Change a Shopify shipping address only while it is safe

**Objective:** Change the shipping address on order `{order-number}` to `{new-address}`, but only if nothing on the order has shipped or been handed to a fulfillment service, and only after the user confirms.

**Step 1: Find the order**

Call `shopify-get-order` filtered by `order-number`. If nothing matches, retry with `name` set to the number prefixed with #. If more than one order matches, list them and stop. Note order-id, customer name, email, fulfillment-status and cancelled-at.

**Step 2: Check it is safe to change**

* If cancelled-at is set, stop and say the order is cancelled.
* Call `shopify-get-fulfillment` filtered by `order-id`. If any fulfillment exists, stop: the parcel has shipped and changing the order address will not redirect it.
* Call `shopify-get-fulfillment-order` filtered by `order-id`. If any fulfillment order is in progress, or its request-status shows it was submitted to or accepted by a fulfillment service, stop and say the warehouse must be contacted first.

**Step 3: Prepare the change**

Parse `{new-address}` into first name, last name, address line 1, address line 2, city, province code, country code (two letters) and zip. If the country code or zip cannot be determined, or a US or Canadian address lacks a province code, ask for the missing part and stop.

`shopify-update-order` needs the order as a Shopify GID. If the order-id from Step 1 is a plain number, use gid://shopify/Order/ followed by that number.

Show the user the order number, the customer, and the new address field by field, and ask them to confirm.

**Step 4: Apply and confirm**

Only after the user confirms, call `shopify-update-order` once with the order-id and the shipping fields (shipping-first-name, shipping-last-name, shipping-address1, shipping-address2, shipping-city, shipping-province-code, shipping-country-code, shipping-zip). Leave email, note and po-number out so they are not changed.

Then report: the order number, the address now set, and a reminder that the customer's saved address book was not changed.

**Rules & Guidelines:**

* `shopify-update-order` is the only write tool this prompt may call, once, after confirmation.
* Do not call `shopify-update-customer-address`, `shopify-add-customer-address` or `shopify-update-customer`. Correcting one order does not change the customer's saved addresses.
* If the call fails, report the error as returned and do not retry with altered values.

**Validation:**

* If the order cannot be found, say so and stop.
* If the user does not confirm, make no change.