Documentation

[pento]

Update documentation across the repo to cover the WordPress plugin, channel architecture, and command protocol.

Plugin README

wordpress-plugin/readme.txt (already stubbed in #29) — flesh out with:

• Description of what the plugin does
• Requirements (WordPress 7.0+ or Gutenberg 22.8+, Claude Code with claudaborative-editing MCP)
• Installation instructions (manual upload from bundled zip, or wordpress.org once listed)
• Usage guide: sidebar panel, command palette, note actions
• FAQ section

Repo README

Update the root README.md:

• Mention the WordPress plugin and its purpose
• Link to the plugin's readme for details
• Update architecture diagram to include the plugin and channel layer

CLAUDE.md

Update CLAUDE.md with:

• Plugin directory structure and build commands
• Command protocol overview (REST endpoints, SSE, command lifecycle)
• Channel capability and notification format
• How the command listener works (SSE primary, polling fallback, independent of sync loop)
• New tools (wp_update_command_status, wp_install_editor_plugin)
• New MCP prompts if any (e.g., pre-publish-check from Pre-publish checks via Claude #34)

Acceptance Criteria

• Plugin readme is complete and suitable for wordpress.org listing
• Repo README references the plugin
• CLAUDE.md covers the plugin architecture, command protocol, and new tools
• All new build commands documented (npm run build in plugin, wp dist-archive, etc.)

Part of #28.