Add SupportsTemperature capability to model handling

Introduced a new `SupportsTemperature` property in the `ModelCapability` structure to specify whether models support temperature control. Updated the capability map in `OpenAIModelExtensions` to reflect this new property for all models.

Added two new extension methods to check temperature support for models (`SupportsTemperature` for both `OpenAIModel` and string model IDs). Updated `OpenAIService` to dynamically set temperature based on model capabilities, replacing hardcoded assumptions about specific model families (e.g., O-series).

Ensured backward compatibility by extending the `ModelCapability` structure. Improved flexibility and maintainability by aligning logic with the updated capability map.

Author: AlexRynas

src/DesktopApp/ImageToPose.Core/Models/OperatingMode.cs

@@ -51,12 +51,12 @@ static OpenAIModelExtensions()
         // Conservative defaults: many o-series and 4.1-family models do not allow token logprobs.
         var caps = new Dictionary<OpenAIModel, ModelCapability>
         {
-            [OpenAIModel.Gpt41Nano] = new ModelCapability(SupportsLogProbs: true),
-            [OpenAIModel.Gpt41Mini] = new ModelCapability(SupportsLogProbs: true),
-            [OpenAIModel.Gpt41] = new ModelCapability(SupportsLogProbs: true),
-            [OpenAIModel.O4Mini] = new ModelCapability(SupportsLogProbs: false),
-            [OpenAIModel.Gpt5] = new ModelCapability(SupportsLogProbs: false),
-            [OpenAIModel.O3] = new ModelCapability(SupportsLogProbs: false)
+            [OpenAIModel.Gpt41Nano] = new ModelCapability(SupportsLogProbs: true, SupportsTemperature: true),
+            [OpenAIModel.Gpt41Mini] = new ModelCapability(SupportsLogProbs: true, SupportsTemperature: true),
+            [OpenAIModel.Gpt41] = new ModelCapability(SupportsLogProbs: true, SupportsTemperature: true),
+            [OpenAIModel.O4Mini] = new ModelCapability(SupportsLogProbs: false, SupportsTemperature: false),
+            [OpenAIModel.Gpt5] = new ModelCapability(SupportsLogProbs: false, SupportsTemperature: true),
+            [OpenAIModel.O3] = new ModelCapability(SupportsLogProbs: false, SupportsTemperature: false)
         };
         _capabilities = new ReadOnlyDictionary<OpenAIModel, ModelCapability>(caps);
         All = Array.AsReadOnly(allValues);
@@ -88,9 +88,15 @@ public static bool SupportsLogProbs(this OpenAIModel model)
 
     public static bool SupportsLogProbs(string modelId)
         => TryParse(modelId, out var m) && m.SupportsLogProbs();
+
+    public static bool SupportsTemperature(this OpenAIModel model)
+        => _capabilities.TryGetValue(model, out var cap) && cap.SupportsTemperature;
+
+    public static bool SupportsTemperature(string modelId)
+        => TryParse(modelId, out var m) && m.SupportsTemperature();
 }
 
-public readonly record struct ModelCapability(bool SupportsLogProbs);
+public readonly record struct ModelCapability(bool SupportsLogProbs, bool SupportsTemperature);
 
 public static class ModeModelMap
 {

src/DesktopApp/ImageToPose.Core/Services/IOpenAIService.cs

@@ -220,14 +220,14 @@ public async Task<ExtendedPose> AnalyzePoseAsync(PoseInput input, CancellationTo
             MaxOutputTokenCount = 1000
         };
 
-        // O-series models only support default temperature (1)
-        if (!IsOSeriesModel(model))
+        // Set temperature only if the resolved model supports it
+        if (OpenAIModelExtensions.SupportsTemperature(model))
         {
             chatOptions.Temperature = temperature;
         }
         else
         {
-            temperature = 1.0f; // Use default for O-series models
+            temperature = 1.0f; // Use default for models that do not support temperature control
         }
 
         // Enable logprobs only when explicitly supported by our capability map
@@ -347,14 +347,14 @@ public async Task<PoseRig> GenerateRigAsync(string extendedPoseText, Cancellatio
             MaxOutputTokenCount = 2000
         };
 
-        // O-series models only support default temperature (1)
-        if (!IsOSeriesModel(model))
+        // Set temperature only if the resolved model supports it
+        if (OpenAIModelExtensions.SupportsTemperature(model))
         {
             chatOptions.Temperature = temperature;
         }
         else
         {
-            temperature = 1.0f; // Use default for O-series models
+            temperature = 1.0f; // Use default for models that do not support temperature control
         }
 
         // Enable logprobs only when explicitly supported by our capability map