feat: VST3 preset data, project metadata, plugin registry fixes, and token cleanup
- Add VST3_PRESETS dict with base64 preset data for all 10 plugins (required by REAPER to load VST3)
- Fix VST3 registry: correct display names, filenames, and uniqueid GUIDs
- Add ~50 lines of REAPER project metadata (PANLAW, SAMPLERATE, METRONOME, etc.)
- Add 25 track attributes (PEAKCOL, BEAT, AUTOMODE, etc.) and FX chain metadata
- Remove unrecognized tokens (RENDER_CFG, PROJBAY, WAK) that caused REAPER warnings
- Update compose.py with section-based arrangement and registry key names
- Add SectionDef to schema
- 72 tests passing
53741b48b6