- docs/: 6 development documents (PRD, tech selection, architecture, risks, roadmap, design workflow) - research/: FIRE background materials, personal plan, Excel calculator - 03-架构设计.md: add Section 8 documenting WSL2 → Windows browser dev environment (Vite host config, access URLs, mobile debugging tip) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>