Update data version and add new chess event

src/main/java/emu/nebula/GameConstants.java

@@ -6,7 +6,7 @@ import emu.nebula.game.inventory.ItemParam;
 import emu.nebula.util.WeightedList;
 
 public class GameConstants {
-    public static final String VERSION = "1.4.0";
+    public static final String VERSION = "1.5.0";
     public static int DATA_VERSION = 0;
     
     public static final ZoneId UTC_ZONE = ZoneId.of("UTC");

src/main/java/emu/nebula/game/activity/ActivityModule.java

@@ -41,7 +41,7 @@ public class ActivityModule extends GameContextModule {
         this.activities.add(700110);
 
         // Tower defense activity
-        this.activities.add(102001);
+        this.activities.add(102002);
         
         // Christmas 2025 login events
         this.activities.add(301011);

src/main/resources/versions.json

@@ -1,7 +1,7 @@
 {
-  "global": 80,
-  "kr": 87,
-  "jp": 84,
-  "tw": 88,
-  "cn": 82
+  "global": 81,
+  "kr": 88,
+  "jp": 85,
+  "tw": 89,
+  "cn": 83
 }