$ mkdir /tmp/skills && cp -r packs/variance-bridge /tmp/skills/ && rm -r /tmp/skills/variance-bridge/tests
$ python3 tools/library_manifest.py check /tmp/skills/variance-bridge
/tmp/skills/variance-bridge: matches variance-bridge 2.0.0 (15 files, sha256 ec1ee83dc924)
exit 0
$ echo x >> /tmp/skills/variance-bridge/_shared/executive-voice/SKILL.md
$ python3 tools/library_manifest.py check /tmp/skills/variance-bridge
/tmp/skills/variance-bridge: changed _shared/executive-voice/SKILL.md
/tmp/skills/variance-bridge: differs from variance-bridge 2.0.0: 1 file; reinstall from the library at its version
exit 1
