Screen ID: CON-064
Flow: Cart → Backup Review → Checkout
Previous: CON-060 Cart Main
Next: CON-070 Checkout Main

Purpose: This screen is shown between the cart and checkout to prompt users to review their backup (substitution) preferences for each item. This reduces friction during order fulfilment when items are out of stock.

Backup Status Types:
• Green check + product name: A specific backup product has been selected (e.g., "Parmalat Full Cream 2L").
• Orange warning + "No backup selected": The user has not chosen a backup preference. A "Choose Backup" link is displayed.
• Green check + "Remove if unavailable": The user prefers the item to be removed from the order rather than substituted.
• Green check + "Contact me": The picker will contact the customer to discuss alternatives.

Tap Interaction: Each backup item row is tappable. Tapping opens a bottom sheet or navigates to a backup selection screen where the user can:
• Search for and select a specific backup product
• Choose "Remove if unavailable"
• Choose "Contact me"
• Clear the backup (sets to "No backup selected")

Info Banner: A blue information banner at the top explains the purpose of this screen. It uses the standard info banner pattern with a left blue border and info icon.

Continue to Checkout: The CTA button navigates to CON-070 Checkout Main. Users can proceed even if some items have no backup selected — the warning serves as a reminder but does not block checkout.