-- 1.29.3 — runtime hardening patch (no wire-format change, no SQL surface
-- change, no REINDEX). Adversarial-input OOM guards on the sparsevec
-- densify paths (::vector cast + sum(sparsevec) reject dim > 16000 before
-- allocating), clean ERROR (not a Rust panic across FFI) on a torn/corrupt
-- scan slot lookup, and an interrupt poll in the VACUUM swap-remove loop so
-- a large VACUUM stays cancellable. Fixes live entirely in the binary; this
-- migration is intentionally empty.