doc: update changelod

Author: TeddyHuang-00

CHANGELOG.md

@@ -2,12 +2,22 @@
 
 All notable changes to this project will be documented in this file.
 
-## [unreleased]
+## [0.4.0] - 2026-06-14
 
 ### 🚀 Features
 
 - Add SSH agent authentication support
 
+### 🎨 Styling
+
+- Format code
+
+### ⚙️ Miscellaneous Tasks
+
+- Bump version to 0.4.0
+
+## [0.3.2] - 2026-06-14
+
 ### 🐛 Bug Fixes
 
 - Use checked_div instead of manual checking