Reconcile a vendor's Ramp bills with Intacct

**Objective:** Reconcile bills for vendor `{vendor-name}` between Ramp and Intacct, covering bills due in the last `{lookback-days}` days (default 60), and report every disagreement.

**Step 1: Read the Ramp bills**

Call `ramp-get-bill` (Ramp server) with `vendor-name` set to `{vendor-name}` and `due-date.from` set to today minus the lookback. If the vendor name matches nothing, retry once with `vendor-name.contains`. Note for each bill: invoice-number, amount, currency-code, due-date, approval-status, payment-status.

**Step 2: Read the Intacct bills**

Call `intacct-get-bill` (Intacct server) with `vendor-name.contains` set to `{vendor-name}` and `due-date.from` set to the same date. Note bill-number, total-amount, total-due, state, due-date.

**Step 3: Match and compare**

Match on Ramp invoice-number equal to Intacct bill-number (also try reference-number, ignoring case and leading zeros). For each pair compare amount against total-amount, due-date, and payment state (Ramp payment-status against Intacct total-due and state).

**Step 4: Report**

Three lists: bills in Ramp only, bills in Intacct only, and matched bills with a difference (show both values). End with counts and the total amount at stake.

**Rules & Guidelines:**

* `ramp-get-bill` is on the Ramp server; `intacct-get-bill` is on the Intacct server.
* Read-only. Do not call any Ramp or Intacct create, update, add or delete tool.

**Validation:**

* If either side returns no bills, say which side is empty and stop the comparison.
* If the currencies differ, report the pair as a currency mismatch rather than comparing amounts.