sm border border-gray-100 p-6">
+      <div className="cp-card p-6">
         <DataTable<User>
           columns={columns}
           data={items}
@@ -102,21 +102,21 @@ export default function UsersPage() {
             <>
               <button
                 onClick={() => navigate(`/admin/users/${user.uuid}`)}
-                className="p-1.5 text-gray-400 hover:text-blue-600 hover:bg-blue-50 rounded-lg transition-colors"
+                className="cp-action-view"
                 title="مشاهده"
               >
                 <EyeIcon className="w-4 h-4" />
               </button>
               <button
                 onClick={() => navigate(`/admin/users/${user.uuid}?edit=1`)}
-                className="p-1.5 text-gray-400 hover:text-primary-600 hover:bg-primary-50 rounded-lg transition-colors"
+                className="cp-action-edit"
                 title="ویرایش"
               >
                 <PencilIcon className="w-4 h-4" />
               </button>
               <button
                 onClick={() => setDeleteTarget(user)}
-                className="p-1.5 text-gray-400 hover:text-red-600 hover:bg-red-50 rounded-lg transition-colors"
+                className="cp-action-delete"
                 title="حذف"
               >
                 <TrashIcon className="w-4 h-4" />