disabling tool invocation stops sending it the tools

src/manager/manager.py

@@ -91,7 +91,10 @@ class GeminiManager:
                           max_tries=3,
                           jitter=None)
     def generate_response(self, messages):
-        tools = self.toolsLoader.getTools()
+        if self.check_mode(Mode.ENABLE_TOOL_INVOCATION):
+            tools = self.toolsLoader.getTools()
+        else:
+            tools = []
         return self.client.models.generate_content_stream(
             model=self.model_name,
             contents=messages,