Add a shared `profile_search_policy` probe in buzz-db that reads the live
`events.search_tsv` expression, warn at relay startup while a populated
database still indexes whole kind-0 JSON, and expose the same probe as
`buzz-admin profile-search-policy`. Bound 0056's lock wait with a 5s
lock_timeout and document the operator procedure in
docs/profile-search-deployment.md.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Signed-off-by: Matt Toohey <contact@matttoohey.com>