Keep provider management working when tokenizer storage fails

app/MindWork AI Studio/Provider/IProvider.cs

@@ -38,7 +38,8 @@ public interface IProvider
     /// The tokenizer path associated with this provider configuration.
     /// </summary>
     public string TokenizerPath { get; }
-    
+
+    /// <summary>
     /// Whether this provider instance can load available models from the backend/API.
     /// This capability may differ by provider type, host, or modality.
     /// </summary>