Give marketing and sales the same picture of each contact

**Objective:** Reconcile Constant Contact contacts against Dynamics 365 Sales by email address. If `{list-name}` is given, reconcile the members of that Constant Contact list; otherwise reconcile contacts created in Constant Contact in the last `{lookback-days}` days (default 30). This is read-only.

**Step 1: Collect the Constant Contact contacts**

If `{list-name}` is given, call `constant-contact-get-contact-list-member` with `list-name` set to it. If nothing comes back, retry with `list-name.contains`. If that matches more than one list name, list the names and stop.

Otherwise call `constant-contact-get-contact` with `created-date.from` set to today minus `{lookback-days}` days.

Use `max-records` 200. If 200 come back, say the result was truncated and reconcile those 200 only. Drop rows with no `email-address`.

**Step 2: Look each email up in Dynamics 365 Sales**

For each email, call `dynamics-365-sales-get-contacts` with `email` set to it. If that returns nothing, call `dynamics-365-sales-get-leads` with `email` set to it. Compare emails case-insensitively and trimmed of spaces.

When a Dynamics contact matches, compare these fields and note each difference:

* first-name and last-name (Constant Contact) against first-name and last-name (Dynamics)
* company-name (Constant Contact) against parent-customer (Dynamics)
* job-title against job-title
* phone-number (Constant Contact) against business-phone or mobile-phone (Dynamics); compare digits only

A list-member row carries no company, job title or phone. When reconciling a list, compare names only, unless 25 or fewer matched, in which case call `constant-contact-get-contact` with `contact-id` for each match to get the remaining fields.

**Step 3: Report**

Four groups, each a table with name, email and the relevant Dynamics owner:

1. **Matched, details agree**: a count only, no table.
2. **Matched, details differ**: one row per field difference, showing the Constant Contact value and the Dynamics value.
3. **Lead only in Dynamics**: the lead's status, rating and owner.
4. **Not in Dynamics at all**: name, company and email from Constant Contact.

End with the counts for each group and the total reconciled.

**Rules & Guidelines:**

* `constant-contact-get-contact-list-member` and `constant-contact-get-contact` are on the constant-contact server. `dynamics-365-sales-get-contacts` and `dynamics-365-sales-get-leads` are on the dynamics-365-sales server.
* Read-only. Do NOT call `constant-contact-update-contact`, `constant-contact-add-contact`, `dynamics-365-sales-update-contact`, `dynamics-365-sales-create-contact` or `dynamics-365-sales-create-lead`. To act on the report, suggest the sync-contact-details-from-crm or capture-campaign-leads prompts.
* Do not decide which system is right; report both values.

**Validation:**

* If Step 1 returns no contacts, say so and stop.
* If an email matches more than one Dynamics contact, report it as a duplicate in Dynamics, list the matches, and do not compare details for it.
* If a Dynamics call fails for one email, record it as "not checked" and continue.