Honor Drip opt outs in HubSpot too

**Objective:** Unsubscribe from the HubSpot subscription type `{subscription-name}` the people who have unsubscribed in Drip (checking up to `{max-records}` (default 50) unsubscribed Drip subscribers), after the user confirms, so HubSpot stops sending marketing email to people who opted out in Drip.

**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 Drip**

Call `drip-get-subscriber` with `status` set to unsubscribed and `max-records` set to `{max-records}` (50 if blank). Keep `email`, `first-name`, `last-name`, `status` and `gdpr-consent`.

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

For each distinct email address:

* 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, Drip status, gdpr-consent, HubSpot current status), already unsubscribed in HubSpot (count), 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, not in HubSpot.

**Rules & Guidelines:**

* `drip-get-subscriber` is on the Drip 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.
* Drip is read-only here. Do NOT call `drip-add-subscriber`, `drip-update-subscriber`, `drip-unsubscribe-subscriber`, `drip-add-subscriber-tag`, `drip-remove-subscriber-tag`, `drip-add-subscriber-to-campaign`, `drip-remove-subscriber-from-campaign`, `drip-remove-subscriber-from-all-campaigns`, `drip-start-subscriber-workflow`, `drip-remove-subscriber-from-workflow`, `drip-activate-campaign`, `drip-pause-campaign`, `drip-activate-workflow` or `drip-pause-workflow`.
* 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 Drip returns no unsubscribed people, say so and stop.
* If everyone is already unsubscribed in HubSpot, 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.