Refactor runtime bootstrap and ship control flows

apps/backend/Universe/Scenario/LoaderSupport.cs

@@ -89,9 +89,6 @@ internal static class LoaderSupport
     internal static bool HasInstalledModules(StationRuntime station, params string[] modules) =>
       modules.All(moduleId => station.Modules.Any(candidate => string.Equals(candidate.ModuleId, moduleId, StringComparison.Ordinal)));
 
-    internal static bool HasCapabilities(ShipDefinition definition, params string[] capabilities) =>
-      capabilities.All(capability => definition.Capabilities.Contains(capability, StringComparer.Ordinal));
-
     internal static void AddStationModule(StationRuntime station, IReadOnlyDictionary<string, ModuleDefinition> moduleDefinitions, string moduleId)
     {
         if (!moduleDefinitions.TryGetValue(moduleId, out var definition))

apps/backend/Universe/Scenario/ScenarioContentBuilder.cs

@@ -1,5 +1,7 @@
 using SpaceGame.Api.Universe.Bootstrap;
-using SpaceGame.Api.Ships.Simulation;
+using SpaceGame.Api.Ships.AI;
+using static SpaceGame.Api.Shared.Runtime.ShipBehaviorKinds;
+using static SpaceGame.Api.Shared.Runtime.SimulationRuntimeSupport;
 using static SpaceGame.Api.Universe.Scenario.LoaderSupport;
 
 namespace SpaceGame.Api.Universe.Scenario;
@@ -194,7 +196,7 @@ public sealed class ScenarioContentBuilder(
                       patrolRoutes,
                       stations),
                     Skills = ShipBootstrapPolicy.CreateSkills(definition),
-                    Health = definition.MaxHealth,
+                    Health = definition.Hull,
                 });
 
                 foreach (var (itemId, amount) in formation.StartingInventory)
@@ -232,45 +234,45 @@ public sealed class ScenarioContentBuilder(
             && string.Equals(station.SystemId, systemId, StringComparison.Ordinal))
           ?? stations.FirstOrDefault(station => string.Equals(station.FactionId, factionId, StringComparison.Ordinal));
 
-        if (string.Equals(definition.Kind, "construction", StringComparison.Ordinal) && homeStation is not null)
+        if (IsConstructionShip(definition) && homeStation is not null)
         {
             return new DefaultBehaviorRuntime
             {
-                Kind = "construct-station",
+                Kind = ConstructStation,
                 HomeSystemId = homeStation.SystemId,
                 HomeStationId = homeStation.Id,
                 PreferredConstructionSiteId = null,
             };
         }
 
-        if (LoaderSupport.HasCapabilities(definition, "mining") && homeStation is not null)
+        if (IsMiningShip(definition) && homeStation is not null)
         {
             return new DefaultBehaviorRuntime
             {
-                Kind = definition.CargoCapacity >= 120f ? "expert-auto-mine" : "advanced-auto-mine",
+                Kind = definition.GetTotalCargoCapacity() >= 120f ? ExpertAutoMine : AdvancedAutoMine,
                 HomeSystemId = homeStation.SystemId,
                 HomeStationId = homeStation.Id,
                 AreaSystemId = homeStation.SystemId,
-                MaxSystemRange = definition.CargoCapacity >= 120f ? 3 : 1,
+                MaxSystemRange = definition.GetTotalCargoCapacity() >= 120f ? 3 : 1,
             };
         }
 
-        if (string.Equals(definition.Kind, "transport", StringComparison.Ordinal))
+        if (IsTransportShip(definition))
         {
             return new DefaultBehaviorRuntime
             {
-                Kind = "advanced-auto-trade",
+                Kind = AdvancedAutoTrade,
                 HomeSystemId = homeStation?.SystemId ?? systemId,
                 HomeStationId = homeStation?.Id,
                 MaxSystemRange = 2,
             };
         }
 
-        if (string.Equals(definition.Kind, "military", StringComparison.Ordinal) && patrolRoutes.TryGetValue(systemId, out var route))
+        if (IsMilitaryShip(definition) && patrolRoutes.TryGetValue(systemId, out var route))
         {
             return new DefaultBehaviorRuntime
             {
-                Kind = "patrol",
+                Kind = Patrol,
                 HomeSystemId = homeStation?.SystemId ?? systemId,
                 HomeStationId = homeStation?.Id,
                 AreaSystemId = systemId,
@@ -281,9 +283,10 @@ public sealed class ScenarioContentBuilder(
 
         return new DefaultBehaviorRuntime
         {
-            Kind = "idle",
+            Kind = HoldPosition,
             HomeSystemId = homeStation?.SystemId ?? systemId,
             HomeStationId = homeStation?.Id,
+            AreaSystemId = homeStation?.SystemId ?? systemId,
         };
     }
 }

apps/backend/Universe/Scenario/SystemGenerationService.cs

@@ -520,6 +520,8 @@ public sealed class SystemGenerationService
     private static float Jitter(int index, int salt, float amplitude) =>
       (Hash01(index, salt) * 2f - 1f) * amplitude;
 
+    // Cheap deterministic pseudo-random helper: same (index, salt) pair always maps to the same 0..1 value.
+    // Generation code uses it instead of a mutable RNG so each procedural choice stays stable for a given seed.
     private static float Hash01(int index, int salt)
     {
         uint value = (uint)(index + 1);

apps/backend/Universe/Scenario/WorldRuntimeAssembler.cs

@@ -18,9 +18,6 @@ public sealed class WorldRuntimeAssembler(
         var policies = seedingService.CreatePolicies(factions);
         var commanders = seedingService.CreateCommanders(factions, content.Stations, content.Ships);
         var nowUtc = DateTimeOffset.UtcNow;
-        var playerFaction = worldGenerationOptions.GeneratePlayerFaction
-          ? seedingService.CreatePlayerFaction(factions, content.Stations, content.Ships, commanders, policies, nowUtc)
-          : null;
         var claims = seedingService.CreateClaims(content.Stations, topology.SpatialLayout.Celestials, nowUtc);
 
         var world = new SimulationWorld
@@ -34,7 +31,6 @@ public sealed class WorldRuntimeAssembler(
             Stations = content.Stations.ToList(),
             Ships = content.Ships.ToList(),
             Factions = factions,
-            PlayerFaction = playerFaction,
             Geopolitics = null,
             Commanders = commanders,
             Claims = claims,

apps/backend/Universe/Scenario/WorldSeedingService.cs

@@ -1,4 +1,5 @@
 using SpaceGame.Api.Universe.Bootstrap;
+using static SpaceGame.Api.Shared.Runtime.ShipBehaviorKinds;
 using static SpaceGame.Api.Universe.Scenario.LoaderSupport;
 
 namespace SpaceGame.Api.Universe.Scenario;
@@ -379,7 +380,7 @@ public sealed class WorldSeedingService(IStaticDataProvider staticData)
             Label = "Core Automation",
             ScopeKind = "player-faction",
             ScopeId = player.Id,
-            BehaviorKind = "idle",
+            BehaviorKind = Idle,
             UpdatedAtUtc = nowUtc,
         });
 
@@ -395,7 +396,7 @@ public sealed class WorldSeedingService(IStaticDataProvider staticData)
         return player;
     }
 
-    private FactionRuntime CreateFaction(string factionId)
+    internal FactionRuntime CreateFaction(string factionId)
     {
         if (!staticData.FactionDefinitions.TryGetValue(factionId, out var definition))
         {