Postgres ships with full text search. You do not need a separate search cluster for most apps.

alter table notes add column fts tsvector
  generated always as (to_tsvector('english', body)) stored;

create index notes_fts on notes using gin (fts);

Query it from the client:

const { data } = await basalt
  .from('notes')
  .select()
  .textSearch('fts', 'foundation & walls')