Find Constant Contact campaigns with no follow-up task

**Objective:** Reconcile Constant Contact campaigns sent in the last `{lookback-days}` days (default 30) against TickTick tasks, and report which campaigns have no follow-up task and which campaign tasks point at no campaign. If `{project-name}` is given, only look at tasks in that TickTick project.

**Step 1: List recent campaigns (Constant Contact server)**

Call `constant-contact-get-campaign` with `last-sent-date.from` set to today minus the lookback. Keep `campaign-id`, `name`, `status`, `last-sent-date`, `sends`, `opens`, `clicks`. If nothing comes back, say so and stop.

**Step 2: Find tasks (TickTick server)**

For each campaign, call `ticktick-get-tasks` with `title.contains` set to the campaign `name` (add `project-name` when supplied). Also call `ticktick-get-tasks` with `title.contains` set to "campaign" and status open, to catch tasks naming a campaign you did not match by name.

**Step 3: Report**

Three tables: campaigns with an open follow-up task (task title, due date, status), campaigns with only completed tasks, and campaigns with no task at all (with sends, opens, clicks). Then open tasks that mention "campaign" but match no campaign name.

**Rules & Guidelines:**

* `constant-contact-get-campaign` is on the Constant Contact server; `ticktick-get-tasks` is on the TickTick server.
* The only link between the systems is the campaign name appearing in a task title. Say so in the report; do not claim a firm match.
* Read-only. Do not call `ticktick-add-task`, `ticktick-update-task`, `ticktick-complete-task`, `ticktick-delete-task`, `constant-contact-update-campaign` or `constant-contact-add-campaign`.

**Validation:**

* If two campaigns share a name, list both and mark the task match as ambiguous.
* If the TickTick call returns nothing for every campaign, report that no campaign has a task rather than treating it as an error.