update changelog

Author: JeanMainguy

CHANGELOG.md

@@ -5,4 +5,13 @@ 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).
 
-## [Unreleased]
+
+## [v1.0.0] – 2025-04-29
+
+### Added
+
+- Support for parsing genome annotations in **GFF** format and protein sequences in **FAA** format.
+- TA annotation of CDS using **pyhmmer** and curated **HMM profiles**.
+- Grouping of CDS hits into putative **toxin-antitoxin systems** based on genomic proximity.
+- Export of annotated CDS hits and metadata to a **TSV file**.
+- Command-line interface (**CLI**) with arguments for input files, thresholds, and output configuration.