Polish KarlDNS production UI and docs

tests/test_updates.py

@@ -6,7 +6,7 @@ import pytest
 from fastapi.testclient import TestClient
 
 import router_dyndns.ddns_service as ddns_service
-from router_dyndns.ddns import DdnsSettings, DdnsStore, DnsProviderError, make_app
+from router_dyndns.ddns import DdnsSettings, DdnsStore, DnsProviderError, DnsReconciliationError, make_app
 
 
 def test_update_accepts_fritzbox_placeholders(tmp_path: Path) -> None:
@@ -145,6 +145,27 @@ def test_dns_publish_failure_does_not_update_record(tmp_path: Path, monkeypatch,
     assert "dns down" not in caplog.text
 
 
+def test_dns_reconciliation_failure_is_logged_separately(tmp_path: Path, monkeypatch, caplog) -> None:
+    def fail_publish(result, settings):
+        raise DnsReconciliationError("provider state mismatch")
+
+    caplog.set_level(logging.WARNING, logger="router_dyndns.ddns_service")
+    monkeypatch.setattr(ddns_service, "publish_dns", fail_publish)
+    database_path = tmp_path / "ddns.sqlite3"
+    store = DdnsStore(database_path)
+    account = store.create_account("home.example.net", "alice")
+    app = make_app(DdnsSettings(database_path=database_path, admin_password="admin"))
+    client = TestClient(app)
+
+    response = client.get(f"/u/{account['update_slug']}", params={"myip": "203.0.113.9"})
+
+    assert response.status_code == 500
+    assert store.list_records() == []
+    assert store.list_update_events()[0]["status"] == "dns_reconcile_failed"
+    assert store.get_service_metrics()["dns_reconcile_failures_total"] == 1
+    assert "DNS reconciliation failed for hostname=home.example.net" in caplog.text
+
+
 def test_programming_error_during_publish_is_not_mapped_to_dns_failure(tmp_path: Path, monkeypatch) -> None:
     def fail_publish(result, settings):
         raise AssertionError("publish bug")
@@ -178,6 +199,10 @@ def test_dns_publish_success_updates_record(tmp_path: Path, monkeypatch) -> None
     assert response.text == "good 203.0.113.9"
     assert len(published) == 1
     assert store.list_records()[0]["ipv4"] == "203.0.113.9"
+    metrics = store.get_service_metrics()
+    assert metrics["update_requests_total"] == 1
+    assert metrics["update_success_total"] == 1
+    assert metrics["update_latency_samples_total"] == 1
 
 
 def test_unchanged_slug_update_is_read_only_for_history_and_record(tmp_path: Path, monkeypatch) -> None: