Codex CLI requires YAML frontmatter (---) in SKILL.md files.
6 skills were missing frontmatter entirely; laravel-verification had
a bare colon in its description causing an invalid YAML parse error.
Codex CLI resolves plugin paths relative to the home directory (~),
not relative to marketplace.json. The previous path "./everything-claude-code"
resolved to ~/everything-claude-code (non-existent), causing "plugin/read failed"
error in the TUI.