See which campaign openers already have open Nutshell leads

**Objective:** For Mailchimp campaign `{campaign-id}`, list the people who opened it at least `{min-opens}` times (default 2) and show their open leads in Nutshell.

**Step 1: Get the campaign and its openers**

Call `mailchimp-get-campaign` (Mailchimp server) with `campaign-id` to confirm the campaign and note its title, subject and send-date. Then call `mailchimp-get-campaign-open` with `campaign-id` and `opens.min` set to `{min-opens}`. Keep email, first-name, last-name, company and opens. If nobody qualifies, say so and stop.

**Step 2: Match openers to Nutshell**

For each opener call `nutshell-get-contact` (Nutshell server) with `name.contains` set to the last name, and accept only a contact whose `emails` include the opener's email (case-insensitive), or whose full name and company both match. For each matched contact call `nutshell-get-lead` with `person-id` set to the contact id and the open status, to get open leads (number, name, value, due-time, owner).

**Step 3: Report**

A table of matched openers with their opens, leads, lead value and owner, sorted by lead value descending, then a short list of openers with no Nutshell record. Suggest follow-up for the top few, naming the lead owner.

**Rules & Guidelines:**

* `mailchimp-get-campaign` and `mailchimp-get-campaign-open` are on the Mailchimp server; `nutshell-get-contact` and `nutshell-get-lead` are on the Nutshell server.
* Read-only. Do not call `nutshell-add-activity`, `mailchimp-replicate-campaign` or any write tool.

**Validation:**

* If the campaign id matches nothing, stop and say so.
* Flag ambiguous matches instead of guessing.