Merge pull request #276 from TIGER-AI-Lab/docs/update-changelog

docs: update changelog

Author: Perry2004

CHANGELOG.md

@@ -6,7 +6,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](https://semver.org/).
 
-## [Unreleased]
+## [0.8.0] - 2026-08-01
 ### Added
 - Added support for remote browsers with CDP connection.
 - Added a preflight API call to check if the LLM API is valid before starting actual tasks.