客户端rsa，冗余清理，bug修复，安卓build问题

Assets/scripts/dailyTask/DailyTaskSaveService.cs

@@ -6,12 +6,19 @@ public static class DailyTaskSaveService
 {
     private const string SaveCategory = "daily_task";
     private const string SaveKey = "runtime";
+    private const string RecoverySlotKey = "daily_task_runtime";
 
     private static string LegacySaveFilePath
     {
         get { return Path.Combine(Application.persistentDataPath, "daily_tasks.json"); }
     }
 
+    public static bool HasAnyRecoverableState()
+    {
+        return SecureSaveVault.HasAnyRecoverableState(SaveCategory, SaveKey, LegacySaveFilePath)
+            || LocalRecoveryMirror.HasSlotData(RecoverySlotKey);
+    }
+
     public static DailyTaskSaveData Load()
     {
         try
@@ -22,6 +29,12 @@ public static class DailyTaskSaveService
                 return data ?? new DailyTaskSaveData();
             }
 
+            if (LocalRecoveryMirror.TryLoadJson(RecoverySlotKey, out data) && data != null)
+            {
+                SecureSaveVault.SaveJson(SaveCategory, SaveKey, data, LegacySaveFilePath);
+                return data;
+            }
+
             return new DailyTaskSaveData();
         }
         catch (Exception ex)
@@ -41,10 +54,24 @@ public static class DailyTaskSaveService
         try
         {
             SecureSaveVault.SaveJson(SaveCategory, SaveKey, data, LegacySaveFilePath);
+            LocalRecoveryMirror.SaveJson(RecoverySlotKey, data);
         }
         catch (Exception ex)
         {
             Debug.LogWarning($"[DailyTaskSaveService] Save failed: {ex.Message}");
         }
     }
+
+    public static void ClearPersistentState()
+    {
+        try
+        {
+            SecureSaveVault.Delete(SaveCategory, SaveKey, LegacySaveFilePath);
+            LocalRecoveryMirror.DeleteSlot(RecoverySlotKey);
+        }
+        catch (Exception ex)
+        {
+            Debug.LogWarning($"[DailyTaskSaveService] Clear failed: {ex.Message}");
+        }
+    }
 }