Get a complete Constant Contact campaign report in one pass

**Objective:** Produce a performance report for the email campaign named `{campaign-name}`.

**Step 1: Find the campaign**

Call `constant-contact-get-campaign` with `name` set to `{campaign-name}`. If nothing comes back, retry with `name.contains`. If more than one campaign matches, list them (name, status, last-sent-date) and stop so the user can pick one. If the campaign's status is Draft or Scheduled, say it has not been sent yet and stop.

**Step 2: Read the headline counts**

From the campaign record take sends, opens, not-opened, clicks, bounces, forwards and opt-outs. Calculate:

* delivered = sends - bounces
* open rate = opens / delivered
* click rate = clicks / delivered
* click-to-open rate = clicks / opens
* bounce rate = bounces / sends
* unsubscribe rate = opt-outs / delivered

**Step 3: Break down the engagement**

* Call `constant-contact-get-campaign-activity` with the `campaign-id` to list the campaign's activities. Note whether a resend (role resend) exists.
* Call `constant-contact-get-campaign-click` with the `campaign-id`. Group the clicks by link-url and count them; group by device-type.
* Call `constant-contact-get-campaign-open` with the `campaign-id` and group the opens by device-type.
* Call `constant-contact-get-campaign-bounce` with the `campaign-id` and group by bounce-type.
* Call `constant-contact-get-campaign-unsubscribe` with the `campaign-id` and collect the reasons given.

**Step 4: Report**

1. A header line: campaign name, last sent date, status.
2. A table of the headline counts and the rates from Step 2, rates as percentages to one decimal place.
3. Top 5 links by clicks (link-url, clicks).
4. Opens and clicks by device type.
5. Bounces by type, and the unsubscribe reasons grouped and counted.
6. Three plain observations about what worked and what did not, each backed by a number above.

**Rules & Guidelines:**

* This is read-only. Do not call `constant-contact-add-campaign`, `constant-contact-update-campaign`, `constant-contact-resend-campaign-to-non-openers` or any other add or update tool.
* If a breakdown read returns no rows, say so in that section rather than leaving it out.
* Do not compare against industry benchmarks you cannot cite.

**Validation:**

* If sends is 0 or missing, report the raw counts only and skip the rates.
* If the breakdown counts differ from the headline counts, report the headline counts and note the difference.