Spot do-not-email contacts on your open Nutshell leads

**Objective:** For open leads owned by `{owner}` in Nutshell, find contacts who are unsubscribed, cleaned or never subscribed in Mailchimp. Look at no more than `{max-leads}` leads (default 25).

**Step 1: List the open leads**

Call `nutshell-get-lead` (Nutshell server) with `owner.contains` set to `{owner}`, `status` set to open (use the value the tool accepts for open leads) and `max-records` set to `{max-leads}`. Keep each lead's number, name, value, company-id and people. If none, say so and stop.

**Step 2: Collect contacts and emails**

For each lead call `nutshell-get-contact` (Nutshell server) with `company-id`, or by `name` for each listed person, to collect emails. De-duplicate contacts that appear on several leads, and remember which leads each contact belongs to.

**Step 3: Check Mailchimp status**

For each unique email call `mailchimp-get-list-member` (Mailchimp server) with `email`. Classify: subscribed, unsubscribed, cleaned, pending, or not found. Compare case-insensitively. For unsubscribed contacts, also call `mailchimp-get-campaign-unsubscribe` with `email` to find the campaign and reason.

**Step 4: Report**

First the risk list: contacts who are unsubscribed or cleaned, with their leads, value and unsubscribe reason. Then contacts not found in Mailchimp, then the count of contacts that are safely subscribed. End with the total lead value affected.

**Rules & Guidelines:**

* Nutshell tools: `nutshell-get-lead`, `nutshell-get-contact`. Mailchimp tools: `mailchimp-get-list-member`, `mailchimp-get-campaign-unsubscribe`.
* Read-only. Do not call `mailchimp-update-list-member`, `mailchimp-add-list-member`, `nutshell-update-person` or any other write tool.

**Validation:**

* Contacts with no email are listed separately, not counted as safe.
* If the lead count hits `{max-leads}`, say the list may be truncated.