Update mdbook documentation to reflect current project state (M6-M13) (litmus-iqfq)
Rewrite docs: update intro/milestones, add architecture/development/agentic-workflow pages, delete contributing.md placeholder
Summary of Changes
- introduction.md: Added current scale (29 themes, 15 families, 8 scenes, 3 crates), project status section
- architecture.md: New — workspace layout, data model, scene system, web app, accessibility/CVD
- development.md: New — replaces contributing.md, covers prerequisites, quick start, mise tasks, dev loop
- development/adding-themes.md: New — step-by-step guide with TOML format, themes.rs registration, family setup
- development/adding-scenes.md: New — guide covering ThemeColor, StyledSpan API, scene registration
- milestones.md: Rewritten — M0-M13 in past tense, removed Post-MVP section
- agentic-workflow.md: New — documents Claude Code + beans development process
- SUMMARY.md: Updated with new book structure
- contributing.md: Deleted (replaced by development.md)
- mdbook builds cleanly with no broken links