Run action opens a form built from the action's params

Run action in Files now opens a drawer beside the editor instead of a JSON box above it. Its params are a form built from the file's export const params, each field typed like the record form in Data, or JSON with completion from the same params, as in Playground; switching keeps what you typed. A model action picks its record from the model's newest or by search, a Shopify app's run can go as one of its installed stores, and the last run's answer stays in the drawer with the call as SDK code.