Dawn theme, move discount code to cart page

Topic summary

Main issue: Move the discount code entry from the checkout to the cart page in the Shopify Dawn theme.

Key points:

  • Native behavior: Discount codes can only be entered at checkout; the cart page supports only Automatic discounts (codes applied automatically by rules).
  • App-based solution: Multiple suggestions to use third‑party apps to add a discount field on the cart page (e.g., iCart; app search link provided). One app promo notes a 60‑day free trial and includes an illustrative image (not essential to the solution).

Custom code suggestions:

  • One participant proposes adding an input element named “discount” inside the cart form.
  • For Dawn, the file indicated for editing is main-cart-items.liquid.
  • No working code snippet was provided; follow‑up requests asked where to paste code and for a placement screenshot, leaving implementation details unclear.

Current status:

  • No confirmed, native theme modification shared.
  • Divergence between “not possible natively, use checkout/apps” and “try a custom input in cart form.”
  • Thread remains open with unresolved technical steps and unanswered placement specifics.
Summarized with AI on February 22. AI used: gpt-5.

What is the actual file name in the Dawn theme that I would modify with
that?