Update documentation with missing features and fix broken links
- Fix 10 broken documentation links (now point to docs/reference/)
- Add CLI commands for Registry, Collections, Project Dependencies, Config
- Add Project Dependencies section (cmdforge.yaml manifest)
- Add Collections section (curated tool bundles)
- Add Registry section (search, publish, moderation status)
- Add Tool Documentation section (cmdforge docs command)
- Update wiki with Collections, Registry, and Project Dependencies
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>