- Add REFERENCE.md to documentation protocol (Step 3)
- Update widget count to 37
- Update LOC to ~35K
- Add REFERENCE.md to file structure
- Remove obsolete roadmap sections (now in DEVELOPMENT_PLAN.md)
- Simplify documentation section with table
- Clean up references section
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>