AutoCommit: Bool → Dropdown (mention/enforce/forbid), leerer System-Prompt fix

Models/AgentRecord.cs

@@ -10,7 +10,7 @@ public class AgentRecord
     public string Model { get; set; }           // sonnet, opus
     public string ToolChoice { get; set; }      // "any" oder "auto"
     public string CustomCommands { get; set; }
-    public bool AutoCommit { get; set; }
+    public string AutoCommit { get; set; } = "";  // "", "mention", "forbid"
     public bool UseSoul { get; set; } = true;
     public bool UseIdentity { get; set; } = true;
     public bool UseUserInfo { get; set; } = true;