Animations-Import, Massenimport-Queue, Asset-Archivierung, Voxel-Refactor

- Animations-Import: GLB wird direkt vom Ursprungspfad geladen (kein Zwischenkopieren), J3O in clips/ gespeichert
- RetargetingSystem: Translations-Tracks im Full-Retarget-Pfad erhalten (Hips-Y für sit_down)
- AnimationLibrary: lädt nur J3O, Clip-Name wird bei applyTo() auf Library-Key umbenannt
- SharedInput: animPreviewAddAnimPath → ConcurrentLinkedQueue animImportQueue (Massenimport-Fix)
- EditorApp: archiveOriginal() archiviert Originaldateien nach assets/imported/<assettyp>/
- EditorApp: Animations-Unterknoten im Asset-Baum zeigen enthaltene Clip-Namen
- Neue Animations-Clips: sit_down, get_up_sitting, sitting, pickup, sprinting u.a.
- Voxel: VoxelChunkState entfernt, VoxelChunkNode/MarchingCubes überarbeitet
- Map: Voxel-Chunks bereinigt, Terrain-Chunks aktualisiert

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

blight-assets/src/main/resources/animations/sets/human.animset.json

@@ -1,23 +1,33 @@
 {
   "clips": [
+    "get_up_sitting",
     "idle",
     "idle_jump",
+    "pickup",
     "running",
     "running_jump",
-    "sprint",
+    "sit_down",
+    "sitting",
+    "sitting_floor",
+    "sprinting",
     "stand_up",
     "tpose",
-    "walking",
-    "pickup"
+    "walking"
   ],
   "actionMap": {
     "DEFAULT": "tpose",
     "IDLE": "idle",
     "WALK": "walking",
     "RUN": "running",
-    "SPRINT": "sprint",
-    "JUMP": "idle_jump",
+    "SPRINT": "sprinting",
     "RUNNING_JUMP": "running_jump",
-    "PICK_UP": "pickup"
-  }
+    "JUMP": "idle_jump",
+    "PICK_UP": "pickup",
+    "SIT_DOWN": "sit_down",
+    "SIT_UP": "stand_up",
+    "SITTING": "sitting"
+  },
+  "previewModelPath": "Models/Chars/mainchar.j3o",
+  "sinkMap": {},
+  "anchorBoneMap": {}
 }