-- pg_turbovec v1.24.0 -- Phase G-2b: VACUUM + incremental INSERT for
-- the graph index kind (WITH (graph = true)).
--
-- This file is a *reference mirror*. The authoritative install
-- script is generated by `cargo pgrx schema`.
--
-- NO wire-format change. Wire format stays VERSION 6, byte-identical
-- to v1.23.0. Existing v4 (single-vector), v5 (ColBERT), and v6
-- (graph) indexes all decode unchanged. NO REINDEX needed for any
-- existing index.
--
-- What changed (binary-side only, no SQL surface change):
--
--   * ambulkdelete (VACUUM) against a graph index now uses the same
--     per-slot tombstone bitmap IVF already uses (previously raised
--     a clear ERROR). Tombstoned nodes never appear in scan results
--     and their out-edges are never traversed.
--
--   * aminsert against a graph index now works (previously raised a
--     clear ERROR). It is a deliberate whole-relfile rewrite per
--     insert -- O(n) per row, appropriate for the build-then-serve
--     model the graph kind targets. Heavy incremental churn should
--     still REINDEX periodically.
--
-- Two real bugs fixed along the way (see CHANGELOG.md for detail):
-- a tombstone-chain / graph-adjacency-chain block-offset collision
-- that corrupted a graph index on insert-after-VACUUM, and a VACUUM
-- entry-point fallback that missed the "entry point survives but all
-- its neighbors were tombstoned" dead-end case. Both are binary
-- fixes; neither changes the on-disk format.
--
-- Migration: `ALTER EXTENSION pg_turbovec UPDATE TO '1.24.0';`.
-- No REINDEX, no wire change, no SQL-surface change. Graph indexes
-- built under v1.23.0 can now be VACUUMed and inserted into in place.
--
-- Still deferred (unchanged from v1.23.0): G-2c (SIMD-optimized
-- traversal + build parallelism), G-2d (the 5M-scale AVX2
-- HNSW-latency gate measurement).
-- .