diag.md

+---------------------+
| hf-llm-bill-chat/   |
+---------------------+
          |
          +---------------------+
          | app.py              |
          +---------------------+
          |
          +---------------------+
          | pages/              |
          +---------------------+
          |     |
          |     +---------------------+
          |     | One_model.py        |
          |     +---------------------+
          |     |
          |     +---------------------+
          |     | Two_models.py       |
          |     +---------------------+
          |
          +---------------------+
          | data/               |
          +---------------------+
          |     |
          |     +---------------------+
          |     | user_data/          |
          |     +---------------------+
          |           |
          |           +---------------------+
          |           | user_data_724077190.json |
          |           +---------------------+
          |
          +---------------------+
          | logs/               |
          +---------------------+
                |
                +---------------------+
                | conversation_logs.json |
                +---------------------+