Show webinar attendance on every Pipedrive contact

**Objective:** For the webinar named `{webinar-name}` (and the session on `{session-date}` if given), record attendance in Pipedrive by adding one note per attendee who is a Pipedrive person, only after the user confirms.

**Step 1: Find the webinar and session in GoTo Webinar**

Call `goto-webinar-get-webinar` with `webinar-name.contains` set to `{webinar-name}`. If it matches more than one webinar, list them and stop. Call `goto-webinar-get-session` with that `webinar-key` and, if `{session-date}` is given, keep only that session.

**Step 2: Read attendance and questions**

Call `goto-webinar-get-attendee` with `webinar-key` (and `session-key` if one session was chosen). Call `goto-webinar-get-question` with the same filters. Link questions to attendees by registrant key, or by email when the registrant key is empty.

**Step 3: Match to Pipedrive and check for existing notes**

For each attendee, call `pipedrive-get-person` with `email` set to their email. Only an email match counts here; skip anyone who does not match and list them. For each matched person, call `pipedrive-get-note` with `person-id` and `note.contains` set to the webinar name; if a note already exists, skip that person as already logged.

**Step 4: Show the plan and wait**

Show a table: person, organization, time attended, number of questions, and the note text you will add. The note text is: `Attended the GoTo webinar "<webinar name>" on <session date> for <time attended>.` followed by each question asked and its answer, one per line. Ask the user to confirm. Do not write anything until they do.

**Step 5: Write, then confirm**

After confirmation, call `pipedrive-add-note` once per person with `person-id`, `org-id` set to the person's organization id when they have one, and `content` set to the note text. Then report each note as added or failed, with the error for any failure.

**Rules & Guidelines:**

* `goto-webinar-get-webinar`, `goto-webinar-get-session`, `goto-webinar-get-attendee` and `goto-webinar-get-question` are on the goto-webinar server; `pipedrive-get-person`, `pipedrive-get-note` and `pipedrive-add-note` are on the pipedrive server.
* `pipedrive-add-note` is the only tool that may write, once per person, and only after confirmation.
* Do not call `pipedrive-update-note`, `pipedrive-update-person`, `pipedrive-add-person`, `pipedrive-add-activity`, `goto-webinar-add-registrant` or `goto-webinar-delete-registrant`.

**Validation:**

* If no attendee matches a Pipedrive person, say so, list the unmatched attendees and stop without writing.
* Show time attended exactly as GoTo Webinar returns it; do not convert it into a different unit you are unsure of.
* If a write fails, carry on with the rest and report the failures at the end.