Function scanAllAgents

pkg/cmd/skills/update/update.go:524–548

scanAllAgents walks every registered agent's skill directory (project + user scope) and collects installed skills. Shared install roots are scanned only once.

(gitRoot, homeDir string)

// scanAllAgents walks every registered agent's skill directory (project + user scope) and
// collects installed skills. Shared install roots are scanned only once.
func scanAllAgents(gitRoot, homeDir string) []installedSkill {
	scannedDirs := make(map[string]bool)
	var all []installedSkill

	for i := range registry.Agents {
		host := &registry.Agents[i]
		for _, scope := range []registry.Scope{registry.ScopeProject, registry.ScopeUser} {
			dir, err := host.InstallDir(scope, gitRoot, homeDir)
			if err != nil {
				continue
			}
			if scannedDirs[dir] {
				continue
			}
			scannedDirs[dir] = true
			skills, err := scanInstalledSkills(dir, host, scope)
			if err != nil {
				continue
			}
			all = append(all, skills...)
		}
	}

	return all
}

// scanInstalledSkills reads all SKILL.md files in a skills directory and
// extracts GitHub metadata from their frontmatter. It handles both flat