Honor Constant Contact opt outs in HubSpot too

**Objective:** Unsubscribe from the HubSpot subscription type `{subscription-name}` the people who have unsubscribed in Constant Contact in the last `{lookback-days}` days (default 30), after the user confirms, so HubSpot stops sending marketing email to people who opted out in Constant Contact.

**Step 1: Resolve the HubSpot subscription type**

Call `hubspot-get-subscriptions` with `name.contains` set to `{subscription-name}` and `active` set to true. Exactly one must match. If none or several match, list them (name, purpose, communication-method) and stop. Keep its `subscription-type-id` and `name`.

**Step 2: Unsubscribed people in Constant Contact**

Call `constant-contact-get-campaign-unsubscribe` with `created-date.from` set to today minus `{lookback-days}` days (30 if blank), as YYYY-MM-DD. Keep `email-address`, `first-name`, `last-name`, `created-date` and `reason`. If an address appears more than once, keep the most recent row.

**Step 3: Check each person in HubSpot**

For each distinct email address:

* Call `constant-contact-get-contact` with `email-address` set to the email. If its `permission-to-send` is now explicit or implicit, the person has opted back in: put them in "resubscribed in Constant Contact since" and leave them out.
* Call `hubspot-get-contact-subscriptions` with `recipient-email` set to the email. Find the row whose `subscription-id` equals the `subscription-type-id` from Step 1. If its `status` is not subscribed (NOT_SUBSCRIBED or equivalent), put the person in "already unsubscribed in HubSpot". If it is subscribed, or its value is unclear, put them in "will unsubscribe" and keep the raw status.
* If no row for that subscription comes back, call `hubspot-get-contacts` with `email` set to the email. If no contact comes back, put the person in "not in HubSpot". If a contact comes back, put them in "will unsubscribe" with HubSpot status "no record".

**Step 4: Confirm**

Show the subscription type name and id, then the groups: will unsubscribe (email, name, Constant Contact unsubscribe date or status, HubSpot current status), already unsubscribed in HubSpot (count), resubscribed in Constant Contact since (list), not in HubSpot (list). Ask the user to confirm the "will unsubscribe" group, or to name people to leave out. Do nothing more until they confirm.

**Step 5: Unsubscribe in HubSpot**

Only after confirmation, call `hubspot-unsubscribe-contact` once per confirmed person, with `email` set to their email and `subscription-id` set to the `subscription-type-id`. Do not send `legal-basis` unless a call fails asking for one; then stop, tell the user GDPR is on for the portal, and ask which legal basis to use before continuing.

**Step 6: Verify and report**

Call `hubspot-get-contact-subscriptions` again for up to 5 of the people you changed and show their new status (HubSpot can take a minute to update). Then the totals: unsubscribed, failed (with the error), already unsubscribed, resubscribed in Constant Contact since, not in HubSpot.

**Rules & Guidelines:**

* `constant-contact-get-campaign-unsubscribe` and `constant-contact-get-contact` are on the Constant Contact server; `hubspot-get-subscriptions`, `hubspot-get-contact-subscriptions`, `hubspot-get-contacts` and `hubspot-unsubscribe-contact` are on the hubspot server.
* `hubspot-unsubscribe-contact` is the only write tool this prompt may call, once per confirmed person, after Step 4. Do NOT call `hubspot-subscribe-contact`, and call no other hubspot-add, hubspot-update, hubspot-rename, hubspot-remove, hubspot-subscribe, hubspot-unsubscribe or hubspot-import tool.
* Constant Contact is read-only here. Do NOT call `constant-contact-add-contact`, `constant-contact-update-contact`, `constant-contact-add-contact-note`, `constant-contact-add-contact-list`, `constant-contact-update-contact-list`, `constant-contact-add-contact-tag`, `constant-contact-update-contact-tag`, `constant-contact-add-campaign`, `constant-contact-update-campaign` or `constant-contact-resend-campaign-to-non-openers`.
* This prompt only ever removes consent. Never subscribe or resubscribe anyone in either system.
* Match on email address only, compared case-insensitively with surrounding spaces trimmed. Never match on name alone.

**Validation:**

* If Constant Contact returns no unsubscribed people, say so and stop.
* If everyone is already unsubscribed in HubSpot, resubscribed since, or not in HubSpot, report the counts and stop without asking for confirmation.
* If one unsubscribe call fails, report it with the error and continue with the rest.