Tell each salesperson which contacts can no longer be emailed

**Objective:** Find people who bounced or unsubscribed in Constant Contact in the last `{lookback-days}` days (default 30) and report which Dynamics 365 Sales contacts and leads they are, grouped by owner. This is read-only.

**Step 1: Collect bounces and unsubscribes from Constant Contact**

With `created-date.from` set to today minus `{lookback-days}` days, call:

* `constant-contact-get-campaign-bounce` (keep bounce-type and created-date)
* `constant-contact-get-campaign-unsubscribe` (keep reason and created-date)

Use `max-records` 500 for each. Reduce to unique email addresses. If a person both bounced and unsubscribed, keep both facts.

**Step 2: Match each email in Dynamics 365 Sales**

For each email, call `dynamics-365-sales-get-contacts` with `email`, then `dynamics-365-sales-get-leads` with `email` if no contact matches. Keep owner, parent-customer (contacts) or company-name (leads).

**Step 3: Report**

1. Totals: bounces, unsubscribes, matched to a contact, matched to a lead, not in Dynamics.
2. One section per owner, with a table: name, company, email, contact or lead, what happened (bounce type or unsubscribe reason), and date.
3. People not in Dynamics: a count only, unless there are 20 or fewer, then list them.

Point out bounces of a permanent type (for example non-existent address) separately: those emails in Dynamics are likely wrong and need correcting.

**Rules & Guidelines:**

* constant-contact tools are on the constant-contact server; dynamics-365-sales tools are on the dynamics-365-sales server.
* Read-only. Do NOT call `dynamics-365-sales-update-contact`, `dynamics-365-sales-update-lead`, `dynamics-365-sales-create-task`, `dynamics-365-sales-create-note`, `constant-contact-update-contact` or any other create, update or add tool.
* An unsubscribe is a marketing opt-out. Say so in the report; it does not mean the person cannot be contacted one-to-one by their owner.

**Validation:**

* If there are no bounces or unsubscribes in the period, say so and stop.
* If 500 rows come back for either call, say the result was truncated.
* Match emails case-insensitively and trimmed of spaces.