Assets: real Synty models for ore/turret/structures; base-field + schedule wiring

Replace every placeholder-cube ghost prefab with nested Synty (PolygonFantasyKingdom) models: ResourceNode->crystal, Turret->ballista, Wall->spike palisade, Pylon->crystal beacon, Storage->chest, UpgradePickup->gem, BlightClutter->rock chunk (nest as a Model child, strip colliders, reset the [GhostField] root Scale, atlas for bare FBXs). Gameplay subscene: place the BaseFieldSpawner, trim Harvester/Fabricator/Conveyor from the build palette. CycleDirector prefab bakes the schedule siege config. See DR-031.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Assets/_Project/Prefabs/CycleDirector.prefab

@@ -71,7 +71,7 @@ MonoBehaviour:
   OptimizationMode: 0
   Importance: 1
   MaxSendRate: 0
-  prefabId: 
+  prefabId: 529ca7203da40f5489e9e3040ed1fc22
 --- !u!114 &5858859957262695065
 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -84,3 +84,11 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 843fd0d567f48ad46840dcce0ce84bbc, type: 3}
   m_Name: 
   m_EditorClassIdentifier: ProjectM.Authoring::ProjectM.Authoring.CycleDirectorAuthoring
+  PostExpeditionEnabled: 1
+  PostExpeditionDelayTicks: 300
+  SiegeSizeBase: 5
+  SiegeSizePerResource: 0
+  SiegeTimeoutTicks: 3600
+  ScheduleEnabled: 1
+  ScheduleIntervalTicks: 2700
+  ScheduleSizePerWave: 1