Added local RAG (#756)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Provider/IProvider.cs

@@ -34,6 +34,11 @@ public interface IProvider
     /// </summary>
     public string AdditionalJsonApiParameters { get; }
 
+    /// <summary>
+    /// 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.