Add get_bot_status abstract method to InferenceBot

inference_bot.py

@@ -44,3 +44,8 @@ class InferenceBot(ABC):
         Example usage in subclass: self.processing_status.get(user_id)
         """
         pass
+    
+    @abstractmethod
+    def get_bot_status(self):
+        """Returns a human-readable message describing the model in use and the system prompt path."""
+        pass