Refactor backend into domain-first slices

apps/backend/Stations/Runtime/StationRuntimeModels.cs

@@ -0,0 +1,47 @@
+namespace SpaceGame.Api.Stations.Runtime;
+
+public sealed class StationRuntime
+{
+  public required string Id { get; init; }
+  public required string SystemId { get; init; }
+  public required string Label { get; set; }
+  public string Category { get; set; } = "station";
+  public string Color { get; set; } = "#8df0d2";
+  public required Vector3 Position { get; set; }
+  public float Radius { get; set; } = 24f;
+  public required string FactionId { get; init; }
+  public string? CelestialId { get; set; }
+  public string? CommanderId { get; set; }
+  public string? PolicySetId { get; set; }
+  public List<StationModuleRuntime> Modules { get; } = [];
+  public IEnumerable<string> InstalledModules => Modules.Select((module) => module.ModuleId);
+  public Dictionary<string, float> Inventory { get; } = new(StringComparer.Ordinal);
+  public Dictionary<string, float> ProductionLaneTimers { get; } = new(StringComparer.Ordinal);
+  public Dictionary<int, string> DockingPadAssignments { get; } = new();
+  public HashSet<string> MarketOrderIds { get; } = new(StringComparer.Ordinal);
+  public float Population { get; set; }
+  public float PopulationCapacity { get; set; }
+  public float WorkforceRequired { get; set; }
+  public float WorkforceEffectiveRatio { get; set; } = 0.1f;
+  public float PopulationGrowthProgress { get; set; }
+  public float ShipProductionProgressSeconds { get; set; }
+  public HashSet<string> DockedShipIds { get; } = [];
+  public ModuleConstructionRuntime? ActiveConstruction { get; set; }
+  public string LastDeltaSignature { get; set; } = string.Empty;
+}
+
+public sealed class StationModuleRuntime
+{
+  public required string Id { get; init; }
+  public required string ModuleId { get; init; }
+  public float Health { get; set; }
+  public float MaxHealth { get; set; }
+}
+
+public sealed class ModuleConstructionRuntime
+{
+  public required string ModuleId { get; init; }
+  public float ProgressSeconds { get; set; }
+  public float RequiredSeconds { get; init; }
+  public string AssignedConstructorShipId { get; set; } = string.Empty;
+}