v0.2.0

What's Changed

• feat(observ): metrics for versions-index freshness and pre-warm by @pascalinthecloud in #5
• feat(cache): size-bounded LRU eviction for the local cache by @pascalinthecloud in #6
• perf(cache): skip read-path mtime touch when eviction is off; two-pas… by @pascalinthecloud in #7
• ci: release workflow — multi-arch GHCR image, SBOM, provenance, cosign by @pascalinthecloud in #8
• ci: bump GitHub Actions to Node 24 runtime majors by @pascalinthecloud in #9
• feat(mirror): coalesce concurrent cold requests (singleflight) by @pascalinthecloud in #10
• feat(helm): multi-replica HA mode (S3-backed) by @pascalinthecloud in #11
• docs: open-source hygiene (CoC, changelog, templates, dependabot) by @pascalinthecloud in #12
• chore(release): land v0.2.0 prep + cosign fix on main by @pascalinthecloud in #15

Full Changelog: v0.1.0...v0.2.0