Compare Chargebee subscriptions to Intacct recurring invoices

**Objective:** For Chargebee customer `{chargebee-customer-id}`, compare active subscriptions in Chargebee with recurring invoices in Intacct and report gaps in amount, frequency or existence.

**Step 1: Chargebee subscriptions**

Call `chargebee-get-subscription` (Chargebee server) with `customer-id` and `status` active. Record id, MRR, billing period unit and next billing date. Call `chargebee-get-customer` (Chargebee server) with `id` for the company name.

**Step 2: Intacct recurring invoices**

Resolve the Intacct customer with `intacct-get-customer` (Intacct server) using `{intacct-customer-id}` if supplied, otherwise `customer-name.contains` set to the company name. Then call `intacct-get-recurring-invoice` (Intacct server) with that `customer-id` and `status` active.

**Step 3: Report**

Compare the combined Chargebee MRR with the Intacct recurring amounts normalized to monthly, using `frequency`. Report: subscriptions with no Intacct recurring invoice, Intacct schedules with no active subscription, and amount or frequency differences. Note that Intacct may legitimately invoice from Chargebee invoices rather than schedules, so label an empty Intacct result as "no recurring schedule" rather than an error.

**Rules & Guidelines:**

* `chargebee-get-subscription` and `chargebee-get-customer` are Chargebee tools; `intacct-get-customer` and `intacct-get-recurring-invoice` are Intacct tools.
* Read-only. Never call `intacct-create-order-entry-document` or any Intacct create or update tool.

**Validation:**

* If the customer cannot be matched in Intacct, stop after step 1 and report the Chargebee subscriptions with that note.
* Keep currencies separate.