v0.6.2

Fixed

• scp-style repository URLs (git@github.com:owner/repo.git) normalize
  correctly in SEO titles instead of leaking the git@host: prefix
  (#121, thanks @hkJerryLeung).
• step_by_step.md now carries a distinct SEO title from tutorial.md, so
  the two published pages no longer compete for the same search snippet
  (#134, thanks @cnYui).
• Installer-URL phase tagging is word-anchored: URLs merely containing the
  substring "install" (installer.tar.gz, reinstall-notes.txt) no longer
  classify as setup steps (#122, thanks @hkJerryLeung).

Removed

• Dead Sandbox.commit() method — zero call sites, no behavior change
  (#82, thanks @professor314).

Changed

• Docs: the documented pipeline stage order matches manifest.STAGES
  (verify → tutorial → render) across README, CONTRIBUTING, ROADMAP, and the
  bug-report template (#120, thanks @cnYui); README gained an auto-updating
  contributors section (#136).
• CI: bump actions/setup-python to 6 (#34) and actions/download-artifact
  to 8 (#35) — the v4-upload/v8-download artifact pairing in release.yml is
  cross-compatible (verified against the v8 compatibility matrix before
  merge).