Defining Category Order via JSON, ImageCard Sizes

1. Is it possible to define the category order via JSON without having to hard-code the categories in navigator.json?

2. Is it possible to change the ImageCard to a 16x9 aspect ratio, instead of the 548x452 resolution?

Thanks!

Start by locating navigator.json and the ImageCard implementation, then trace how categories and card dimensions are currently defined. Confirm whether category ordering can come from JSON and whether the card can use a 16:9 aspect ratio; done means both requested configuration changes work in the Fire TV app.

Written by the indexing model from the issue text.