Expand galaxy generation and viewer rendering

apps/backend/Contracts/WorldContracts.cs

@@ -34,13 +34,24 @@ public sealed record SystemSnapshot(
   string Id,
   string Label,
   Vector3Dto Position,
+  string StarKind,
+  int StarCount,
   string StarColor,
   float StarSize,
   IReadOnlyList<PlanetSnapshot> Planets);
 
 public sealed record PlanetSnapshot(
   string Label,
+  string PlanetType,
+  string Shape,
+  int MoonCount,
   float OrbitRadius,
+  float OrbitSpeed,
+  float OrbitEccentricity,
+  float OrbitInclination,
+  float OrbitLongitudeOfAscendingNode,
+  float OrbitArgumentOfPeriapsis,
+  float OrbitPhaseAtEpoch,
   float Size,
   string Color,
   bool HasRing);
@@ -49,6 +60,7 @@ public sealed record ResourceNodeSnapshot(
   string Id,
   string SystemId,
   Vector3Dto Position,
+  string SourceKind,
   float OreRemaining,
   float MaxOre,
   string ItemId);
@@ -57,6 +69,7 @@ public sealed record ResourceNodeDelta(
   string Id,
   string SystemId,
   Vector3Dto Position,
+  string SourceKind,
   float OreRemaining,
   float MaxOre,
   string ItemId);