...

lib/models/game_rank_dto.dart

@@ -2,14 +2,20 @@
 
 class GameRankDto {
   final String playerName;
-  final int primaryScore; // 스도쿠에서는 시간(초)
+  final int primaryScore;   // 시간 (초)
+  final int? secondaryScore; // 점수 (저장된 값, 예: 0~4)
 
-  GameRankDto({required this.playerName, required this.primaryScore});
+  GameRankDto({
+    required this.playerName, 
+    required this.primaryScore, 
+    this.secondaryScore
+  });
 
   factory GameRankDto.fromJson(Map<String, dynamic> json) {
     return GameRankDto(
       playerName: json['playerName'],
       primaryScore: (json['primaryScore'] as num).toInt(),
+      secondaryScore: (json['secondaryScore'] as num?)?.toInt(),
     );
   }
 }

lib/models/sudoku_game_dto.dart

@@ -1,23 +1,23 @@
 // lib/models/sudoku_game_dto.dart
 
-// 🔽 [수정] PuzzleData.kt의 새 DTO (puzzleId -> blockSize)
 class SudokuGameDto {
+  final int puzzleId; // 👈 [추가] 서버에서 보낸 ID
   final String question;
   final String solution;
-  final int blockSize; // 예: 3 (3x3 블록)
-  
-  // 🔽 [추가] blockSize로부터 gridSize 계산 (예: 9)
+  final int blockSize;
   final int gridSize;
 
   SudokuGameDto({
+    required this.puzzleId, // 👈 [추가]
     required this.question,
     required this.solution,
     required this.blockSize,
-  }) : gridSize = blockSize * blockSize; // 생성 시 gridSize 자동 계산
+  }) : gridSize = blockSize * blockSize;
 
   factory SudokuGameDto.fromJson(Map<String, dynamic> json) {
     int bs = json['blockSize'] ?? 3;
     return SudokuGameDto(
+      puzzleId: json['puzzleId'], // 👈 [추가] 서버의 puzzleId 매핑
       question: json['question'],
       solution: json['solution'],
       blockSize: bs,

lib/models/unified_rank_dto.dart

@@ -1,6 +1,7 @@
 // lib/models/unified_rank_dto.dart
 
 class UnifiedRankDto {
+  final String userId; // 👈 [추가] 앱-고유 ID
   final String gameType;
   final String? contextId;
   final String playerName;
@@ -8,6 +9,7 @@ class UnifiedRankDto {
   final int? secondaryScore;
 
   UnifiedRankDto({
+    required this.userId, // 👈 [추가] 생성자에 추가
     required this.gameType,
     this.contextId,
     required this.playerName,
@@ -18,6 +20,7 @@ class UnifiedRankDto {
   // Dart 객체를 JSON으로 변환 (서버 전송용)
   Map<String, dynamic> toJson() {
     return {
+      'userId': userId, // 👈 [추가]
       'gameType': gameType,
       'contextId': contextId,
       'playerName': playerName,