fix: make sure to save changes

src/main/java/emu/nebula/game/activity/type/PenguinCardActivity.java

@@ -21,8 +21,8 @@ import lombok.Setter;
 @Getter
 @Entity
 public class PenguinCardActivity extends GameActivity {
-    private Map<Integer, LevelStats> completedLevels = new Int2ObjectOpenHashMap<>();
-    private Int2IntMap completedQuests = new Int2IntOpenHashMap();
+    private Map<Integer, LevelStats> completedLevels;
+    private Int2IntMap completedQuests;
     
     @Deprecated // Morphia only
     public PenguinCardActivity() {
@@ -31,6 +31,8 @@ public class PenguinCardActivity extends GameActivity {
     
     public PenguinCardActivity(ActivityManager manager, ActivityDef data) {
         super(manager, data);
+        this.completedLevels = new Int2ObjectOpenHashMap<>();
+        this.completedQuests = new Int2IntOpenHashMap();
     }
     
     // Proto

src/main/java/emu/nebula/server/handlers/HandlerActivityPenguinCardSettleReq.java

@@ -26,6 +26,9 @@ public class HandlerActivityPenguinCardSettleReq extends NetHandler {
         data.setStars(req.getStar());
         activity.getCompletedLevels().put(req.getLevelId(), data);
 
+        // Save changes
+        session.getPlayer().save();
+
         // Encode and send
         return session.encodeMsg(NetMsgId.activity_penguin_card_level_settle_succeed_ack);
     }