usage: okf tags [-h] [--limit LIMIT] [--singletons] [--register TAG DESCRIPTION]
[--validate TAG [TAG ...]] [--json]
list all tags with usage counts, or fuzzy-search candidate tags
query candidate tag(s) to fuzzy-search against the tag universe; omit for full
-h, --help show this help message and exit
--limit LIMIT max matches per candidate (default 8)
--singletons full-dump mode only: show tags used exactly once
--register TAG DESCRIPTION
add a tag to the TAGS.md registry (closed-vocabulary allow-list);
DESCRIPTION is required, max 150 chars; repeat the option for several tags
check tag(s) against TAGS.md; exit 1 if any are unregistered
--json print one JSON envelope {command, ok, data, warnings, error}