v0.0.6

What's Changed

• ci: SHA-pin GitHub Actions to immutable commits (supply-chain hardening) by @smaniches in #58
• Consistency and metadata cleanup: reconcile claim counts, fix stale docstring, remove dropped service scaffolding by @smaniches in #59
• chore(release): cut v0.0.6 by @smaniches in #60
• chore: add Dependabot config and Code of Conduct by @smaniches in #61
• fix: silence torch sparse-tensor UserWarning in sparse_scipy_to_torch by @smaniches in #67
• docs(changelog): fold the #67 warning fix into the 0.0.6 release notes by @smaniches in #68
• ci: auto-tag releases on version-bump merge to main by @smaniches in #69

Full Changelog: v0.0.5...v0.0.6