Refine ship orders and viewer controls

apps/backend/Universe/Scenario/WorldBuilder.cs

@@ -16,7 +16,11 @@ public sealed class WorldBuilder(
       WorldGenerationOptions worldGenerationOptions,
       ScenarioDefinition? scenarioDefinition)
     {
-        var topology = topologyBuilder.Build(worldGenerationOptions);
+        // Temporary QA override: allow a scenario to provide an exact system list
+        // instead of going through procedural topology generation.
+        var topology = scenarioDefinition?.Systems is { Count: > 0 } scenarioSystems
+          ? topologyBuilder.Build(scenarioSystems)
+          : topologyBuilder.Build(worldGenerationOptions);
         var scenario = scenarioDefinition ?? scenarioValidationService.CreateEmptyScenario(worldGenerationOptions, topology.Systems);
         scenarioValidationService.Validate(scenario, topology.Systems.Select(system => system.Id).ToHashSet(StringComparer.Ordinal));