Add new asset type definitions:
- GfxWorld and related structures (cells, lights, probes)
- Menu system (menudef, itemdef, windowdef, listboxdef)
- Sound system (soundalias, soundfile, speakermap, sndcurve)
- D3D resources (vertex/index buffers)
- Font glyphs and expression entries
Update existing definitions with improved field annotations
and UI display properties.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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