Publish placeholder DNS on registration

tests/test_api.py

@@ -273,7 +273,9 @@ def test_registration_publishes_initial_dns_when_provider_is_configured(tmp_path
     assert published[0].ipv4 == "203.0.113.77"
 
 
-def test_registration_without_public_source_ip_waits_for_first_router_update(tmp_path: Path, monkeypatch) -> None:
+def test_registration_without_public_source_ip_publishes_placeholder_until_first_router_update(
+    tmp_path: Path, monkeypatch
+) -> None:
     published = []
     monkeypatch.setattr(ddns_module, "publish_dns", lambda result, settings: published.append(result))
     app = make_app(
@@ -298,11 +300,14 @@ def test_registration_without_public_source_ip_waits_for_first_router_update(tmp
     assert registered.status_code == 200
     assert registered.text == "good registered"
     assert status.json()["status"] == "active"
-    assert status.json()["ipv4"] is None
+    assert status.json()["ipv4"] == "192.0.2.1"
     assert update.status_code == 200
     assert update.text == "good 203.0.113.80"
-    assert len(published) == 1
-    assert published[0].ipv4 == "203.0.113.80"
+    assert len(published) == 2
+    assert published[0].ipv4 == "192.0.2.1"
+    assert published[0].update_ipv4 is True
+    assert published[0].update_ipv6 is False
+    assert published[1].ipv4 == "203.0.113.80"
 
 
 def test_api_update_publishes_before_recording_ip(tmp_path: Path, monkeypatch) -> None: