Find unfulfilled Shopify orders that have no TickTick task

**Objective:** Reconcile unfulfilled Shopify orders from the last `{lookback-days}` days (default 14) against open TickTick tasks, limited to the TickTick project `{project-name}` if given (default all projects).

**Step 1: Read orders (Shopify server)**

Call `shopify-get-order` with `fulfillment-status` set to unfulfilled and `created-at.from` set to the start of the lookback window. Keep `name`, `order-number`, `email`, `total-price` and `created-at` for each order. If more than 100 match, report the count and work on the 100 oldest.

**Step 2: Read open tasks (TickTick server)**

Call `ticktick-get-tasks` with `status` open and, if `{project-name}` was given, `project-name`. Keep `id`, `title`, `project-name` and `due-date`.

**Step 3: Match across servers**

For each order, look for an open task whose `title` contains the order `name` (for example #1042) or `order-number`. Matching is by text only; there is no shared id.

**Step 4: Report**

Three tables: orders with a matching task (order, task title, project, due date); orders with no task; open tasks that name an order which is not in the unfulfilled list (likely stale). End with the counts.

**Rules & Guidelines:**

* `shopify-get-order` is on the Shopify server; `ticktick-get-tasks` is on the TickTick server.
* Read-only. Never call `ticktick-add-task`, `ticktick-update-task`, `ticktick-complete-task`, `ticktick-delete-task`, `shopify-update-order`, or any other add, update or delete tool.

**Validation:**

* If Shopify returns no orders, say so and stop.
* If TickTick returns no tasks, report every order as having no task.
* If a task title matches several orders, list it under each and flag it as ambiguous.