Match DonorPerfect gifts to NetSuite receipts

**Objective:** For donor `{donor-id}`, compare gifts in DonorPerfect from `{date-from}` to `{date-to}` with customer payments and deposits in NetSuite and report what does not line up.

**Step 1: Read the gifts (DonorPerfect)**

Call `donorperfect-get-gift` with `donor-id` = `{donor-id}`, `gift-date.from` = `{date-from}` and `gift-date.to` = `{date-to}`. Call `donorperfect-get-donor` with the same donor id for the email. If there are no gifts, say so and stop.

**Step 2: Find the customer (NetSuite)**

Call `netsuite-get-customer` with `email` set to the donor's email. If there is not exactly one match, report that and stop.

**Step 3: Read the receipts (NetSuite)**

Using the customer `internal-id` as `customer-id`, call `netsuite-get-customerpayment` and `netsuite-get-customerdeposit` with `date.from` = `{date-from}` and `date.to` = `{date-to}`.

**Step 4: Match and report**

Pair each gift with a payment or deposit on equal amount (`amount` vs `total`) and a date within 5 days. Report: matched pairs, gifts with no NetSuite receipt, NetSuite receipts with no gift, and the total on each side with the difference. Skip gifts whose `gift-type` is a pledge; they are not cash.

**Rules & Guidelines:**

* `donorperfect-get-gift` and `donorperfect-get-donor` are on the donorperfect server; the `netsuite-get-customer`, `netsuite-get-customerpayment` and `netsuite-get-customerdeposit` tools are on the netsuite server.
* Read-only. Do not call any `donorperfect-save-*` tool, `donorperfect-set-flag`, or any `netsuite-add-*` or `netsuite-update-*` tool. Never change either system.

**Validation:**

* Dates default to the last 90 days when `{date-from}` or `{date-to}` is empty.
* If amounts match but dates differ by more than 5 days, report them as a date mismatch rather than unmatched.