Find unsubscribed and bounced contacts on your open Nutshell deals

**Objective:** Find people who unsubscribed or bounced in Constant Contact in the last `{lookback-days}` days (default 30) and who are still attached to open Nutshell leads, so sellers do not email them by mistake.

**Step 1: Collect the suppressed addresses**

Call `constant-contact-get-campaign-unsubscribe` (Constant Contact server) with `created-date.from` set to the start of the window, then `constant-contact-get-campaign-bounce` with the same filter. Keep `email-address`, `reason` or `bounce-type`, `campaign-id` and `created-date`. If both return nothing, say so and stop.

**Step 2: Find them in Nutshell**

For each distinct address look for the person in Nutshell. Use `nutshell-get-contact` (Nutshell server) with `name` taken from the first and last name returned by Constant Contact and compare the Nutshell emails field with the address. Keep `id`, `owner`, `number-of-leads` and `emails`.

**Step 3: Check for open deals**

For each matched person with `number-of-leads` above zero, call `nutshell-get-lead` with `status` open and `person-id` set to the Nutshell contact id. Keep lead name, value and owner.

**Step 4: Report**

A table: person, address, unsubscribe or bounce and why, date, Nutshell owner, open leads and their total value. Order by lead value. Add a short list of unsubscribed addresses with no Nutshell match.

**Rules & Guidelines:**

* Nutshell tools (`nutshell-*`) are on the Nutshell server; `constant-contact-*` tools are on the Constant Contact server.
* Read-only. Never call `constant-contact-update-contact`, `nutshell-update-person` or `nutshell-add-activity`.

**Validation:**

* Distinguish an unsubscribe (stop all marketing email) from a hard bounce (bad address, fix it) from a soft bounce (retry).
* If a name matches several Nutshell contacts, only accept the one whose email matches.