fix: Ensure the gRPC service is started correctly

Author: fjuma

reference/grpc/src/main/resources/META-INF/beans.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<beans xmlns="https://jakarta.ee/xml/ns/jakartaee"
-       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-       xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/beans_4_0.xsd"
-       version="4.0" bean-discovery-mode="all">
-</beans>

spec-grpc/src/main/resources/META-INF/beans.xml

@@ -1,3 +1 @@
-# The GrpcHandler @ApplicationScoped annotation is not compatible with Quarkus
-quarkus.arc.exclude-types=io.a2a.grpc.handler.GrpcHandler
 %dev.quarkus.http.port=9999

tck/src/main/resources/application.properties

@@ -3,6 +3,8 @@
 import static io.a2a.grpc.utils.ProtoUtils.FromProto;
 import static io.a2a.grpc.utils.ProtoUtils.ToProto;
 
+import jakarta.enterprise.inject.Vetoed;
+
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -43,6 +45,7 @@
 import io.grpc.Status;
 import io.grpc.stub.StreamObserver;
 
+@Vetoed
 public abstract class GrpcHandler extends A2AServiceGrpc.A2AServiceImplBase {
 
     // Hook so testing can wait until streaming subscriptions are established.

transport/grpc/src/main/java/io/a2a/grpc/handler/GrpcHandler.java

@@ -2,5 +2,5 @@
 <beans xmlns="https://jakarta.ee/xml/ns/jakartaee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/beans_4_0.xsd"
-       version="4.0" bean-discovery-mode="all">
+       bean-discovery-mode="annotated">
 </beans>