Fix WooCommerce checkout, shipping and tax gaps before orders are lost

**Objective:** Audit the WooCommerce store's pages, shipping and tax setup and report what is missing or inconsistent. If `{country}` is given, check tax coverage for that two-letter country code only; otherwise check every country customers bill from.

**Step 1: Store pages**

Call `woocommerce-get-page`. Flag any page where `exists` is false, `page-set` is false, `visible` is false, or `shortcode-required` is true and `shortcode-present` is false. Cart, checkout and my account problems break checkout, so mark them critical.

**Step 2: Shipping**

* `woocommerce-get-shipping-zone`: flag a store with no zone other than the default "Locations not covered by your other zones".
* `woocommerce-get-shipping-method`: list the method types available (flat rate, free shipping, local pickup).
* `woocommerce-get-shipping-class`: flag classes with `count` 0 as unused.

**Step 3: Tax**

* `woocommerce-get-tax-rate`, filtered by `country` = `{country}` when given.
* `woocommerce-get-customer` with `max-records` 2000, filtered by `billing-country` = `{country}` when given. Count customers per `billing-country`.
* Flag each customer country with no tax rate row, unless a rate with an empty `country` (applies everywhere) exists.
* Flag duplicates: two rates with the same country, state, postcode, city, class and priority.
* List `compound` rates and rates that do not apply to `shipping`, so the user can confirm they are intended.

**Step 4: Report**

1. Critical issues (checkout pages).
2. Pages table: page, exists, visible, shortcode present, status.
3. Shipping: zones, methods, unused classes.
4. Tax: rates by country, customer countries with no rate (with customer counts), duplicates, compound and non-shipping rates.
5. Recommended fixes, most important first.

**Rules & Guidelines:**

* This prompt is read-only. Do not call any write tool: `woocommerce-add-order`, `woocommerce-update-order`, `woocommerce-add-order-note`, `woocommerce-send-order-details`, `woocommerce-add-refund`, `woocommerce-add-customer`, `woocommerce-update-customer`, `woocommerce-add-product`, `woocommerce-update-product`, `woocommerce-update-product-variation`, `woocommerce-add-coupon`, `woocommerce-update-coupon`.
* Nothing here can be fixed through a tool. Say each fix must be made in the WooCommerce settings.
* Zones are not linked to their methods in this data, so do not claim a zone has no method.
* A missing tax rate is only a problem if the store charges tax in that country. Say that instead of asserting it.

**Validation:**

* If a read returns nothing, report that section as "no data" rather than as a failure.
* If `{country}` is not a two-letter code, ask for one and stop.