Importing data — Let AI refine the plan

When an AI model is configured, it reviews the detected plan and refines it: cleaner table and field names, better type calls, an emoji for each table, and rollups where the data makes them meaningful. It also writes a one-line summary and a short list of suggestions — things it noticed and ideas for later — shown above the plan. Without a model configured, the built-in detection still produces the full plan on its own. AI runs only during analysis; the import step itself never calls the model.