v0.6.1 — align plugin.json manifest with release tag
Version-manifest alignment. The v0.6.0 release tag was cut with .claude-plugin/plugin.json still reporting 0.5.2, so installers of harness-kit@0.6.0 saw a manifest that mis-reported its own version. This patch bumps the manifest to match the release and closes the drift.
Fixed
plugin.jsonversionbumped0.5.2→0.6.1to align the plugin manifest with the published release tag and CHANGELOG (the CI version-coherence gate now passes).