계정 정보 다이얼로그 추가 및 전체 목록 페치 개선

lib/features/masters/group/presentation/controllers/group_controller.dart

@@ -54,6 +54,17 @@ class GroupController extends ChangeNotifier {
     _errorMessage = null;
     notifyListeners();
     try {
+      final previous = _result;
+      final int resolvedPage;
+      if (page < 1) {
+        resolvedPage = 1;
+      } else if (previous != null && previous.pageSize > 0) {
+        final calculated = (previous.total / previous.pageSize).ceil();
+        final maxPage = calculated < 1 ? 1 : calculated;
+        resolvedPage = page > maxPage ? maxPage : page;
+      } else {
+        resolvedPage = page;
+      }
       final isDefault = switch (_defaultFilter) {
         GroupDefaultFilter.all => null,
         GroupDefaultFilter.defaultOnly => true,
@@ -65,7 +76,7 @@ class GroupController extends ChangeNotifier {
         GroupStatusFilter.inactiveOnly => false,
       };
       final response = await _repository.list(
-        page: page,
+        page: resolvedPage,
         pageSize: _result?.pageSize ?? 20,
         query: _query.isEmpty ? null : _query,
         isDefault: isDefault,

lib/features/masters/group/presentation/pages/group_page.dart

@@ -100,9 +100,10 @@ class _GroupEnabledPageState extends State<_GroupEnabledPage> {
     final error = _controller.errorMessage;
     if (error != null && error != _lastError && mounted) {
       _lastError = error;
-      ScaffoldMessenger.of(
-        context,
-      ).showSnackBar(SnackBar(content: Text(error)));
+      final messenger = ScaffoldMessenger.maybeOf(context);
+      if (messenger != null) {
+        messenger.showSnackBar(SnackBar(content: Text(error)));
+      }
       _controller.clearError();
     }
   }
@@ -129,7 +130,7 @@ class _GroupEnabledPageState extends State<_GroupEnabledPage> {
         final currentPage = result?.page ?? 1;
         final totalPages = result == null || result.pageSize == 0
             ? 1
-            : (result.total / result.pageSize).ceil().clamp(1, 9999);
+            : (result.total / result.pageSize).ceil().clamp(1, 9999) as int;
         final hasNext = result == null
             ? false
             : (result.page * result.pageSize) < result.total;
@@ -253,6 +254,14 @@ class _GroupEnabledPageState extends State<_GroupEnabledPage> {
                 ),
                 Row(
                   children: [
+                    ShadButton.outline(
+                      size: ShadButtonSize.sm,
+                      onPressed: _controller.isLoading || currentPage <= 1
+                          ? null
+                          : () => _controller.fetch(page: 1),
+                      child: const Text('처음'),
+                    ),
+                    const SizedBox(width: 8),
                     ShadButton.outline(
                       size: ShadButtonSize.sm,
                       onPressed: _controller.isLoading || currentPage <= 1
@@ -268,6 +277,15 @@ class _GroupEnabledPageState extends State<_GroupEnabledPage> {
                           : () => _controller.fetch(page: currentPage + 1),
                       child: const Text('다음'),
                     ),
+                    const SizedBox(width: 8),
+                    ShadButton.outline(
+                      size: ShadButtonSize.sm,
+                      onPressed:
+                          _controller.isLoading || currentPage >= totalPages
+                              ? null
+                              : () => _controller.fetch(page: totalPages),
+                      child: const Text('마지막'),
+                    ),
                   ],
                 ),
               ],
@@ -367,7 +385,10 @@ class _GroupEnabledPageState extends State<_GroupEnabledPage> {
               return ShadButton.ghost(
                 onPressed: isSaving
                     ? null
-                    : () => Navigator.of(dialogContext).pop(),
+                    : () => Navigator.of(
+                          dialogContext,
+                          rootNavigator: true,
+                        ).pop(),
                 child: const Text('취소'),
               );
             },
@@ -397,7 +418,10 @@ class _GroupEnabledPageState extends State<_GroupEnabledPage> {
                           isActive: isActiveNotifier.value,
                           note: note.isEmpty ? null : note,
                         );
-                        final navigator = Navigator.of(dialogContext);
+                      final navigator = Navigator.of(
+                        dialogContext,
+                        rootNavigator: true,
+                      );
                         final response = isEdit
                             ? await _controller.update(groupId!, input)
                             : await _controller.create(input);
@@ -553,11 +577,17 @@ class _GroupEnabledPageState extends State<_GroupEnabledPage> {
           content: Text('"${group.groupName}" 그룹을 삭제하시겠습니까?'),
           actions: [
             TextButton(
-              onPressed: () => Navigator.of(dialogContext).pop(false),
+            onPressed: () => Navigator.of(
+                  dialogContext,
+                  rootNavigator: true,
+                ).pop(false),
               child: const Text('취소'),
             ),
             TextButton(
-              onPressed: () => Navigator.of(dialogContext).pop(true),
+            onPressed: () => Navigator.of(
+                  dialogContext,
+                  rootNavigator: true,
+                ).pop(true),
               child: const Text('삭제'),
             ),
           ],
@@ -582,10 +612,14 @@ class _GroupEnabledPageState extends State<_GroupEnabledPage> {
   }
 
   void _showSnack(String message) {
-    if (!mounted) return;
-    ScaffoldMessenger.of(
-      context,
-    ).showSnackBar(SnackBar(content: Text(message)));
+    if (!mounted) {
+      return;
+    }
+    final messenger = ScaffoldMessenger.maybeOf(context);
+    if (messenger == null) {
+      return;
+    }
+    messenger.showSnackBar(SnackBar(content: Text(message)));
   }
 
   String _formatDateTime(DateTime? value) {