修复实体绑定问题

src/main/java/com/extendedae_plus/ExtendedAEPlus.java

@@ -72,6 +72,14 @@ public class ExtendedAEPlus {
             ModNetwork.register();
             // 注册自定义 Curios 宿主定位器，便于将菜单宿主信息在服务端与客户端间同步
             MenuLocators.register(CuriosItemLocator.class, CuriosItemLocator::writeToPacket, CuriosItemLocator::readFromPacket);
+            
+            // 绑定方块实体类型，避免 blockEntityClass 为 null 的问题
+            ModBlocks.ASSEMBLER_MATRIX_UPLOAD_CORE.get().setBlockEntity(
+                com.extendedae_plus.content.matrix.UploadCoreBlockEntity.class,
+                ModBlockEntities.UPLOAD_CORE_BE.get(),
+                null,
+                null
+            );
         });
     }