Refactor backend into domain-first slices

apps/backend/Factions/Contracts/Factions.cs

@@ -0,0 +1,42 @@
+namespace SpaceGame.Api.Factions.Contracts;
+
+public sealed record FactionGoapStateSnapshot(
+  int MilitaryShipCount,
+  int MinerShipCount,
+  int TransportShipCount,
+  int ConstructorShipCount,
+  int ControlledSystemCount,
+  int TargetSystemCount,
+  bool HasShipFactory,
+  float OreStockpile,
+  float RefinedMetalsStockpile);
+
+public sealed record FactionGoapPrioritySnapshot(string GoalName, float Priority);
+
+public sealed record FactionSnapshot(
+  string Id,
+  string Label,
+  string Color,
+  float Credits,
+  float PopulationTotal,
+  float OreMined,
+  float GoodsProduced,
+  int ShipsBuilt,
+  int ShipsLost,
+  string? DefaultPolicySetId,
+  FactionGoapStateSnapshot? GoapState,
+  IReadOnlyList<FactionGoapPrioritySnapshot>? GoapPriorities);
+
+public sealed record FactionDelta(
+  string Id,
+  string Label,
+  string Color,
+  float Credits,
+  float PopulationTotal,
+  float OreMined,
+  float GoodsProduced,
+  int ShipsBuilt,
+  int ShipsLost,
+  string? DefaultPolicySetId,
+  FactionGoapStateSnapshot? GoapState,
+  IReadOnlyList<FactionGoapPrioritySnapshot>? GoapPriorities);