Record a Shopify order in Sage Intacct, never twice

**Objective:** Record Shopify order `{order-name}` in Intacct as a `{transaction-type}` document (default Sales Invoice) for Intacct customer `{intacct-customer-id}` (default: found from the order), after confirming it has not been posted already. Write nothing without the user's confirmation.

**Step 1: Read the Shopify order**

Call `shopify-get-order` with `name` = `{order-name}`; if nothing matches and the value is numeric, retry with `order-number`. If it matches more than one order, list them and stop. If the order has a `cancelled-at` value, report that and stop. Keep `order-id`, `name`, `created-at`, `email`, `customer-id`, customer first and last name, `total-price`, `total-tax` and `currency`.

Call `shopify-get-order-line` with `order-id` and keep each line's `sku`, `title`, `quantity` and `price`.

**Step 2: Check it is not already in Intacct**

Call `intacct-get-invoice` and `intacct-get-order-entry-document` with date ranges covering the order date to 30 days after it. If any document's `reference-number` or `customer-po-number` equals the order name or number (ignoring a leading `#`), report that document and stop.

**Step 3: Find the Intacct customer**

If `{intacct-customer-id}` is set, call `intacct-get-customer` with `customer-id` = it and use it. Otherwise try, in order, and stop at the first single match:

1. B2B: `shopify-get-company-contact` with `customer-email` = the order email; if it returns a `company-id`, call `shopify-get-company` with it and use its `external-id` as the Intacct customer-id.
2. `intacct-get-contact` with `email` = the order email, then `intacct-get-customer` with `customer-name` = the contact's `company-name`.
3. `intacct-get-customer` with `customer-name` = the order's customer first and last name.

If nothing matches, or a step matches several customers, list what you found and ask the user for the Intacct customer-id. Never create a customer from this prompt.

**Step 4: Match the items**

For each order line, call `intacct-get-item` with `item-id` = the line `sku`. Every line must resolve to exactly one Intacct item. If a line has no SKU or no matching item, list it and stop.

`intacct-create-order-entry-document` accepts at most two lines. If the order has more than two lines after matching, report that it cannot be posted by this tool and stop. Do not merge or drop lines.

**Step 5: Confirm, then post**

Show the user: customer id and name, transaction type (`{transaction-type}`, default Sales Invoice), date (the order's created date), reference number (the order name), each line's item-id, quantity and unit price, and the document total against the Shopify total. Say plainly that Shopify tax, shipping and discounts are not carried across by this tool, so the totals may differ by those amounts.

Only after a yes, call `intacct-create-order-entry-document` once with `customer-id`, `transaction-type`, `date`, `reference-number` = the order name, `customer-po-number` = the order name, `item-id`, `quantity`, `price` and, for a second line, `item-id-2`, `quantity-2` and `price-2`. Leave `state` unset so Intacct applies its default.

**Step 6: Confirm**

Report the returned `document-id`, then call `intacct-get-order-entry-document` with `document-id` and show its total and state.

**Rules & Guidelines:**

* `shopify-get-order`, `shopify-get-order-line`, `shopify-get-company-contact` and `shopify-get-company` are on the shopify server. `intacct-get-invoice`, `intacct-get-order-entry-document`, `intacct-get-customer`, `intacct-get-contact`, `intacct-get-item` and `intacct-create-order-entry-document` are on the intacct server.
* The only write tool this prompt may call is `intacct-create-order-entry-document`, once, after confirmation. Do NOT call `intacct-create-customer`, `intacct-update-order-entry-document`, `shopify-update-order` or any other write tool.
* If the user does not know the transaction type, read recent documents with `intacct-get-order-entry-document` and offer the `transaction-type` values in use.

**Validation:**

* If the order currency differs from the customer's Intacct currency, stop and ask the user how to proceed.
* If the create call fails, show the error, do not retry with changed values, and stop.