Turn Chorus call attendees into Dynamics 365 Sales contacts

**Objective:** Find the people from `{account-name}` who took part in Chorus conversations in the last `{lookback-days}` days (default 90) but are not contacts in Dynamics 365 Sales, and create the ones the user approves, linked to the account `{account-id}` if given.

**Step 1: Collect the attendees (Chorus)**

Call `chorus-get-engagements` with `account-name` = `{account-name}` and `date.from` = today minus `{lookback-days}` days (retry with `account-name.contains` if nothing comes back). For each conversation, call `chorus-get-conversation-participants` with its `conversation-id`.

Keep only customer-side people: drop anyone whose email matches a Chorus user (check with `chorus-get-users` by `email`) or whose email domain is your own company's. De-duplicate by email, keeping name, title, company name, and how many conversations each attended.

**Step 2: Check the CRM (Dynamics 365 Sales)**

For each remaining email, call `dynamics-365-sales-get-contacts` with `email` = that address. If there is no match, also call `dynamics-365-sales-get-leads` with `email`, so an existing lead is not duplicated as a contact.

**Step 3: Propose**

A table of the people with no contact: name, email, title, conversations attended, and "existing lead" if Step 2 found one. Split each name into first and last name. Ask the user which rows to create; create nothing without that answer.

**Step 4: Create (Dynamics 365 Sales)**

For each approved row, call `dynamics-365-sales-create-contact` with `first-name`, `last-name`, `email`, `job-title`, and `company-id` = `{account-id}` if given. Report each contact created and any that failed.

**Rules & Guidelines:**

* `chorus-get-engagements`, `chorus-get-conversation-participants` and `chorus-get-users` are on the Chorus server. `dynamics-365-sales-get-contacts`, `dynamics-365-sales-get-leads` and `dynamics-365-sales-create-contact` are on the Dynamics 365 Sales server.
* The only write tool this prompt may call is `dynamics-365-sales-create-contact`, once per approved row. Do not call `dynamics-365-sales-create-lead`, `dynamics-365-sales-update-contact` or any Chorus action tool.
* `{account-id}` is a GUID the user supplies from the account's address bar in Dynamics 365. Never guess one; if it is blank, create the contacts unlinked and say so.
* Skip anyone Chorus has no email for.

**Validation:**

* If every attendee is already a contact, say the CRM is complete for this account and stop.
* Compare emails case-insensitively.