Add tangled.org tree links to README.md generation
Parse origin remote URL to generate hyperlinks to branch trees on
tangled.org. Links are URL-encoded (/ -> %2F) and added to:
- Project names (linking to project/* branches)
- Package names (linking to opam/patches/* branches)
- Git repo names (linking to git/patches/* branches)
- Merged Into columns (linking to project branches)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>