fix(client): address PR #95 review — 8 items

SLOT_TO_BONE expanded to 12 slots (earring_l/r, necklace, wrist_l/r).
_clear() outline teardown ordering fixed. toon_masked.gdshader: removed
cull_disabled, added ALPHA output. _attach_to_bone() returns node instead
of bool. skin_tone clamped in from_dict(). D-160 segment count 15→17.
Blender scripts: docstrings + __main__ guards. Reload test tightened.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tooling/blender_list_animations.py

@@ -16,6 +16,10 @@ if __name__ == "__main__":
         sys.exit(1)
 
     args = argv[argv.index("--") + 1:]
+    if len(args) < 1:
+        print("ERROR: Provide a GLB/GLTF path.")
+        sys.exit(1)
+
     input_path = args[0]
 
     bpy.ops.wm.read_factory_settings(use_empty=True)

tooling/blender_list_bones.py

@@ -1,10 +1,37 @@
+"""
+blender_list_bones.py
+Usage: tooling/blender --background --python tooling/blender_list_bones.py -- <input.glb>
+
+Lists all bone names in a GLB/GLTF armature, sorted alphabetically.
+Used to verify bone naming after the January 2026 Quaternius naming update.
+"""
+
 import sys
 import bpy
 
-bpy.ops.wm.read_factory_settings(use_empty=True)
-bpy.ops.import_scene.gltf(filepath=sys.argv[sys.argv.index("--") + 1])
-for obj in bpy.context.scene.objects:
-    if obj.type == 'ARMATURE':
-        for b in sorted(obj.data.bones, key=lambda x: x.name):
-            print("BONE: " + b.name)
-        break
+
+if __name__ == "__main__":
+    argv = sys.argv
+    if "--" not in argv:
+        print("Usage: tooling/blender --background --python tooling/blender_list_bones.py -- <input.glb>")
+        sys.exit(1)
+
+    args = argv[argv.index("--") + 1:]
+    if len(args) < 1:
+        print("ERROR: Provide a GLB/GLTF path.")
+        sys.exit(1)
+
+    input_path = args[0]
+
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    bpy.ops.import_scene.gltf(filepath=input_path)
+
+    for obj in bpy.context.scene.objects:
+        if obj.type == 'ARMATURE':
+            print(f"ARMATURE: {obj.name} — {len(obj.data.bones)} bones")
+            for b in sorted(obj.data.bones, key=lambda x: x.name):
+                print("BONE: " + b.name)
+            break
+    else:
+        print("ERROR: No armature found in the imported file.")
+        sys.exit(1)