Refactor modular startup and viewer ship debugging

apps/backend/Data/WorldDefinitions.cs

@@ -60,6 +60,14 @@ public sealed class ResourceNodeDefinition
     public int ShardCount { get; set; }
 }
 
+public sealed class ItemDefinition
+{
+    public required string Id { get; set; }
+    public required string Label { get; set; }
+    public required string Storage { get; set; }
+    public string Summary { get; set; } = string.Empty;
+}
+
 public sealed class PlanetDefinition
 {
     public required string Label { get; set; }
@@ -95,6 +103,7 @@ public sealed class ShipDefinition
     public required string HullColor { get; set; }
     public float Size { get; set; }
     public float MaxHealth { get; set; }
+    public List<string> Modules { get; set; } = [];
 }
 
 public sealed class ConstructibleDefinition
@@ -105,6 +114,8 @@ public sealed class ConstructibleDefinition
     public required string Color { get; set; }
     public float Radius { get; set; }
     public int DockingCapacity { get; set; }
+    public Dictionary<string, float> Storage { get; set; } = new(StringComparer.Ordinal);
+    public List<string> Modules { get; set; } = [];
 }
 
 public sealed class ScenarioDefinition