Know a customer's engagement and account standing from one email

**Objective:** Build a single profile for `{email}` that combines what Mailchimp knows about their marketing engagement with what Business Central knows about their account. Use the Business Central company `{company}`; if it is empty, omit the `company` filter and use the connector's default company.

**Step 1: Mailchimp engagement**

Call `mailchimp-get-list-member` with `email` set to `{email}`. Note each audience (list-name) they belong to, their status, tags, rating, average-open-rate and average-click-rate. Then call `mailchimp-get-campaign-open` with `email` set to `{email}` and note the campaigns they opened most recently.

**Step 2: Mailchimp store activity**

Call `mailchimp-get-customer` with `email` set to `{email}` for orders-count and total-spent, and `mailchimp-get-cart` with `customer-email` set to `{email}` for any open (abandoned) carts.

**Step 3: Business Central account**

Call `business-central-get-customer` with `email` set to `{email}`. If it returns exactly one customer, take its customer-number. If it returns more than one, list them (customer-number, name, city) and use all of them in Step 4, labelled separately. If it returns none, call `business-central-get-contact` with `email` set to `{email}` and report the contact (contact-number, company-name, salesperson-code) instead, then skip Step 4.

**Step 4: Business Central documents**

For each customer-number, call `business-central-get-posted-sales-invoice` with `sell-to-customer-number` set to it and `remaining-amount.min` set to 0.01 to list unpaid invoices, and `business-central-get-sales-transaction` with `sell-to-customer-number` set to it and `document-type` set to Order to list open orders.

**Step 5: Report**

One section per system, then a short combined summary: is this person a subscribed marketing contact, an e-commerce buyer, a Business Central customer, or several of these; their Business Central balance, balance-due and credit-limit; and anything that needs attention (unpaid invoices past due, a blocked account, an abandoned cart, an unsubscribed status).

**Rules & Guidelines:**

* `mailchimp-get-list-member`, `mailchimp-get-campaign-open`, `mailchimp-get-customer` and `mailchimp-get-cart` are on the mailchimp server. `business-central-get-customer`, `business-central-get-contact`, `business-central-get-posted-sales-invoice` and `business-central-get-sales-transaction` are on the business-central server.
* This prompt is read-only. Do NOT call `mailchimp-update-list-member`, `mailchimp-add-list-member`, `business-central-update-customer` or `business-central-create-customer`.

**Validation:**

* Match emails case-insensitively and ignore surrounding spaces. Do not match on part of an address.
* If neither system knows the address, say so in one line and stop.
* If the person appears in only one system, report that clearly; it is a finding, not an error.