결재 및 마스터 모듈을 v4 API 계약에 맞게 조정

lib/features/approvals/data/repositories/approval_repository_remote.dart

@@ -25,24 +25,28 @@ class ApprovalRepositoryRemote implements ApprovalRepository {
   Future<PaginatedResult<Approval>> list({
     int page = 1,
     int pageSize = 20,
-    String? query,
-    String? status,
-    DateTime? from,
-    DateTime? to,
+    int? transactionId,
+    int? approvalStatusId,
+    int? requestedById,
     bool includeHistories = false,
     bool includeSteps = false,
   }) async {
+    final includeParts = <String>[];
+    if (includeSteps) {
+      includeParts.add('steps');
+    }
+    if (includeHistories) {
+      includeParts.add('histories');
+    }
     final response = await _api.get<Map<String, dynamic>>(
       _basePath,
       query: {
         'page': page,
         'page_size': pageSize,
-        if (query != null && query.isNotEmpty) 'q': query,
-        if (status != null && status.isNotEmpty) 'status': status,
-        if (from != null) 'from': from.toIso8601String(),
-        if (to != null) 'to': to.toIso8601String(),
-        if (includeHistories) 'include_histories': true,
-        if (includeSteps) 'include_steps': true,
+        if (transactionId != null) 'transaction_id': transactionId,
+        if (approvalStatusId != null) 'approval_status_id': approvalStatusId,
+        if (requestedById != null) 'requested_by_id': requestedById,
+        if (includeParts.isNotEmpty) 'include': includeParts.join(','),
       },
       options: Options(responseType: ResponseType.json),
     );
@@ -56,12 +60,16 @@ class ApprovalRepositoryRemote implements ApprovalRepository {
     bool includeSteps = true,
     bool includeHistories = true,
   }) async {
+    final includeParts = <String>[];
+    if (includeSteps) {
+      includeParts.add('steps');
+    }
+    if (includeHistories) {
+      includeParts.add('histories');
+    }
     final response = await _api.get<Map<String, dynamic>>(
       '$_basePath/$id',
-      query: {
-        if (includeSteps) 'include_steps': true,
-        if (includeHistories) 'include_histories': true,
-      },
+      query: {if (includeParts.isNotEmpty) 'include': includeParts.join(',')},
       options: Options(responseType: ResponseType.json),
     );
     final data = (response.data?['data'] as Map<String, dynamic>?) ?? {};