Empties joinery's in-session embedding cache, and optionally the on-disk cache. The cache stores raw embedding vectors so that the data.table and tibble backends reuse them instead of re-embedding on every call. You rarely need to call this by hand; it is mainly useful to force a clean re-embed or to reclaim memory in a long-running session.
See also
compute_embeddings() for how the cache is filled, and
joinery (package options) for joinery.embedding_reuse and
joinery.embedding_cache_dir.
