chore: bump version to v1.0.0 (#59)

* chore: bump version to v1.0.0

* Update CHANGELOG.md

* Update package.json

* Update VERSION

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Darren Hinde <107584450+darrenhinde@users.noreply.github.com>

CHANGELOG.md

@@ -3,6 +3,11 @@
 All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
+## [0.5.0] - 2025-12-18
+
+### Changes
+- refactor(evals): consolidate documentation and enhance test infrastructure (#56)
+
 
 ### Added
 - **Explicit Context File Validation**: New `expectedContextFiles` field in test YAML files allows explicit specification of which context files the agent must read