docs: prepare 0.53.9 changelog

Author: lmeyerov

CHANGELOG.md

@@ -5,8 +5,7 @@ All notable changes to the PyGraphistry are documented in this file. The PyGraph
 The changelog format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html) and all PyGraphistry-specific breaking changes are explictly noted here.
 
-## [Development]
-<!-- Do Not Erase This Section - Used for tracking unreleased changes -->
+## [0.53.9 - 2026-03-31]
 
 ### Fixed
 - **GFQL / Cypher**: Added bounded direct local Cypher reentry support for the vectorized same-alias `MATCH ... WITH ... MATCH ...` subset, including carried scalar projections and trailing `RETURN` / `ORDER BY` use on the carried alias. Unsupported cross-alias, fresh row-seeded, and prefix-order-dependent shapes now fail fast instead of silently miscompiling.