- Add working-directory rule to root and all project docs
- Generalize root from "HTTP web services" to "independent projects"
- Add @../CLAUDE.md inheritance to nbd, edu, quotesdb project docs
- Remove sections duplicated from root in project-level docs
- Wrap all sections in semantic XML tags for clearer agent parsing
- Rename Tech Stack → Common Patterns (framed as defaults, not requirements)
- Rename Running Services Locally → Running Projects Locally