Catch up on a week of meetings in one digest

**Objective:** Write a digest of the meetings from `{from-date}` to `{to-date}` (optional, defaults to today), for owner `{owner-email}` if given.

**Step 1: List the meetings**

Call `granola-get-note` with `scheduled-start.from` set to `{from-date}`, `scheduled-start.to` set to `{to-date}` and, if given, `owner-email` set to `{owner-email}`. If nothing returns, say so and stop.

**Step 2: Read them**

Use each note `summary`. Where the summary is empty or thin, call `granola-get-transcript` with `note-id` set to that note and read enough to summarize it. Call `granola-get-attendee` with `note-id` only when attendee names are needed to explain a decision.

**Step 3: Report**

* Meetings held: count and a one-line entry each (date, title, attendees)
* Themes that recurred across meetings
* Decisions made
* Follow-ups due and who owns them
* Meetings with no summary or transcript, flagged

**Rules & Guidelines:**

* Read-only. Only call `granola-get-note`, `granola-get-transcript` and `granola-get-attendee`.
* Do not include meetings the signed-in user cannot see; report only what the tools return.

**Validation:**

* If `{from-date}` is missing, ask for it.
* If more than 30 meetings return, digest the 30 most recent and say how many were left out.