Enroll or remove Geotab add-in devices without the ID hunt

**Objective:** {operation} device(s) {device-serials} in add-in `{add-in-name}` on database {database}. A blank device list means all devices in the database. These tools change live MyAdmin data. Never call a write tool before the user has explicitly confirmed the exact values in this conversation.

**Step 1: Resolve the add-in**

Call `geotab-myadmin-get-device-add-in` with add-in.contains = {add-in-name} and, if given, database = {database}. It must resolve to exactly one installation; if several, list database and status and ask which. Take its solution ID and database.

**Step 2: Resolve the account ID**

The write tools need a numeric account-id. Call `geotab-myadmin-get-customer` and take account-id from the row for this account (match on the account number shown by `geotab-myadmin-get-device-contract` for one of the devices if needed). If it cannot be resolved to one value, ask the user.

**Step 3: Current enrolment**

For each listed serial, call `geotab-myadmin-get-device-add-in-detail` with device-serial = the serial. Skip serials already in the target state.

**Step 4: Confirm**

Show add-in, database, solution ID, account ID, operation and the serials (or "all devices"). Ask the user to confirm.

**Step 5: Write, once**

* enroll + serials: `geotab-myadmin-enroll-device-from-add-in` with device-serial-numbers as a JSON array.
* unenroll + serials: `geotab-myadmin-unenroll-device-from-add-in` with device-serial-numbers as a JSON array.
* enroll + blank: `geotab-myadmin-enroll-all-devices-from-add-in`.
* unenroll + blank: `geotab-myadmin-unenroll-all-devices-from-add-in`. Warn first that this removes every device.

Pass account-id, solution-id and database-name in every case.

**Step 6: Verify**

Call `geotab-myadmin-get-device-add-in-audit-log` with database and action-date.from = today, and report the entries.

**Rules & Guidelines:**

* Only one write tool call. If {operation} is not enroll or unenroll, ask and stop.

**Validation:**

* If the add-in is not found, stop without writing.