fix EcsRest struct size mismatch

Author: elebras1

examples/src/main/java/com/github/elebras1/flecs/examples/RestLifecycleExample.java

@@ -0,0 +1,26 @@
+package com.github.elebras1.flecs.examples;
+
+import com.github.elebras1.flecs.Flecs;
+
+public class RestLifecycleExample {
+
+    public static void main(String[] args) throws InterruptedException {
+        try (Flecs world = new Flecs()) {
+            System.out.println("=== Flecs REST Lifecycle Test ===");
+
+            for(int i = 0; i < 50; i++) {
+                System.out.println("[" + i + "] Enabling REST...");
+                world.enableRest();
+                world.progress(0.016f);
+                Thread.sleep(100);
+                System.out.println("   -> REST should be active.");
+                System.out.println("[" + i + "] Disabling REST...");
+                world.disableRest();
+
+                world.progress(0.016f);
+                Thread.sleep(100);
+                System.out.println("   -> REST should be inactive.");
+            }
+        }
+    }
+}

src/main/java/com/github/elebras1/flecs/Flecs.java

@@ -725,6 +725,10 @@ public void fromJson(String json) {
         }
     }
 
+    public void enableRest() {
+        this.enableRest((short) 27750);
+    }
+
     public void enableRest(short port) {
         this.checkClosed();
 
@@ -739,13 +743,14 @@ public void enableRest(short port) {
             long restCompId = flecs_h.ecs_lookup(this.nativeWorld, restCompName);
 
             if (restCompId == 0) {
-                throw new IllegalStateException("Failed to find flecs.rest.Rest component. Make sure FlecsRest module is imported.");
+                throw new IllegalStateException("Failed to find flecs.rest.Rest component.");
             }
 
-            MemorySegment restData = arena.allocate(2);
+            MemorySegment restData = arena.allocate(32);
+            restData.fill((byte) 0);
             restData.set(ValueLayout.JAVA_SHORT, 0, port);
 
-            flecs_h.ecs_set_id(this.nativeWorld, restCompId, restCompId, 2, restData);
+            flecs_h.ecs_set_id(this.nativeWorld, restCompId, restCompId, 32, restData);
         }
     }