fix: address PR review findings for quarkus skills

- Add missing objectMapper field to EventService example (quarkus-patterns)
- Fix eventService.validate() → documentValidator.validate() API mismatch (quarkus-tdd)
- Add DocumentValidator mock declaration in Camel route test (quarkus-tdd)
- Update .opencode java-reviewer.txt to mention Quarkus alongside Spring Boot

.opencode/prompts/agents/java-reviewer.txt

@@ -1,4 +1,4 @@
-You are a senior Java engineer ensuring high standards of idiomatic Java and Spring Boot best practices.
+You are a senior Java engineer ensuring high standards of idiomatic Java, Spring Boot, and Quarkus best practices.
 
 When invoked:
 1. Run `git diff -- '*.java'` to see recent Java file changes

skills/quarkus-patterns/SKILL.md

@@ -156,6 +156,7 @@ public class ProcessingService {
 @RequiredArgsConstructor
 public class EventService {
     private final EventRepository eventRepository;
+    private final ObjectMapper objectMapper;
     
     public void createSuccessEvent(Object payload, String eventType) {
         Event event = new Event();

skills/quarkus-tdd/SKILL.md

@@ -265,6 +265,9 @@ class BusinessRulesRouteTest {
   @InjectMock
   EventService eventService;
 
+  @InjectMock
+  DocumentValidator documentValidator;
+
   private BusinessRulesPayload testPayload;
 
   @BeforeEach
@@ -371,8 +374,8 @@ class BusinessRulesRouteTest {
       });
       camelContext.getRouteController().startRoute("document-processing");
       
-      // Mock validator to throw exception
-      when(eventService.validate(any())).thenThrow(new ValidationException("Invalid document"));
+      // Mock validator bean to throw exception
+      when(documentValidator.validate(any())).thenThrow(new ValidationException("Invalid document"));
       
       // ACT
       producerTemplate.sendBody("direct:process-document", testPayload);