Migrate Mail surfaces to interface patterns

tests/test_manifest.py

@@ -71,6 +71,7 @@ class MailManifestTests(unittest.TestCase):
 
         mailbox = topics["mail.workflow.read-mailbox"]
         self.assertEqual(mailbox.metadata["route"], "/mail")
+        self.assertIn("mail.mailbox", mailbox.metadata["help_contexts"])
         self.assertEqual(
             mailbox.conditions[0].required_scopes,
             ("mail:mailbox:read", "mail:profile:use"),
@@ -79,6 +80,11 @@ class MailManifestTests(unittest.TestCase):
         campaign_contract = topics["mail.reference.campaign-delivery-contract"]
         self.assertEqual(campaign_contract.conditions[0].required_modules, ("mail", "campaigns"))
 
+        profile_policy = topics["mail.profiles-and-policy"]
+        self.assertIn("mail.admin.profiles", profile_policy.metadata["help_contexts"])
+        bounce_processing = topics["mail.bounce-processing"]
+        self.assertIn("mail.bounce-processing", bounce_processing.metadata["help_contexts"])
+
     def test_retirement_scrubs_credentials_before_dropping_mail_tables(self) -> None:
         events: list[str] = []