refactor: Finalize agent template

sources/agents/AgentConfig.hpp

@@ -19,7 +19,7 @@ struct AgentConfig
     QString providerInstance;
     QString model;
     QString endpoint;
-    QString role;
+    QString systemPrompt;
     QStringList tags;
 
     struct Match
@@ -40,10 +40,7 @@ struct AgentConfig
     bool enableThinking = false;
     bool enableTools = false;
 
-    QString messageFormat;
-    QJsonObject sampling;
-    QJsonObject thinking;
-    QString context;
+    QJsonObject body;
     QString extendsName;
     bool abstract = false;
     bool hidden = false;