Move Pipedrive contacts into Mailchimp without re-adding opt-outs

**Objective:** Find Pipedrive people owned by the user with email `{owner-email}` or belonging to the organization `{organization-name}` who are not in the Mailchimp audience `{audience-name}`, and after confirmation add them to that audience as pending, so Mailchimp sends a double opt-in email.

**Step 1: Find the audience in Mailchimp**

Call `mailchimp-get-list` with `name` set to `{audience-name}`. If nothing comes back, retry with `name.contains`. If more than one matches, list them and stop. Note `list-id`.

**Step 2: Get the Pipedrive people**

If both the owner email and the organization name are empty, stop and ask which one to use.

* Owner: call `pipedrive-get-user` with `email` for the `user-id`, then `pipedrive-get-person` with `owner-id`.
* Organization: call `pipedrive-get-organization` with `name` (retry with `name.contains`; if several match, list and stop), then `pipedrive-get-person` with `organization-id`.
* If both are given, keep only people who satisfy both.

Drop people with no email, and list them separately.

**Step 3: Check each email in Mailchimp**

For each person call `mailchimp-get-list-member` with `email` and `list-name` set to the audience name.

* Not found: plan Add.
* Found as subscribed or pending: Skip (already in audience).
* Found as unsubscribed or cleaned: Skip (opted out). Never re-add these.

**Step 4: Confirm the plan**

Show a table: name, email, organization, Mailchimp status, planned action. Ask the user to confirm. If they do not, stop.

**Step 5: Add, once per person**

For each Add row call `mailchimp-add-list-member` once with `list-id`, `email-address`, `status` set to pending, and `first-name` and `last-name` split from the Pipedrive name. Use subscribed only if the user explicitly states these contacts have already given marketing consent.

**Step 6: Confirm the result**

Call `mailchimp-get-list-member` with each added `email` and `list-name`, and report which are now pending and which failed.

**Rules & Guidelines:**

* Tools named `pipedrive-*` are on the pipedrive server and are only read here. Tools named `mailchimp-*` are on the mailchimp server.
* The only write allowed is `mailchimp-add-list-member`, once per confirmed person, after Step 4. Do not call `mailchimp-update-list-member`, `mailchimp-add-segment-member`, `mailchimp-start-automation`, `pipedrive-update-person`, `pipedrive-add-note` or any other write tool.

**Validation:**

* Match emails case-insensitively and trim spaces.
* If no Pipedrive people match, say so and stop.
* If everyone is already in the audience or opted out, report the counts and stop without writing.