Amend changelog.md, contributors.md

Author: finite-state-machine

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Fixed
+
+- Fixed `@auto` to be safe with `tuple`-valued positionals https://github.com/Textualize/rich/pull/4014
+
 ## [14.3.3] - 2026-02-19
 
 ### Fixed

CONTRIBUTORS.md

@@ -100,3 +100,4 @@ The following people have contributed to the development of Rich:
 - [Brandon Capener](https://github.com/bcapener)
 - [Alex Zheng](https://github.com/alexzheng111)
 - [Sebastian Speitel](https://github.com/SebastianSpeitel)
+- [David S.](https://github.com/finite-state-machine)