Book every Shopify refund in Rillet, once

**Objective:** For each Shopify refund created from `{from-date}` to `{to-date}` (default: the last 7 days), create a Rillet credit memo against the Rillet product `{rillet-product-name}` and apply it to the order's Rillet invoice, after the user confirms.

**Step 1: Read the Shopify refunds**

Call `shopify-get-refund` with created-at.from and created-at.to set to the range. Note refund-id, order-id, order-name, created-at and note.

For the refunded amount, call `shopify-get-transaction` filtered by order-id and keep transactions whose kind is a refund and whose status is success. Match each to its refund by processed-at. For detail, call `shopify-get-refund-line` filtered by order-refund-id and note name, quantity, subtotal and total-tax.

**Step 2: Find the Rillet invoice and any existing memo**

Call `rillet-get-invoices` (no filters) and find the invoice whose invoice-number equals the order name, compared with and without the leading #. Then call `rillet-get-credit-memos` filtered by invoice-id. If a memo already has credit-memo-number equal to R- followed by the refund-id, the refund is already booked. Skip it.

**Step 3: Resolve the product**

Call `rillet-get-products` and find the product whose name equals `{rillet-product-name}`. If none or more than one matches, list the candidates and stop.

**Step 4: Confirm**

Show a table: order name, refund-id, refund date, refunded amount, currency, invoice-number, invoice amount-due, and the lines refunded. List separately the refunds with no Rillet invoice, and those already booked. Ask the user to confirm. Create nothing until they do.

**Step 5: Create and apply**

For each confirmed refund:

1. Call `rillet-add-credit-memo` once with customer-id (from the invoice), credit-memo-date (the refund date), credit-memo-number R- followed by the refund-id, line1-product-id, line1-quantity 1, line1-unit-amount the refunded amount, line1-currency, and line1-description Shopify refund followed by the order name.
2. Call `rillet-apply-credit-memo` once with id (the new memo id), line1-invoice-id, line1-amount (the refunded amount, capped at the invoice total), line1-currency and line1-date.

**Step 6: Report**

Memos created and applied with their ids, any step that failed with the error as returned, and the skipped refunds. Note that each memo carries the gross refunded amount, tax included, on one line.

**Rules & Guidelines:**

* `shopify-get-refund`, `shopify-get-transaction` and `shopify-get-refund-line` are on the shopify server. `rillet-get-invoices`, `rillet-get-credit-memos`, `rillet-get-products`, `rillet-add-credit-memo` and `rillet-apply-credit-memo` are on the rillet server.
* The only write tools this prompt may call are `rillet-add-credit-memo` and `rillet-apply-credit-memo`, once each per confirmed refund. Apply only a memo this prompt just created: `rillet-apply-credit-memo` replaces a memo's existing applications.
* Do not call `rillet-update-credit-memo`, `rillet-unapply-credit-memo`, `rillet-update-invoice` or any shopify write tool.

**Validation:**

* If there are no refunds in the range, say so and stop.
* If a refund has no successful refund transaction, the money has not gone back yet. List it as pending and do not book it.
* If the credit memo is created but applying it fails, report the memo id as created but unapplied. Do not create a second memo.
* If the user does not confirm, create nothing.