See which customers are growing, slipping or gone

**Objective:** Compare net sales by customer for `{from-date}` (default the first day of this quarter) to `{to-date}` (default today) against `{compare-to}` (prior = the equal-length period just before; last-year = the same dates a year earlier; default last-year).

Pass `{company}` as `company` on every call (if it is empty, omit `company` and the default company is used). Pass a generous `max-records` (1000). If a result comes back with exactly that many rows, say the result may be truncated.

**Step 1: Both periods**

Call `dynamics-gp-get-rm-sales-trx` twice, once for each period with `document-date.from` and `document-date.to`. Net sales per `customer-id` = invoices minus returns (by `sop-type`), using `subtotal` so tax and freight do not distort it. Ignore quotes and orders.

**Step 2: Classify**

* New: sales now, none in the comparison period.
* Lapsed: sales in the comparison period, none now.
* Growing or shrinking: change in amount and percent.

**Step 3: Lapsed context**

For the ten largest lapsed customers, call `dynamics-gp-get-rm-customer` by `customer-id` for `hold`, `inactive`, `salesperson-id` and contact, since a hold or inactive flag often explains a lapse.

**Step 4: Report**

Headline totals for both periods and the change. Then: top 10 growing, top 10 shrinking, new customers, lapsed customers with context, and the share of total sales from the top 10 customers in each period.

**Rules & Guidelines:**

* This prompt is read-only. Do not call any tool whose name does not contain `get` (no add, update, note or email tools).

**Validation:**

* If `{compare-to}` is neither prior nor last-year, use last-year and say so.
* If either period has no sales, say so and report the other alone.