Get donor emails onto Bloomerang records, without the private ones

**Objective:** Record the emails sent by `{donor-email}` in the last `{lookback-days}` days (default 30), as captured by Chorus, as inbound Email interactions on their Bloomerang constituent, skipping any already logged.

**Step 1: Find the constituent in Bloomerang**

Call `bloomerang-get-email-address` with `value` set to `{donor-email}` and take `account-id`. If nothing comes back, try `bloomerang-get-constituent` with `primary-email`. If there is still no match, say the donor is not in Bloomerang and stop. If more than one account matches, list them and stop.

**Step 2: Read the emails in Chorus**

Call `chorus-get-emails` with `initiator-email` set to `{donor-email}` and `sent-time.from` set to the start of the window. Skip emails where `private` is true and say how many were skipped. If none remain, say so and stop.

**Step 3: Skip what is already logged**

Call `bloomerang-get-interaction` with `account-id`, `channel` Email and `date.from` set to the start of the window. Treat a Chorus email as already logged if an interaction exists on the same calendar day with a subject matching its `name` (the email subject).

**Step 4: Confirm, then write**

Show a table: sent date, subject, Chorus owner (`owner-name`), action (log / already logged). For each row to log, the interaction will be: `date` the calendar day of `sent-time`, `channel` Email, `purpose` asked from the user once for the whole batch, `subject` the email subject, `is-inbound` true, `note` the first 500 characters of `body` followed by "Captured by Chorus, email {email-id}".

Ask the user to confirm. Only after an explicit yes, call `bloomerang-add-interaction` once per row to log. Report each returned `id`.

**Rules & Guidelines:**

* Tools whose names start with chorus are on the chorus server; tools whose names start with bloomerang are on the bloomerang server.
* The only write this prompt may make is `bloomerang-add-interaction`, and only after confirmation. Do not call `bloomerang-add-note`, `bloomerang-update-interaction`, `bloomerang-add-email-address` or any Chorus action.
* Never log a private email.

**Validation:**

* If `bloomerang-add-interaction` rejects the purpose value, report the error and ask for a valid one; do not guess.
* Match emails case-insensitively.