Reads a Control Hub "Meetings Inactive Users" CSV, filters to
IS_HOST=Y AND DAYS_SINCE_LAST_ACTIVE > --min-days (default 120),
cross-references against the current holders of --host-license-id
(so no per-user /people lookup), then PATCHes /v1/licenses/users to
atomically remove the host license and either (a) add a specific
free-tier license (--free-license-id) or (b) add attendee-only
siteUrl on --site (--free-attendee).
Dry-run by default; enumerates every license on the site so the
operator can pick the free tier. Bounded concurrency with 429/503
retry, optional --offset/--limit for staged rollouts, per-user
outcome CSV via --report, and full audit trail via the existing
webex:reclaim:audit log scope.
Whitelisted in .gitignore so it stays version-controlled alongside
the other tracked operational scripts.
