The vector_store_registry block in litellm-config.yaml only seeds the
store into litellm's in-memory registry at boot — the Admin UI's Vector
Stores page (/ui/vector-stores) reads litellm's own DB
(LiteLLM_ManagedVectorStoresTable) instead, via /vector_store/list. A
config-only entry there gets silently deleted from memory the first time
anyone loads that page, since /vector_store/list treats the DB as the
source of truth and removes anything not also present there.
update.sh now registers it in the DB too, via POST /vector_store/new
(idempotent, same pattern as the existing virtual-key minting) — with the
literal resolved key, not the os.environ/... form used in
litellm-config.yaml, since the management API doesn't do config.yaml-style
substitution on request bodies.
Found in the process: /vector_store/update in this litellm version can't
touch litellm_params at all (VectorStoreUpdateRequest has no such field,
so PGVECTOR_API_KEY sent through it is silently dropped) — worth knowing
if this key ever needs rotating; documented in update.sh's comment.
Verified live: registered via the API, confirmed the row appears in
/vector_store/list (what the Admin UI page reads) with the real key, and
re-verified search still works end-to-end afterward.