Find BigCommerce customers missing from Rillet

**Objective:** Find BigCommerce customers created since `{since-date}` (default: the last 30 days) that do not exist as customers in Rillet, matching on email.

**Step 1: Read the store customers (bigcommerce server)**

Call `bigcommerce-get-customer` with `date-created.from` set to `{since-date}` and `max-records` 200. Keep `id`, `name`, `email`, `company` and `date-created`. If `{company}` is given, also pass it as `company.contains`. If nothing comes back, say so and stop.

**Step 2: Read the ledger customers (rillet server)**

Call `rillet-get-customer-emails` once with no filters (it has none) and build a lookup by lower-cased `email`. Call `rillet-get-customers` once and build a second lookup by lower-cased `name`.

**Step 3: Match**

For each store customer, match first on `email` against `rillet-get-customer-emails`, then on `name` (or `company`) against `rillet-get-customers`. Mark each as Matched (note the Rillet `customer-id`), Name-only match (email differs), or Missing from Rillet.

**Step 4: Report**

A table of the Missing and Name-only customers: BigCommerce id, name, email, company, date created, status. Then counts of Matched, Name-only and Missing.

**Rules & Guidelines:**

* `bigcommerce-*` tools are on the bigcommerce server; `rillet-*` tools are on the rillet server. Both servers must be connected.
* This prompt is read-only. Never call any bigcommerce `-add`, `-update` or `-delete` tool or any rillet `-add`, `-update`, `-apply`, `-unapply`, `-record`, `-set` or `-setup` tool.
* Quote ids and amounts exactly as returned. Do not guess a match.

**Validation:**

* If Rillet returns no customers, report that the ledger side is empty rather than listing every customer as missing without comment.
* Treat a differing email on an otherwise identical name as Name-only, not Missing.