docs(mail): complete German help coverage

tests/test_manifest.py

@@ -94,6 +94,34 @@ class MailManifestTests(unittest.TestCase):
         pop3_topic = topics["mail.workflow.legacy-pop3-import"]
         self.assertEqual(("user", "admin"), pop3_topic.documentation_types)
         self.assertIn("mail:pop3:import", pop3_topic.conditions[0].any_scopes)
+        self.assertTrue(
+            {
+                "mail.pop3",
+                "mail.pop3.source-editor",
+                "mail.pop3.action.reload",
+                "mail.pop3.action.save-source",
+                "mail.pop3.action.import",
+                "mail.pop3.field.transport-security",
+                "mail.pop3.field.max-message-size",
+                "mail.pop3.field.password",
+                "mail.pop3.field.delete-after-import",
+                "mail.pop3.confirm-delete-source",
+            }.issubset(pop3_topic.metadata["help_contexts"])
+        )
+        self.assertGreaterEqual(len(pop3_topic.metadata["fields"]), 4)
+        self.assertGreaterEqual(
+            len(pop3_topic.metadata["operational_consequences"]),
+            3,
+        )
+
+        for topic in manifest.documentation:
+            with self.subTest(topic_id=topic.id):
+                german = topic.translations.get("de", {})
+                for attribute in ("title", "summary", "body"):
+                    self.assertTrue(
+                        str(german.get(attribute, "")).strip(),
+                        f"{topic.id} is missing its German {attribute}",
+                    )
 
         pop3_provider = next(
             item