Create release v1.0.0

Author: cmenon12

docs/CHANGELOG.md

@@ -5,8 +5,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [1.0.0] - date tbc
+## [1.0.0] - 2025-08-28
 
 This is the first public release of the project.
 
-[1.0.0]: https://github.com/Capgemini/gov-prototype-by-prompt/releases/tag/1.0.0
+[1.0.0]: https://github.com/Capgemini/gov-prototype-by-prompt/releases/tag/v1.0.0