Add Helpdesk smoke test

docs/test_instance_post_import.md

@@ -123,7 +123,19 @@ php -l redMCP/app/redmineClient.php
 Use the existing redMCP examples in `redMCP/README.md` for read and CRUD smoke
 tests against the LAN Redmine copy.
 
-## 7. Re-Run The Read-Only Validator
+## 7. Run The Helpdesk Smoke Test
+
+After the post-import checks pass, run the live Helpdesk/redMCP smoke test:
+
+```sh
+./helpdesk_smoke_test.py
+```
+
+This imports a controlled Helpdesk email, verifies `issueWithHelpdesk()`, checks
+non-Helpdesk CRUD, verifies outbound Mailpit delivery, and closes the created
+test ticket. Details are in `docs/helpdesk_smoke_test.md`.
+
+## 8. Re-Run The Read-Only Validator
 
 Finish by running: