docs: update changelog for new features

CHANGELOG.md

@@ -7,12 +7,26 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Git commit message linting with gitlint and Conventional Commits format
+- Pre-commit hooks configuration with automatic code formatting, linting, and security scanning
+- Comprehensive contributing guidelines (`CONTRIBUTING.md`)
+- Manual commit message validation script (`scripts/lint-commit.py`)
+- Detailed commit message standards documentation
+
 ### Fixed
 
 - Remove redundant topic name extraction from tests
 - Improve JATS list tag conversion with sequential processing to handle ordered and unordered lists more robustly
 - Standardize package imports and configure explicit exports
 
+### Development
+
+- Added pre-commit integration with ruff, bandit, and gitlint
+- Updated development dependencies to include gitlint
+- Enhanced developer workflow with automated code quality checks
+
 ## [v2.0.2] - 2025-07-10
 
 ### Added