Fixed model capabilities and how model names are matched (#958)

app/MindWork AI Studio/Settings/ProviderExtensions.Perplexity.cs

@@ -6,31 +6,34 @@ public static partial class ProviderExtensions
 {
     private static List<Capability> GetModelCapabilitiesPerplexity(Model model)
     {
-        var modelName = model.Id.ToLowerInvariant().AsSpan();
+        var modelName = NormalizeModelId(model.Id).AsSpan();
         
+        //
+        // No Sonar model writes images. What looked like it does is the option to have the
+        // answer come with images: those are pictures the search found on the pages it read,
+        // handed back as links, not something the model drew.
+        //
         if(modelName.IndexOf("reasoning") is not -1 ||
            modelName.IndexOf("deep-research") is not -1)
             return
             [
                 Capability.TEXT_INPUT,
                 Capability.MULTIPLE_IMAGE_INPUT,
-                
+
                 Capability.TEXT_OUTPUT,
-                Capability.IMAGE_OUTPUT,
-                
+
                 Capability.ALWAYS_REASONING,
                 Capability.WEB_SEARCH,
                 Capability.CHAT_COMPLETION_API,
             ];
-        
+
         return
         [
             Capability.TEXT_INPUT,
             Capability.MULTIPLE_IMAGE_INPUT,
-            
+
             Capability.TEXT_OUTPUT,
-            Capability.IMAGE_OUTPUT,
-            
+
             Capability.WEB_SEARCH,
             Capability.CHAT_COMPLETION_API,
         ];