결재 비활성 안내 개선 및 테이블 기능 보강

lib/features/approvals/template/presentation/controllers/approval_template_controller.dart

@@ -21,6 +21,7 @@ class ApprovalTemplateController extends ChangeNotifier {
   String _query = '';
   ApprovalTemplateStatusFilter _statusFilter = ApprovalTemplateStatusFilter.all;
   String? _errorMessage;
+  int _pageSize = 20;
 
   PaginatedResult<ApprovalTemplate>? get result => _result;
   bool get isLoading => _isLoading;
@@ -28,6 +29,7 @@ class ApprovalTemplateController extends ChangeNotifier {
   String get query => _query;
   ApprovalTemplateStatusFilter get statusFilter => _statusFilter;
   String? get errorMessage => _errorMessage;
+  int get pageSize => _result?.pageSize ?? _pageSize;
 
   Future<void> fetch({int page = 1}) async {
     _isLoading = true;
@@ -42,11 +44,12 @@ class ApprovalTemplateController extends ChangeNotifier {
       };
       final response = await _repository.list(
         page: page,
-        pageSize: _result?.pageSize ?? 20,
+        pageSize: _pageSize,
         query: sanitizedQuery.isEmpty ? null : sanitizedQuery,
         isActive: isActive,
       );
       _result = response;
+      _pageSize = response.pageSize;
     } catch (e) {
       _errorMessage = e.toString();
     } finally {
@@ -160,6 +163,14 @@ class ApprovalTemplateController extends ChangeNotifier {
     notifyListeners();
   }
 
+  void updatePageSize(int value) {
+    if (value <= 0) {
+      return;
+    }
+    _pageSize = value;
+    notifyListeners();
+  }
+
   void _setSubmitting(bool value) {
     _isSubmitting = value;
     notifyListeners();