Surfaces the usage_report()/provenance() data layer added in #36701 as a
user-facing CLI command. Unlike `hermes curator status` (scoped to
curator-managed agent-created candidates), `usage` lists every skill on disk
— bundled built-ins and hub-installed included — with per-skill use/view/patch
counts and an agent/bundled/hub provenance tag.
Flags: --sort {activity,recent,name}, --provenance {agent,bundled,hub} filter,
--json for machine-readable output.
