-- pg_turbovec 1.29.6 -> 1.29.7
-- Numerical-robustness patch (code-only): normalise_into no longer produces
-- +inf for a tiny-nonzero-norm vector (f32 reciprocal overflow). No wire
-- change (v7), no SQL surface change, no REINDEX. Intentionally empty but
-- MUST exist so ALTER EXTENSION pg_turbovec UPDATE TO '1.29.7' succeeds.