客户端rsa，冗余清理，bug修复，安卓build问题

Assets/Editor/PackagingResetTool.cs

@@ -35,6 +35,7 @@ public static class PackagingResetTool
             "将执行以下重置（仅玩家进度，不改配置/解锁/技能配装）：\n\n" +
             "1. 玩家：金币、材料、经验、等级清零\n" +
             "2. 英雄：经验、成长阶位、自动突破、等级锁、出战/完成/MVP 统计、入队日期清零\n" +
+            "2.5 歌曲：游玩次数、累计时长、各难度成绩记录清零（歌曲解锁/谱面配置不动）\n" +
             "3. 装备：删除 " + GeneratedEquipmentFolder + " 下所有生成装备，清除英雄已装备引用\n" +
             "4. 商店：所有物品 purchasedCount、user_has_read 清零（限购配置 itemPurchaseQuota 不动）\n" +
             "5. 清理本机测试存档（.cache_bridge 货币/成长/装备/商店存档，不含拥有权账本）与相关 PlayerPrefs\n\n" +
@@ -56,6 +57,7 @@ public static class PackagingResetTool
 
             errors += ResetPlayers(report);
             errors += ResetHeroes(report);
+            errors += ResetSongs(report);
             errors += DeleteGeneratedEquipmentAssets(report);
             errors += ResetStoreItems(report);
         }
@@ -160,6 +162,68 @@ public static class PackagingResetTool
         return 0;
     }
 
+    private static int ResetSongs(StringBuilder report)
+    {
+        int count = 0;
+        int charts = 0;
+        foreach (var guid in AssetDatabase.FindAssets("t:SongData"))
+        {
+            string path = AssetDatabase.GUIDToAssetPath(guid);
+            var so = AssetDatabase.LoadAssetAtPath<SongData>(path);
+            if (so == null)
+            {
+                continue;
+            }
+
+            var serialized = new SerializedObject(so);
+            // 顶层游玩进度（不动 songID / isUnlocked / bpm / 谱面配置等）。
+            SetStringIfPresent(serialized, "usernameID", string.Empty);
+            SetIntIfPresent(serialized, "game_enterTimes", 0);
+            SetFloatIfPresent(serialized, "time_totalPlayingTime", 0f);
+
+            // 逐难度成绩记录（chartFiles 数组内），只清成绩，保留难度/敌人/谱面配置。
+            var chartFiles = serialized.FindProperty("chartFiles");
+            if (chartFiles != null && chartFiles.isArray)
+            {
+                for (int i = 0; i < chartFiles.arraySize; i++)
+                {
+                    var entry = chartFiles.GetArrayElementAtIndex(i);
+                    SetChildInt(entry, "lastScoreForThisDifficulty", 0);
+                    SetChildInt(entry, "chartPersonalRecordForThisDifficulty", 0);
+                    SetChildInt(entry, "idolPersonalRecordForThisDifficulty", 0);
+                    SetChildInt(entry, "totalPersonalRecordForThisDifficulty", 0);
+                    SetChildFloat(entry, "levelProgressForThisDifficulty", 0f);
+                    charts++;
+                }
+            }
+
+            serialized.ApplyModifiedPropertiesWithoutUndo();
+            EditorUtility.SetDirty(so);
+            count++;
+        }
+
+        report.AppendLine("歌曲资产已重置：" + count + " 个 SongData（游玩次数/时长/" + charts + " 条难度成绩记录）。");
+        return 0;
+    }
+
+    private static void SetChildInt(SerializedProperty parent, string field, int value)
+    {
+        var prop = parent.FindPropertyRelative(field);
+        if (prop != null)
+        {
+            prop.intValue = value;
+        }
+    }
+
+    private static void SetChildFloat(SerializedProperty parent, string field, float value)
+    {
+        var prop = parent.FindPropertyRelative(field);
+        if (prop != null)
+        {
+            prop.floatValue = value;
+        }
+    }
+
     private static int DeleteGeneratedEquipmentAssets(StringBuilder report)
     {
         if (!AssetDatabase.IsValidFolder(GeneratedEquipmentFolder))