male(v15): Tripo mesh + Meshy rig, UAL retarget test beds

- male/: raw + z-facing + quat-named bodies, Meshy rigged GLB/FBX,
  stock walk/run clips, male-ual-clips.glb (16 UAL1 clips baked via
  ariki-game mixamo_retarget.py --map ual)
- anim_male.tscn: Meshy stock clips; anim_male_ual.tscn: UAL clips
  (scales position keys x100 — Meshy skeleton is cm, clips are m)
- view_tripo.tscn: env-var GLB turntable/anim shots + interactive orbit
- rotate_glb.gd: headless face-+Z/height fixup (Meshy pose estimation
  rejects Tripo's +X-facing normalized output)
- Meshy spine chain is reverse-named: Spine02 = lowest vertebra

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

rotate_glb.gd

@@ -0,0 +1,67 @@
+# Headless GLB fixup: rotate a model to face +Z and scale to a target height,
+# baking the transform into vertices via the root node transform on export.
+# Env: ROT_IN (glb path), ROT_OUT (glb path), ROT_YAW_DEG, ROT_HEIGHT_M
+extends SceneTree
+
+func _init() -> void:
+	var in_path := OS.get_environment("ROT_IN")
+	var out_path := OS.get_environment("ROT_OUT")
+	var yaw_deg := float(OS.get_environment("ROT_YAW_DEG"))
+	var target_h := float(OS.get_environment("ROT_HEIGHT_M"))
+
+	var doc := GLTFDocument.new()
+	var state := GLTFState.new()
+	if doc.append_from_file(in_path, state) != OK:
+		push_error("load failed: " + in_path)
+		quit(1)
+		return
+	var scene := doc.generate_scene(state)
+
+	# measure current height from merged mesh AABB
+	var merged := AABB()
+	var first := true
+	var stack: Array = [scene]
+	while not stack.is_empty():
+		var n: Node = stack.pop_back()
+		if n is MeshInstance3D:
+			var box: AABB = (n as MeshInstance3D).get_aabb()
+			if first:
+				merged = box
+				first = false
+			else:
+				merged = merged.merge(box)
+		for c in n.get_children():
+			stack.push_back(c)
+	var h := merged.size.y
+	var s := target_h / h if h > 0.001 else 1.0
+	print("height=", h, " scale=", s)
+
+	var wrapper := Node3D.new()
+	wrapper.name = "Root"
+	wrapper.rotate_y(deg_to_rad(yaw_deg))
+	wrapper.scale = Vector3(s, s, s)
+	# move model so feet sit at y=0 after scaling
+	scene.position.y = -merged.position.y
+	var parent := scene.get_parent()
+	if parent != null:
+		parent.remove_child(scene)
+	wrapper.add_child(scene)
+	_own_recursive(scene, wrapper)
+
+	var out_doc := GLTFDocument.new()
+	var out_state := GLTFState.new()
+	if out_doc.append_from_scene(wrapper, out_state) != OK:
+		push_error("export append failed")
+		quit(1)
+		return
+	if out_doc.write_to_filesystem(out_state, out_path) != OK:
+		push_error("write failed: " + out_path)
+		quit(1)
+		return
+	print("WROTE ", out_path)
+	quit(0)
+
+func _own_recursive(n: Node, owner: Node) -> void:
+	n.owner = owner
+	for c in n.get_children():
+		_own_recursive(c, owner)