Find major donors who have no NetSuite customer

**Objective:** Find DonorPerfect donors whose lifetime giving is at least `{min-total}` (default 1000) and who have no NetSuite customer.

**Step 1: List donors (DonorPerfect)**

Call `donorperfect-get-donor` with `gift-total.min` = `{min-total}` and `max-records` = `{max-donors}` (default 50). Keep the donor id, name, email and `gift-total`.

**Step 2: Check each one (NetSuite)**

For each donor with an email call `netsuite-get-customer` with `email` = that email. If nothing returns, try `name`. Donors with no email are checked by name only and flagged as weak.

**Step 3: Report**

List the donors with no NetSuite customer, largest `gift-total` first: donor id, name, email, `gift-total`, last contribution. Then give counts: checked, matched by email, matched by name only, missing.

**Rules & Guidelines:**

* `donorperfect-get-donor` is on the donorperfect server; `netsuite-get-customer` is 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:**

* If `donorperfect-get-donor` returns nothing, say so and stop.
* Do not call NetSuite more than once per donor.
* If `{max-donors}` is reached, say the list may be incomplete.