fix(aria): enable Spring Data page DTO serialization for consistent pagination JSON

Without @EnableSpringDataWebSupport(VIA_DTO) the API returned totalElements
at the top level. Frontend expects {content, page: {totalElements, totalPages,
number}} — the DTO format. Fixes Load Failed on all paginated pages.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/main/java/com/hiveops/aria/AriaApplication.java

@@ -3,11 +3,13 @@ package com.hiveops.aria;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.data.web.config.EnableSpringDataWebSupport;
 import org.springframework.scheduling.annotation.EnableScheduling;
 
 @SpringBootApplication
 @EnableCaching
 @EnableScheduling
+@EnableSpringDataWebSupport(pageSerializationMode = EnableSpringDataWebSupport.PageSerializationMode.VIA_DTO)
 public class AriaApplication {
     public static void main(String[] args) {
         SpringApplication.run(AriaApplication.class, args);