Set up a new customer completely in one confirmed pass

**Objective:** Create `{company-name}` as a new customer with `{contact-name}` (email `{contact-email}`) as its primary contact, and, if `{opportunity-topic}` is given, a first opportunity with a follow-up task.

**Step 1: Check it does not already exist**

* Call `dynamics-365-sales-get-accounts` with `account-name.contains` = `{company-name}`.
* If `{contact-email}` is given, call `dynamics-365-sales-get-contacts` with `email` = it; otherwise call it with `full-name` = `{contact-name}`.
* Call `dynamics-365-sales-get-leads` with `company-name` = `{company-name}`.

If an account or contact already matches, show the matches and stop: do not create a duplicate. If an open lead matches, mention it (it may need qualifying instead) and ask whether to continue.

**Step 2: Confirm the plan**

Show exactly what will be created: the account name, the contact's first and last name and email, and the opportunity topic if any. Ask the user to confirm once. Collect any extra details they volunteer (phone, city, country, industry, job title, estimated revenue, close date) but do not ask for them one by one.

**Step 3: Create, in this order**

1. `dynamics-365-sales-create-account` with `name` = `{company-name}` plus any details given. Keep the returned `id` as the account id.
2. `dynamics-365-sales-create-contact` with `first-name`, `last-name`, `email` and `company-id` = the account id.
3. `dynamics-365-sales-update-account` with `id` = the account id and `primary-contact-id` = the new contact's `id`.
4. If `{opportunity-topic}` is given: `dynamics-365-sales-create-opportunity` with `topic`, `account-id` = the account id and `contact-id` = the contact id, then `dynamics-365-sales-create-task` with `subject` = "Follow up: " plus the topic, `regarding-id` = the new opportunity's `id`, and `due-date` = 3 working days from today.

**Step 4: Report**

List each record created with its id, and confirm the contact is linked to the account and set as its primary contact.

**Rules & Guidelines:**

* Write only after the single confirmation in Step 2. Call each create tool once; never retry a create that returned an error without telling the user, because the first call may have succeeded.
* The only write tools this prompt may call are `dynamics-365-sales-create-account`, `dynamics-365-sales-create-contact`, `dynamics-365-sales-update-account`, `dynamics-365-sales-create-opportunity` and `dynamics-365-sales-create-task`.
* If a step fails, stop, report what was already created (with ids) and what was not. Do not try to undo anything.
* Split `{contact-name}` into first and last name at the last space; if it is a single word, use it as the last name.

**Validation:**

* If `{company-name}` or `{contact-name}` is blank, ask for it and stop.