See a customer's orders and GP balance together

**Objective:** For the customer named or emailed as `{customer}`, combine store order history with GP account standing for company `{company}`, looking back `{lookback-days}` days (default 90).

**Step 1: Find the store customer (bigcommerce server)**

If `{customer}` contains `@`, call `bigcommerce-get-customer` with `email`. Otherwise call it with `name.contains`. If more than one customer matches, list them (id, name, email, company) and stop.

**Step 2: Store orders (bigcommerce server)**

Call `bigcommerce-get-order` with `customer-id` from Step 1 and `date-created.from` set to the start of the window. Keep `id`, `date-created`, `status`, `total-including-tax`, `refunded-amount`.

**Step 3: Find the GP customer (powergp-online-ai server)**

GP has no email field, so match on name. Call `powergp-online-get-customers` with `company` set to `{company}` and `customer-name.contains` set to the store customer `company` value, or the full name if there is no company. If more than one matches, list them and stop. If none matches, report the customer as store-only and skip Step 4.

**Step 4: GP standing**

Using the GP `customer-number`, call `powergp-online-get-customers` for `balance-due`, and `powergp-online-get-receivablestransactions` for open items (`document-number`, `due-date`, `days-past-due`, `unapplied-amount`).

**Step 5: Report**

Sections: identity (both systems), store orders (count, total, refunds), GP balance and overdue items, and one line noting any concern such as a high overdue balance while still ordering online.

**Rules & Guidelines:**

* `powergp-online-*` tools belong to the powergp-online-ai server (Dynamics GP). `bigcommerce-*` tools belong to the bigcommerce server (online store). Both servers and this prompt server must be connected.
* This prompt is read-only. Call only `get` tools. Never call any `bigcommerce-*-add`, `bigcommerce-*-update` or `bigcommerce-*-delete` tool.
* Query only the GP company given in `{company}`; never mix companies.
* Show at most 25 rows per table and say how many more there are.

**Validation:**

* State the name-based match as a match by name, not a confirmed identity.
* If the store has no orders in the window, say so and still report GP standing.