Find meeting attendees who are not HubSpot contacts

**Objective:** Find Granola meetings from the last `{lookback-days}` days (default 14) with attendees who are not HubSpot contacts, excluding attendees whose email ends in `{internal-domain}`.

**Step 1: List meetings (Granola)**

Call `granola-get-note` with created.from set to the lookback date. Keep id, title and created-at.

**Step 2: Attendees (Granola)**

For each note call `granola-get-attendee` with note-id set to the note id. Drop addresses ending in the internal domain. Collect distinct external emails.

**Step 3: Check HubSpot**

For each distinct external email call `hubspot-get-contacts` with email set to the address. An email with no result is missing.

**Step 4: Report**

A table of missing people: email, name, meeting title, meeting date. Group by meeting. End with the total meetings checked and total missing people.

**Rules & Guidelines:**

* Granola tools: `granola-get-note`, `granola-get-attendee`. HubSpot tool: `hubspot-get-contacts`.
* Read-only. Do not call `hubspot-add-contact`. Offer to create contacts and wait for the user.

**Validation:**

* If there are no notes in the window, say so and stop.
* Check each email once even if it appears in several meetings.