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

Endpoints/AgentEndpoint.cs

@@ -54,7 +54,7 @@ public static class AgentEndpoint
             Model = body.TryGetProperty("model", out var m) ? m.GetString() ?? "sonnet" : "sonnet",
             ToolChoice = body.TryGetProperty("toolChoice", out var tc) ? tc.GetString() ?? "any" : "any",
             CustomCommands = customCommands,
-            AutoCommit = body.TryGetProperty("autoCommit", out var ac) && ac.GetBoolean(),
+            AutoCommit = body.TryGetProperty("autoCommit", out var ac) ? ac.GetString() ?? "" : "",
             UseSoul = !body.TryGetProperty("useSoul", out var us) || us.GetBoolean(),
             UseIdentity = !body.TryGetProperty("useIdentity", out var ui) || ui.GetBoolean(),
             UseUserInfo = !body.TryGetProperty("useUserInfo", out var uu) || uu.GetBoolean(),
@@ -83,7 +83,7 @@ public static class AgentEndpoint
         if (body.TryGetProperty("toolChoice", out var tc)) agent.ToolChoice = tc.GetString();
         if (body.TryGetProperty("customCommands", out var cc))
             agent.CustomCommands = cc.ValueKind == JsonValueKind.Null ? null : cc.GetRawText();
-        if (body.TryGetProperty("autoCommit", out var ac)) agent.AutoCommit = ac.GetBoolean();
+        if (body.TryGetProperty("autoCommit", out var ac)) agent.AutoCommit = ac.GetString() ?? "";
         if (body.TryGetProperty("useSoul", out var us)) agent.UseSoul = us.GetBoolean();
         if (body.TryGetProperty("useIdentity", out var ui)) agent.UseIdentity = ui.GetBoolean();
         if (body.TryGetProperty("useUserInfo", out var uu)) agent.UseUserInfo = uu.GetBoolean();

Endpoints/ChatEndpoint.cs

@@ -146,10 +146,9 @@ public static class ChatEndpoint
             }, attachmentRecords);
         }
 
-        var systemPrompt = new List<object>
-        {
-            new { type = "text", text = systemPromptText }
-        };
+        var systemPrompt = string.IsNullOrWhiteSpace(systemPromptText)
+            ? new List<object>()
+            : new List<object> { new { type = "text", text = systemPromptText } };
 
         var workspace = session.Workspace;
         if (!string.IsNullOrEmpty(workspace))