Add CLAUDE.md documentation for site structure and workflow

[steveya]

Summary

This PR adds comprehensive documentation for the Quarto-based static website project. The new CLAUDE.md file serves as a reference guide for understanding the project structure, build process, and content creation workflows.

Key changes

• Added CLAUDE.md — A detailed project guide covering:
  • Project overview (Quarto 1.5+, GitHub Pages deployment, static code blocks)
  • Complete repository structure with directory descriptions
  • Common build and preview commands
  • CI/CD pipeline details (GitHub Actions, Playwright E2E tests)
  • Post creation workflow including the "stealth notebook" pattern for private drafting
  • Index generation process for series, notes, projects, and categories
  • Citation and bibliography management via BibTeX
  • Styling conventions (custom CSS, color palette, plot styles)
  • Strict writing and prose requirements (tone, structure, math notation, derivations)
  • Key naming conventions and deployment details

Implementation details

The documentation captures the current state of the project including:

• Build pipeline with pre-render hooks that auto-generate index pages
• Quarto configuration with disabled code execution
• GitHub Pages deployment from the docs/ directory
• Playwright-based smoke testing for search and bibliography rendering
• Custom Python utilities for post scaffolding and notebook preview
• Shared bibliography system via posts/_metadata.yml
• Strict editorial guidelines for academic writing standards

This guide is intended to help contributors and maintainers understand the project architecture and follow established conventions.

https://claude.ai/code/session_01Rmv69DpeqNmht9UqpwsqvC