lots more refactoring

examples/03_locked_paths.py

@@ -27,7 +27,7 @@ def main() -> None:
         RoutingProblem(
             bounds=bounds,
             nets=(NetSpec("netB", Port(50, -20, 90), Port(50, 20, 90), width=2.0),),
-            locked_routes={"netA": results_a["netA"].as_locked_route()},
+            static_obstacles=results_a["netA"].locked_geometry,
         ),
         options=options,
     ).results_by_net

examples/09_unroutable_best_effort.py

@@ -26,7 +26,7 @@ def main() -> None:
             bend_penalty=50.0,
             sbend_penalty=150.0,
         ),
-        congestion=CongestionOptions(warm_start=None),
+        congestion=CongestionOptions(warm_start_enabled=False),
     )
 
     print("Routing with a deliberately tiny node budget (should return a partial path)...")