See a customer's orders and tickets on one timeline

**Objective:** Build a single support-and-purchase timeline for the customer with email `{email}`, looking back `{lookback-days}` days (default 90).

**Step 1: Find the customer in BigCommerce**

Call `bigcommerce-get-customer` (BigCommerce server) with `email` set to the address. If nothing comes back, also try `bigcommerce-get-order` with `billing-email` (guest checkout) and note the customer is a guest. If more than one customer matches, list them and stop.

**Step 2: Get their orders**

Call `bigcommerce-get-order` with `customer-id` from Step 1 (or `billing-email` for a guest) and `date-created.from` set to the lookback start. For the two most recent orders, call `bigcommerce-get-order-product` with `order-id` to list the items.

**Step 3: Find them in Freshdesk**

Call `freshdesk-get-contacts` (Freshdesk server) with `email` set to the same address. Then call `freshdesk-get-tickets` with `requester-email` set to the address and `created-at.from` set to the lookback start. If no contact or ticket exists, report the customer as present in BigCommerce and absent from Freshdesk, and continue.

**Step 4: Report**

Give a short customer header (name, company, customer group, Freshdesk company-id), then one chronological list merging orders (id, date, total-including-tax, status, refunded-amount) and tickets (ticket-id, date, subject, status, priority). End with up to three observations, such as a ticket opened within days of an order or a refunded order with an open ticket.

**Rules & Guidelines:**

* `bigcommerce-get-customer`, `bigcommerce-get-order` and `bigcommerce-get-order-product` are on the BigCommerce server; `freshdesk-get-contacts` and `freshdesk-get-tickets` are on the Freshdesk server.
* Match on email only, case-insensitively. Do not guess matches by name.
* Do not call any write tool on either server (no freshdesk-add-*, freshdesk-update-*, freshdesk-delete-*, freshdesk-reply-to-ticket, and no bigcommerce-*-add, -update or -delete tools).

**Validation:**

* If either side returns nothing, say which side and carry on with the other.
* If the Freshdesk contact email and BigCommerce billing-email differ for the same customer, report both rather than choosing one.