feat: Bump version to 2.5.12 in pom.xml and add metadata setting in BaseAgent

pom.xml

@@ -4,7 +4,7 @@
 	<artifactId>lm-lib</artifactId>
 	<groupId>de.extio</groupId>
 	<name>lm-lib</name>
-	<version>2.5.11</version>
+	<version>2.5.12</version>
 	
 	<properties>
 		<java.version>25</java.version>

src/main/java/de/extio/lmlib/agent/BaseAgent.java

@@ -426,6 +426,7 @@ public interface BaseAgent {
 				final var lastUserTurn = conversation.getConversation().getLast();
 				conversation.replaceTurn(new Turn(TurnType.USER, lastUserTurn.text() + "\n" + split.text()));
 			}
+			conversation.setMetadata("Agent: " + this.name());
 		}
 		return conversation;
 	}