Add get_bot_status abstract method to InferenceBot

inference_bot.py

@@ -43,4 +43,9 @@ class InferenceBot(ABC):
         An attribute (e.g., a dictionary) to store the processing status for users.
         Example usage in subclass: self.processing_status.get(user_id)
         """
-        pass
+        pass
+    
+    @abstractmethod
+    def get_bot_status(self):
+        """Returns a human-readable message describing the model in use and the system prompt path."""
+        pass