security: separate Campaign reader and operator data

tests/test_campaign_reports.py

@@ -131,6 +131,12 @@ def test_invalid_legacy_snapshot_never_echoes_validation_details() -> None:
     assert delivery["load_error"] == "Execution snapshot is invalid; rebuild the selected version before delivery."
     assert "provider-secret" not in repr(delivery)
     assert "smtp.internal.example" not in repr(delivery)
+    assert "background_workers_enabled" not in delivery
+    assert "smtp_transport_revision" not in delivery
+
+    operator_delivery = _load_delivery_info(version, [], include_diagnostics=True)
+    assert "background_workers_enabled" in operator_delivery
+    assert "smtp_transport_revision" in operator_delivery
 
 
 def test_aggregate_report_omits_recipient_level_failures_by_default() -> None: