chore: bump to v0.5.1 and update CHANGELOG

Author: t0kubetsu

CHANGELOG.md

@@ -9,6 +9,10 @@ Version numbers follow [Semantic Versioning](https://semver.org/spec/v2.0.0.html
 
 ## [Unreleased]
 
+---
+
+## [0.5.1] — 2026-05-15
+
 ### Changed
 - `pyproject.toml`: corrected `authors` field to `t0kubetsu` (consistent
   with all other platform modules).
@@ -145,7 +149,8 @@ Version numbers follow [Semantic Versioning](https://semver.org/spec/v2.0.0.html
 
 ---
 
-[Unreleased]: https://github.com/NC3-TestingPlatform/quantumvalidator/compare/v0.5.0...HEAD
+[Unreleased]: https://github.com/NC3-TestingPlatform/quantumvalidator/compare/v0.5.1...HEAD
+[0.5.1]: https://github.com/NC3-TestingPlatform/quantumvalidator/compare/v0.5.0...v0.5.1
 [0.5.0]: https://github.com/NC3-TestingPlatform/quantumvalidator/compare/v0.4.0...v0.5.0
 [0.4.0]: https://github.com/NC3-TestingPlatform/quantumvalidator/compare/v0.3.0...v0.4.0
 [0.3.0]: https://github.com/NC3-TestingPlatform/quantumvalidator/compare/v0.2.0...v0.3.0

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "quantumvalidator"
-version = "0.5.0"
+version = "0.5.1"
 description = "Quantum-safe cryptography validator — TLS, STARTTLS, and SSH post-quantum readiness assessment"
 readme = "README.md"
 requires-python = ">=3.11"

quantumvalidator/__init__.py

@@ -5,7 +5,7 @@
 try:
     __version__ = version("quantumvalidator")
 except PackageNotFoundError:  # pragma: no cover
-    __version__ = "0.5.0"
+    __version__ = "0.5.1"
 
 import logging as _logging