Know which Zendesk agents have a Jira account

**Objective:** Match the Zendesk agents in group {group-name} (all agents if empty) to Jira users by email, and report who has no usable Jira account.

**Step 1: List the agents (Zendesk)**

If {group-name} is not empty, call `zendesk-get-group-member` with group-name {group-name} and take user-name and user-email. If it is empty, call `zendesk-get-user` with role agent, then again with role admin, and take name and email. Skip users with no email. If no agents come back, stop and say so.

**Step 2: Look each up in Jira**

For each email, call `jira-get-user` with email. Keep name, active and user-account-id.

**Step 3: Report**

* **Matched:** Zendesk name, email, Jira name, user-account-id.
* **Inactive in Jira:** matched, but active is false.
* **No Jira account:** no match on email.
* **Name mismatch:** matched on email but the names differ enough to check by eye.

End with the counts for each group.

**Rules & Guidelines:**

* `zendesk-get-group-member` and `zendesk-get-user` are on the zendesk server. `jira-get-user` is on the jira server.
* Read-only. Do not call `zendesk-update-user`, `zendesk-add-group-member` or `jira-add-issue-watcher`.
* Match on email only, compared case-insensitively. Never match on name alone.

**Validation:**

* Jira hides email for some accounts depending on privacy settings. If `jira-get-user` returns nothing for most agents, say this is the likely cause rather than reporting everyone as missing.