Survey the solved Zendesk tickets that never got one

**Objective:** Find Zendesk tickets solved in the last `{lookback-days}` days (default 7) that have no Simplesat response, and send the Simplesat survey with token `{survey-token}` to each requester only after the user confirms.

**Step 1: Solved tickets in Zendesk**

Call `zendesk-get-ticket` with `status` = solved and `created.from` set to 30 days before the window starts, then keep tickets whose `solved-date` falls in the last {lookback-days} days. Drop tickets with no `requester-email`. Stop after 50 tickets and say the list was capped.

**Step 2: Check Simplesat**

For each ticket, call `simplesat-list-responses` with `ticket_id` = the ticket's `ticket-id`. Keep only tickets with no response.

**Step 3: Report and ask**

List each ticket: id, subject, requester name and email, assignee, solved date. If the same email appears on several tickets, keep only the most recently solved one. Then ask: "Send the survey to these N requesters?" Do not continue without a yes.

**Step 4: Send (only after yes)**

For each confirmed ticket, call `simplesat-send-survey-email` once with `survey-token` = {survey-token}, `customer-email` = the `requester-email`, `customer-name` = the `requester-name`, `ticket-id` = the ticket id, `ticket-subject` = the `subject`, and `team-member-name` = the `assignee-name`.

**Step 5: Report**

Sent, skipped (duplicate email or no email) and failed, each with ticket ids.

**Rules & Guidelines:**

* `zendesk-get-ticket` is on the zendesk server. `simplesat-list-responses` and `simplesat-send-survey-email` are on the simplesat server.
* The only write is `simplesat-send-survey-email`, once per requester. Never send twice to the same email in one run.
* Do NOT call `zendesk-update-ticket`, `zendesk-add-ticket-comment` or `simplesat-add-customer`.

**Validation:**

* If every solved ticket already has a response, say so and stop without sending.
* If a send fails, report the ticket id and the error, and carry on with the rest.