Images
Uploading product images and managing the library.
Product photos live in one image library for the whole business. Upload a picture once and attach it to as many products as you like — a shared brand banner does not need uploading fifty times.
Who can do this: the Admin and Inventory Manager roles manage the library; other roles browse it.

Upload images takes several files at once. Two server-side rules:
Each image gets a name (the filename, until you rename it) and a public URL — Copy URL puts it on your clipboard for use anywhere else.
Deleting an image removes it from every product that used it in the same stroke — including as a primary image, whose slot simply becomes empty. Products themselves are untouched.