GHSA-74P7-6H78-GW8P skillctl: argument injection, path traversal in --dest, FIFO/device DoS, hardlink exfiltration, and commit-trailer forgery

Impact Following the path-safety patches in GHSA-wx3m-whqv-xv47 v0.1.2, a comprehensive multi-angle audit surfaced five further vulnerabilities, now patched in v0.1.3: 1. sourcesha argument injection in git ls-tree CRITICAL. InstalledSkill.sourcesha deserialized from .skills.toml committed,...