# Phase 3 Step 2: Trello Lists Support

## Description
To enable "Add Card" functionality, we need to know the available lists for each board. Currently, the `Board` model does not include lists, and the API client only fetches lists internally to map names.

## Requirements
1.  **Update Models**: Add `List` struct and `Lists` field to `Board`.
2.  **Update Interface**: Add `GetLists` to `TrelloAPI`.
3.  **Update Client**:
    *   Refactor `getLists` to return `[]models.List`.
    *   Update `GetBoardsWithCards` to populate `board.Lists`.
    *   Implement public `GetLists`.

## Plan
1.  Modify `internal/models/types.go`.
2.  Modify `internal/api/interfaces.go`.
3.  Modify `internal/api/trello.go`.

## Verification
*   Run `go test ./internal/api/...` to ensure no regressions.
*   (Implicit) The UI will eventually use this data.