Fix Dotnet AF sample

dotnet/agent-framework/sample-agent/Agent/MyAgent.cs

@@ -310,7 +310,9 @@ await A365OtelWrapper.InvokeObservedAgentOperation(
             // Create Chat Options with tools:
             var toolOptions = new ChatOptions
             {
-                Temperature = (float?)0.2,
+                // Note: Some models (e.g., o1, o3, gpt-5.2-chat) require Temperature = 1(default) because they do not support other values.
+                // Standard GPT models (GPT-3.5, GPT-4) typically support temperature range 0.0 to 2.0.
+                Temperature = (float?)1,
                 Tools = toolList
             };
 

dotnet/agent-framework/sample-agent/Properties/launchSettings.json

@@ -0,0 +1,13 @@
+{
+  "profiles": {
+    "AgentFrameworkSampleAgent": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development",
+        "BEARER_TOKEN": ""
+      },
+      "applicationUrl": "https://localhost:62738;http://localhost:62739"
+    }
+  }
+}