to rename

apps/backend/Universe/Scenario/SystemSelectionPolicy.cs

@@ -0,0 +1,23 @@
+namespace SpaceGame.Api.Universe.Scenario;
+
+internal static class SystemSelectionPolicy
+{
+    internal static readonly string[] PreferredSystemIds =
+    [
+      "sol",
+      "helios",
+    ];
+
+    internal static string SelectFallbackSystemId(IReadOnlyList<string> availableSystemIds)
+    {
+        foreach (var preferredSystemId in PreferredSystemIds)
+        {
+            if (availableSystemIds.Contains(preferredSystemId, StringComparer.Ordinal))
+            {
+                return preferredSystemId;
+            }
+        }
+
+        return availableSystemIds.FirstOrDefault() ?? string.Empty;
+    }
+}