How are the JS files bound to the ERB files? That is, how does

backend/app/view/spree/admin/orders/line_items.html.erb

know to render

backend/app/assets/javascripts/spree/backend/orders/cart.js

as the table content?

Can’t check the specifics right now, but old school jquery files usually rely on the JS using some kind of selector. Stimulus and other frameworks use other means, like custom attributes. Please let me know if this answers your question 👍