use agent name as branch name (#841)

Signed-off-by: Dmitrii Tikhomirov <chani.liet@gmail.com>

Author: treblereel

experimental/fluent/agentic/src/main/java/io/serverlessworkflow/fluent/agentic/AgentTaskItemListBuilder.java

@@ -92,10 +92,9 @@ public AgentTaskItemListBuilder parallel(String name, Object... agents) {
           List<AgentExecutor> execs = AgentAdapters.toExecutors(agents);
           for (int i = 0; i < execs.size(); i++) {
             AgentExecutor ex = execs.get(i);
-            fork.branch(
-                "branch-" + i + "-" + name,
-                AgentAdapters.toFunction(ex),
-                DefaultAgenticScope.class);
+            String agentName = ex.agentName() != null ? ex.agentName() : "branch-" + i + "-" + name;
+
+            fork.branch(agentName, AgentAdapters.toFunction(ex), DefaultAgenticScope.class);
           }
         });
     return self();

experimental/fluent/agentic/src/test/java/io/serverlessworkflow/fluent/agentic/AgentDslWorkflowTest.java

@@ -101,7 +101,7 @@ void dslLoopAgents() {
   @Test
   void dslParallelAgents() {
     var a1 = AgentsUtils.newMovieExpert();
-    var a2 = AgentsUtils.newMovieExpert();
+    var a2 = AgentsUtils.newMovieExpert2();
 
     Workflow wf = workflow("forkFlow").parallel("fanout", a1, a2).build();
 
@@ -112,8 +112,8 @@ void dslParallelAgents() {
     // two branches created
     assertThat(fork.getFork().getBranches()).hasSize(2);
     // branch names follow "branch-{index}-{name}"
-    assertThat(fork.getFork().getBranches().get(0).getName()).isEqualTo("branch-0-fanout");
-    assertThat(fork.getFork().getBranches().get(1).getName()).isEqualTo("branch-1-fanout");
+    assertThat(fork.getFork().getBranches().get(0).getName()).isEqualTo("findMovie");
+    assertThat(fork.getFork().getBranches().get(1).getName()).isEqualTo("findMovie2");
   }
 
   @Test

experimental/fluent/agentic/src/test/java/io/serverlessworkflow/fluent/agentic/AgentsUtils.java

@@ -32,6 +32,15 @@ public static Agents.MovieExpert newMovieExpert() {
             .build());
   }
 
+  public static Agents.MovieExpert newMovieExpert2() {
+    return spy(
+        AgenticServices.agentBuilder(Agents.MovieExpert.class)
+            .outputName("movies")
+            .name("findMovie2")
+            .chatModel(BASE_MODEL)
+            .build());
+  }
+
   public static Agents.CreativeWriter newCreativeWriter() {
     return spy(
         AgenticServices.agentBuilder(Agents.CreativeWriter.class)