I have Shopify theme CLI running. I've added a new JSON template. Is there a way to assign that template to a new page without pushing code to the repo?When you ran theme serve you've got the "reflection" of your current theme, and when you try to assign a new template to a new page it doesn't exist.
Have you tried using the Customiser and selecting the template from there? The new templates should appear there?
Let me know if that works