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>

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