docs(portal): declare DSAR ownership boundary

tests/test_service_directory.py

@@ -440,6 +440,22 @@ class PortalServiceDirectoryTests(unittest.TestCase):
             "application_status.projection",
             {item.name for item in manifest.requires_interfaces},
         )
+        self.assertFalse(
+            any(
+                name.startswith("privacy.dsar.")
+                for name in manifest.capability_factories
+            )
+        )
+        dsar_topic = next(
+            item
+            for item in manifest.documentation
+            if item.id == "portal.data-subject-requests"
+        )
+        self.assertEqual(
+            "not_applicable_no_persistence",
+            dsar_topic.metadata["dsar_coverage"],
+        )
+        self.assertTrue({"admin", "user"}.issubset(dsar_topic.documentation_types))
 
 
 if __name__ == "__main__":