Walk into every call knowing what was agreed

**Objective:** Prepare a briefing for a meeting with `{person-email}` about `{topic}` (optional), using the last `{lookback-days}` days (default 90) of past meetings.

**Step 1: Find past meetings with this person**

Call `granola-get-attendee` with `email` set to `{person-email}` and `note-created.from` set to the date `{lookback-days}` days ago. Also call `granola-get-invitee` with the same `email` and date filter to catch meetings they were invited to but did not attend. Collect the distinct `note-id` values. If none, say so and stop.

**Step 2: Read the meetings**

For each note, call `granola-get-note` with `id` set to the note id and read the `summary`. If `{topic}` is given, keep only notes relevant to it (check `title` and `summary`), and call `granola-get-transcript` with `note-id` and `text.contains` set to `{topic}` for the exact discussion.

**Step 3: Report**

* Relationship history: meetings in date order, one line each
* What was last agreed and what was left open
* Commitments made by each side that may still be pending
* Suggested agenda and 3 questions to ask
* Meetings where they were invited but did not attend

**Rules & Guidelines:**

* Read-only. Only call `granola-get-attendee`, `granola-get-invitee`, `granola-get-note` and `granola-get-transcript`.
* Treat pending commitments as unconfirmed; the notes may be out of date.
* Keep the briefing for the signed-in user; do not suggest forwarding it.

**Validation:**

* If `{lookback-days}` is empty use 90.
* If the email matches no attendee, suggest checking the spelling before widening the search.