paper-spine-update

No direct evidence of overt malicious behavior (e.g., reverse shells, data exfiltration, credential theft) is present in this module. However, the updater/install mechanism has a significant security weakness: ZIP archives are extracted with ZipFile.extractall() without path sanitization (Zip Slip risk), and downloaded artifacts are not cryptographically verified (no signature/hash/commit pinning). Combined with install-time overwrite/delete into user-configurable directories, a compromised manifest/archive (or malicious --repo-archive) could result in arbitrary filesystem modification during extraction and/or installation of malicious plugin/skill content.