Delete 17 tracked *.tmp editor autosaves and three verified-unreferenced
orphans (Assets/bear_level.tscn, Assets/matador_2.tscn, matador_2.gd), and
gitignore *.tmp so they never return. The real Assets/bear_level_arena.glb is
kept — it still backs levels/bear_level.tscn.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CmG3mQGVXZUPDVapmdbWZ1