- Add /llms.txt endpoint following llmstxt.org specification format
- Change raw markdown URL from /spec/{version}/raw.md to
/spec/git-common-flow-v{version}.md to match download filename
- Add <link rel="alternate"> for raw markdown in spec pages
- Add Raw button to markdown view page
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>