Refactor toolbox and function handling to support synthetic fields and improve type definitions

anthropic.go

@@ -134,15 +134,16 @@ func (a anthropic) requestToAnthropicRequest(req Request) anth.MessagesRequest {
 		}
 	}
 
-	if req.Toolbox != nil {
-		for _, tool := range req.Toolbox.funcs {
+	/*
+		for _, tool := range req.Toolbox.functions {
 			res.Tools = append(res.Tools, anth.ToolDefinition{
 				Name:        tool.Name,
 				Description: tool.Description,
-				InputSchema: tool.Parameters,
+				InputSchema: tool.Parameters.OpenAIParameters(),
 			})
 		}
-	}
+
+	*/
 
 	res.Messages = msgs