Implement playable Mac client and rendering validation

project/ui/mob_view.gd

@@ -98,6 +98,9 @@ func build(assets_root: String, proto: Node, race: int, pump := Callable()) -> b
 	if pump.is_valid(): pump.call()
 	model = ClassDB.instantiate("Metin2Model")
 	model.name = "Metin2Model"
+	# NPC/monster GR2 uses the same source winding as PCs. Without conversion,
+	# back-face culling exposes interiors and hides the outward-facing surfaces.
+	model.set("flip_winding", true)
 	model.set("texture_dir", _dir)
 	model.set("gr2_path", gr2)               # 重：解 gr2 + 建网格
 	if pump.is_valid(): pump.call()
@@ -129,6 +132,12 @@ func set_anim_state(s: String) -> void:
 	anim.set("anim_path", msa)
 	_refresh_sound_script(msa)
 
+# Read-only motion resolver used by the forest acceptance harness. Returning
+# the selected .msa before playback lets the test distinguish a real action
+# from a silent "keep the previous animation" fallback.
+func get_motion_path(state: String) -> String:
+	return _motion_for(state)
+
 func _process(_delta: float) -> void:
 	if _audio == null or anim == null or _sound_instances.is_empty() or not anim.has_method("get_time") \
 			or not bool(anim.get("playing")):