-- pg_trickle 0.29.0 → 0.30.0 upgrade migration
-- ============================================
--
-- v0.30.0 — Pre-GA Correctness & Stability Sprint
--
-- This migration has no schema changes.  All v0.30.0 improvements are
-- confined to Rust extension code (GUC registrations, phantom cleanup,
-- snapshot atomicity, parser guards, error classification).  The
-- pg_trickle catalog tables and SQL API are unchanged from v0.29.0.
--
-- New GUCs (set in postgresql.conf or ALTER SYSTEM):
--   pg_trickle.use_sqlstate_classification  — opt-in SQLSTATE-based retry
--   pg_trickle.template_cache_max_age_hours — L2 cache entry TTL (default 168)
--   pg_trickle.max_parse_nodes              — parser node-count guard (0=off)

-- No DDL changes required for this version upgrade.