Simplify DDNS flow and polish UI

tests/test_security.py

@@ -51,22 +51,6 @@ def test_generated_account_cannot_update_other_hostname(tmp_path: Path) -> None:
     assert response.status_code == 401
 
 
-def test_shared_secret_without_allowed_hosts_cannot_update_arbitrary_hostname(tmp_path: Path) -> None:
-    database_path = tmp_path / "ddns.sqlite3"
-    store = DdnsStore(database_path)
-    app = make_app(DdnsSettings(database_path=database_path, shared_secret="secret", admin_password="admin"))
-    client = TestClient(app)
-
-    response = client.get(
-        "/nic/update",
-        params={"hostname": "other.example.net", "myip": "203.0.113.9", "password": "secret"},
-    )
-
-    assert response.status_code == 401
-    assert response.text == "badauth"
-    assert store.list_records() == []
-
-
 def test_bearer_link_routes_share_rate_limit_bucket(tmp_path: Path) -> None:
     app = make_app(
         DdnsSettings(
@@ -121,7 +105,6 @@ def test_redacted_access_log_masks_bearer_paths_and_query_strings(tmp_path: Path
         "/api/v1/updates/short",
         "/m/short",
         "/api/v1/management/short",
-        "/d/short",
     ],
 )
 def test_secret_path_tokens_are_constrained(tmp_path: Path, path: str) -> None: