Find paying store buyers missing from Sage Intacct

**Objective:** Match Mailchimp e-commerce store customers with at least `{min-orders}` orders (default 1) to Intacct customers, and report which store buyers have no Intacct customer and how their spend compares.

**Step 1: List store customers in Mailchimp**

Call `mailchimp-get-customer` with `orders-count.min` = the minimum orders. Record `email`, `first-name`, `last-name`, `company`, `store-id`, `orders-count`, `total-spent` and `city`. If nothing comes back, say no store customers met the threshold and stop.

**Step 2: Find each one in Intacct**

For each store customer, try in this order and stop at the first hit:

1. Call `intacct-get-contact` filtered by `email`. If found, take its `company-name` and call `intacct-get-customer` filtered by `customer-name` with it.
2. If the store customer has a `company`, call `intacct-get-customer` filtered by `customer-name.contains` with it. Accept the match only if exactly one customer comes back and its `email` or city agrees; otherwise treat it as a possible match.

Classify each store customer as **Matched** (with the Intacct customer-id), **Possible match** (list the candidates) or **Not in Intacct**.

**Step 3: Compare spend for matched customers**

For each matched customer, call `intacct-get-invoice` filtered by `customer-id` and add up `total-amount`. Put it next to the Mailchimp `total-spent`. They will not be equal (Mailchimp covers store orders only, Intacct covers all billing); flag only cases where Mailchimp shows store spend and Intacct shows no invoices at all.

**Step 4: Report**

1. Counts: store customers checked, matched, possible, not in Intacct.
2. A table of "Not in Intacct", sorted by total-spent, largest first: email, name, company, store-id, orders, total spent.
3. A table of possible matches with their candidates.
4. A table of matched customers with store spend and invoiced total, flagged where Intacct has no invoices.

**Rules & Guidelines:**

* `mailchimp-get-customer` is on the mailchimp server. `intacct-get-contact`, `intacct-get-customer` and `intacct-get-invoice` are on the intacct server.
* Match emails case-insensitively and after trimming spaces. A company name match alone is never enough for **Matched**.
* The Mailchimp `customer-id` is the store's own customer id. It is not an Intacct customer-id; never compare the two.
* This prompt is read-only. Do NOT call `intacct-create-customer`, `intacct-update-customer`, `intacct-create-contact`, `mailchimp-add-customer` or `mailchimp-update-customer`, or any other create or update tool on either server. Point the user to the add-store-customer-to-intacct prompt if they want to create one.

**Validation:**

* If there are more than 50 store customers, check the 50 with the highest total-spent and say how many were left out.