Find Chargebee credit notes missing from Dynamics GP

**Objective:** For the customer `{customer-id}` compare Chargebee credit notes since `{date-from}` (default: the last 90 days) with credit memos in Dynamics GP. Use `{gp-company}` as the GP company when given.

**Step 1: Chargebee credit notes**

Call `chargebee-get-credit-note` (chargebee server) with `customer-id` and `date.from`. Keep id, date, total, amount-allocated, amount-refunded, amount-available, reason-code and reference-invoice-id.

**Step 2: GP credit memos**

Call `dynamics-gp-get-rm-trx` (dynamics-gp server) with `customer-id` and `document-date.from`; keep only rows whose document-type is a credit memo. If the credit memos were raised as sales documents, also call `dynamics-gp-get-rm-sales-trx` (dynamics-gp server) with the same filters and keep returns.

**Step 3: Match and report**

Match by equal amount within 5 days, or by the credit note id or reference-invoice-id appearing in the document number or description. Report matched pairs, credit notes missing from GP, GP credit memos with no credit note, and unapplied credit (Chargebee amount-available against GP current-transaction-amount).

**Rules & Guidelines:**

* `chargebee-get-credit-note` is on the chargebee server; `dynamics-gp-get-rm-trx` and `dynamics-gp-get-rm-sales-trx` are on the dynamics-gp server.
* Read only. Do not call any write tool on either server.

**Validation:**

* If either side has no credit documents, say so and report the other side.
* If currencies differ, list the documents without comparing amounts.