* feat(#52): add agent_skills_security.trusted_global_roots allowlist
Opt-in allowlist so a global: agent skill whose SKILL.md realpath resolves
outside the default global skills base (e.g. ~/.claude/skills) is accepted
when its real target lies under a user-declared trusted root. Default [] is
byte-identical to prior behavior; the symlink-escape guard is preserved and
simply re-applied against each declared root.
- src/security.cts: loadTrustedGlobalRoots — tilde-expand (~ and ~/), reject
project-relative and dangerously broad roots (filesystem/UNC root, homedir),
realpath-canonicalize each root every run and drop non-existent ones.
- src/init.cts: on base-check failure the guard consults the trusted roots
(hoisted out of the loop); emits a stderr NOTE when a skill is accepted via
a trusted root so the widened boundary is visible.
- src/core.cts: thread agent_skills_security through loadConfig.
- config-schema.manifest.json: allow the new key path.
- docs/CONFIGURATION.md: document the option and its security model.
- tests/agent-skills.test.cjs: unit + end-to-end CLI coverage (regression,
feature, negative, broad-root hardening, stderr NOTE).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* docs(#52): add changeset fragment for trusted_global_roots (#754)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
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