STEP 0 (CANONICAL PATH SELF-CHECK) used to force any SKILL.md load that wasn't
under $HOME/.claude/plugins/cache/last30days-skill/last30days/{version}/ to
re-Read from there. That guard is Claude-Code-specific (defends against the
marketplaces/ stale-clone bug) and broke under non-Claude installers like
`npx skills add`, ~/.codex/skills/, and ~/.agents/skills/.
The new STEP 0 narrows the check to its actual target: fire only when the
loaded SKILL.md path contains /.claude/plugins/marketplaces/. Every other
install path is trusted. The 2026-04-22 incident workaround is preserved
without breaking other harnesses.
Step 1 SKILL_ROOT resolver collapses the Codex-first / Claude-fallback /
CWD-fallback chain into a single precedence walk: Claude plugin cache
(versioned) first, then ~/.codex/skills, ~/.agents/skills, repo checkout,
./.skills/last30days (npx skills install dir), CWD, and GEMINI_EXTENSION_DIR.
Also drops Codex native plugin support: .codex-plugin/plugin.json is deleted,
the badge VERSION jq fallback in line 108 stops looking at it, and render.py's
_skill_version no longer scans for it. Codex users install via `npx skills add`
or the per-harness skill dir going forward.
render.py::_skill_version gains a SKILL.md frontmatter fallback so the badge
no longer emits `v?` on install dirs that sync.sh populates (which don't
include .claude-plugin/plugin.json).
Trevin Chow
c913e1cf89