See what is being refunded in Shopify, and why

**Objective:** Summarize the refunds issued in the last `{lookback-days}` days (default 30): how much, on which products, whether stock went back, and which customers refund repeatedly.

**Step 1: Pull the refunds**

Call `shopify-get-refund` filtered by `created-at.from` (today minus the lookback). Keep refund-id, order-id, order-name, customer-id, customer-email, restock, note, total-adjustments and created-at.

**Step 2: Pull the refunded lines and adjustments**

* For each refund, call `shopify-get-refund-line` filtered by `order-refund-id` set to the refund-id. Keep sku, name, quantity, subtotal, total-tax, restock-type and location-id.
* For each refund, call `shopify-get-order-adjustment` filtered by `refund-id` for shipping and other adjustments (kind, amount, reason).
* For the refunded orders, call `shopify-get-order` filtered by `order-id` for the order total, so you can tell full refunds from partial ones.

**Step 3: Report**

* Totals: refund count, orders affected, value refunded (line subtotal plus tax plus adjustments), full versus partial refunds
* Top 10 refunded products by value: sku, name, quantity refunded, value, and the share restocked versus not restocked (by restock-type)
* Adjustments: totals by kind and reason
* Repeat refunders: customers with 2 or more refunds in the window, with count and value
* Notes: common themes in the refund note field, quoted briefly, only where several refunds share one

**Rules & Guidelines:**

* This prompt is read-only. Do not call `shopify-update-order`, `shopify-update-product`, `shopify-add-inventory-level` or any other add or update tool.
* A repeat refunder is a pattern to look at, not an accusation. Word it that way.
* If there are more than 100 refunds, sample the refund lines for the 100 most recent and say so.

**Validation:**

* If no refunds were issued in the window, say so and stop.
* If a refund has no refund lines, count it as an adjustment-only refund rather than dropping it.