Live FT search-index state for a namespace, read via FT.INFO.
FT.INFO
FT.INFO returned — the tag index exists and tag invalidation works.
FT.INFO threw "index not found" — invalidation degrades to TTL until a write self-heals it.
Couldn't determine (no cache layer wired, or a non-missing probe error).
Live FT search-index state for a namespace, read via
FT.INFO.