v2.1.3: bump and sync package versions (#59)

Re-release of v2.1.2 content — the v2.1.2 release workflow failed
mid-way (npm publish hit broken Node 22.22.2) leaving a stuck tag
that can't be deleted due to tag protection rules.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

v2.1.2: bump and sync package versions (#57)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

v2.1.1: bump and sync package versions (#49)

v2.1.0: bump and sync package versions

v2.0.0: bump and sync package versions

v1.7.1: bump and sync package versions

v1.7.0: bump and sync package versions

v1.6.3: bump and sync package versions

v1.6.2: bump and sync package versions

v1.6.1: bump and sync package versions