feat(approvals): 결재 상세 전표 연동과 스코프 권한 매핑 확장

- 결재 상세 다이얼로그에 전표 요약·라인·고객 섹션을 추가하고 현재 사용자 단계 강조 및 비고 입력 검증을 개선함

- 대시보드·결재 목록에서 전표 리포지토리와 AuthService를 주입해 상세 진입과 결재 관리 이동 버튼을 제공함

- StockTransactionApprovalInput이 template/steps를 config 노드로 직렬화하도록 변경하고 통합 테스트를 갱신함

- scope 권한 문자열을 리소스권으로 변환하는 PermissionScopeMapper와 단위 테스트를 추가하고 AuthPermission을 연동함

- 재고 메뉴 정렬, 상세 컨트롤러 오류 리셋, 요청자 자동완성 상태 동기화 등 주변 UI 버그를 수정하고 테스트를 보강함

lib/features/approvals/presentation/pages/approval_page.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 
 import 'package:flutter/material.dart';
+import 'package:flutter/scheduler.dart';
 import 'package:get_it/get_it.dart';
 import 'package:go_router/go_router.dart';
 import 'package:intl/intl.dart' as intl;
@@ -18,6 +19,7 @@ import '../../../../widgets/components/superport_dialog.dart';
 import '../../../../widgets/components/superport_table.dart';
 import '../../../../widgets/components/superport_pagination_controls.dart';
 import '../../../../widgets/components/feature_disabled_placeholder.dart';
+import '../../../auth/application/auth_service.dart';
 import '../../domain/entities/approval.dart';
 import '../../domain/repositories/approval_repository.dart';
 import '../../domain/repositories/approval_template_repository.dart';
@@ -26,6 +28,7 @@ import '../../domain/usecases/list_approval_drafts_use_case.dart';
 import '../../domain/usecases/save_approval_draft_use_case.dart';
 import '../../../inventory/lookups/domain/repositories/inventory_lookup_repository.dart';
 import '../../../inventory/shared/widgets/employee_autocomplete_field.dart';
+import '../../../inventory/transactions/domain/repositories/stock_transaction_repository.dart';
 import '../controllers/approval_controller.dart';
 import '../dialogs/approval_detail_dialog.dart';
 
@@ -100,6 +103,7 @@ class _ApprovalEnabledPageState extends State<_ApprovalEnabledPage> {
     _controller = ApprovalController(
       approvalRepository: GetIt.I<ApprovalRepository>(),
       templateRepository: GetIt.I<ApprovalTemplateRepository>(),
+      transactionRepository: GetIt.I<StockTransactionRepository>(),
       lookupRepository: GetIt.I.isRegistered<InventoryLookupRepository>()
           ? GetIt.I<InventoryLookupRepository>()
           : null,
@@ -229,6 +233,9 @@ class _ApprovalEnabledPageState extends State<_ApprovalEnabledPage> {
       _approvalsResourcePath,
       PermissionAction.edit,
     );
+    final currentUserId = GetIt.I.isRegistered<AuthService>()
+        ? GetIt.I<AuthService>().session?.user.id
+        : null;
 
     await showApprovalDetailDialog(
       context: context,
@@ -236,6 +243,7 @@ class _ApprovalEnabledPageState extends State<_ApprovalEnabledPage> {
       dateFormat: _dateTimeFormat,
       canPerformStepActions: canPerformStepActions,
       canApplyTemplate: canApplyTemplate,
+      currentUserId: currentUserId,
     );
 
     if (!mounted) {
@@ -245,6 +253,31 @@ class _ApprovalEnabledPageState extends State<_ApprovalEnabledPage> {
     _controller.clearSelection();
   }
 
+  void _handleRequesterFieldChanged() {
+    void updateSelection() {
+      final selectedLabel = _selectedRequester == null
+          ? ''
+          : '${_selectedRequester!.name} (${_selectedRequester!.employeeNo})';
+      if (_requesterController.text.trim() != selectedLabel) {
+        _selectedRequester = null;
+      }
+    }
+
+    if (!mounted) {
+      return;
+    }
+    final phase = SchedulerBinding.instance.schedulerPhase;
+    if (phase == SchedulerPhase.persistentCallbacks ||
+        phase == SchedulerPhase.transientCallbacks) {
+      WidgetsBinding.instance.addPostFrameCallback((_) {
+        if (!mounted) return;
+        setState(updateSelection);
+      });
+      return;
+    }
+    setState(updateSelection);
+  }
+
   @override
   void dispose() {
     _controller.removeListener(_handleControllerUpdate);
@@ -323,16 +356,7 @@ class _ApprovalEnabledPageState extends State<_ApprovalEnabledPage> {
                   onSuggestionSelected: (suggestion) {
                     setState(() => _selectedRequester = suggestion);
                   },
-                  onChanged: () {
-                    setState(() {
-                      final selectedLabel = _selectedRequester == null
-                          ? ''
-                          : '${_selectedRequester!.name} (${_selectedRequester!.employeeNo})';
-                      if (_requesterController.text.trim() != selectedLabel) {
-                        _selectedRequester = null;
-                      }
-                    });
-                  },
+                  onChanged: _handleRequesterFieldChanged,
                 ),
               ),
               SizedBox(