chore(release): bump version to v0.5.5

Version bump for security hardening release:
- S/Kademlia Sybil resistance (SEC-001)
- DHT privacy enhancement (SEC-002)
- STUN MESSAGE-INTEGRITY (SEC-003)
- 28 new security tests
- Total: 869 tests passing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: doublegate

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to WRAITH Protocol 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]
+## [0.5.5] - 2025-11-30
 
 ### Security
 
@@ -1802,7 +1802,8 @@ Fixes applied:
 
 ---
 
-[Unreleased]: https://github.com/doublegate/WRAITH-Protocol/compare/v0.5.0...HEAD
+[Unreleased]: https://github.com/doublegate/WRAITH-Protocol/compare/v0.5.5...HEAD
+[0.5.5]: https://github.com/doublegate/WRAITH-Protocol/compare/v0.5.0...v0.5.5
 [0.5.0]: https://github.com/doublegate/WRAITH-Protocol/compare/v0.4.8...v0.5.0
 [0.4.8]: https://github.com/doublegate/WRAITH-Protocol/compare/v0.4.5...v0.4.8
 [0.4.5]: https://github.com/doublegate/WRAITH-Protocol/compare/v0.4.0...v0.4.5

Cargo.toml

@@ -22,7 +22,7 @@ members = [
 exclude = ["crates/wraith-xdp"]
 
 [workspace.package]
-version = "0.5.0"
+version = "0.5.5"
 edition = "2024"
 rust-version = "1.85"
 license = "MIT"

README.md

@@ -9,14 +9,14 @@ A decentralized secure file transfer protocol optimized for high-throughput, low
 [![CI Status](https://github.com/doublegate/WRAITH-Protocol/actions/workflows/ci.yml/badge.svg)](https://github.com/doublegate/WRAITH-Protocol/actions/workflows/ci.yml)
 [![CodeQL](https://github.com/doublegate/WRAITH-Protocol/actions/workflows/codeql.yml/badge.svg)](https://github.com/doublegate/WRAITH-Protocol/actions/workflows/codeql.yml)
 [![Release](https://github.com/doublegate/WRAITH-Protocol/actions/workflows/release.yml/badge.svg)](https://github.com/doublegate/WRAITH-Protocol/actions/workflows/release.yml)
-[![Version](https://img.shields.io/badge/version-0.5.0-blue.svg)](https://github.com/doublegate/WRAITH-Protocol/releases)
+[![Version](https://img.shields.io/badge/version-0.5.5-blue.svg)](https://github.com/doublegate/WRAITH-Protocol/releases)
 [![Rust](https://img.shields.io/badge/rust-1.85%2B-orange.svg)](https://www.rust-lang.org/)
 [![Edition](https://img.shields.io/badge/edition-2024-orange.svg)](https://doc.rust-lang.org/edition-guide/rust-2024/index.html)
 [![License](https://img.shields.io/badge/license-MIT-green.svg)](LICENSE)
 
 ## Current Status
 
-**Version:** 0.5.0 (Phase 5 Complete - Discovery & NAT Traversal) | **Phase 6 Ready ✅**
+**Version:** 0.5.5 (Security Hardening Release) | **Phase 6 Ready ✅**
 
 WRAITH Protocol has completed Phases 1-5, delivering a fully functional core protocol, cryptographic layer, high-performance transport implementation, optimization and hardening, comprehensive traffic obfuscation, and complete peer discovery with NAT traversal. The latest release includes AF_XDP kernel bypass with zero-copy I/O, BBR pacing enforcement, io_uring async file I/O, frame validation hardening, complete traffic obfuscation with TLS/WebSocket/DoH mimicry, privacy-enhanced Kademlia DHT, STUN/ICE NAT traversal, and DERP-style relay infrastructure.
 
@@ -692,4 +692,4 @@ WRAITH Protocol builds on the work of many excellent projects and technologies:
 
 **WRAITH Protocol** - *Secure. Fast. Invisible.*
 
-**Status:** Phase 5 Complete (v0.5.0), Phase 6 Ready ✅ | **License:** MIT | **Language:** Rust 2024 | **Tests:** 869 | **Quality:** Grade A (92/100), 14% debt ratio, 100% unsafe docs, 69% protocol complete (546/789 SP)
+**Status:** Phase 5 Complete (v0.5.5), Phase 6 Ready ✅ | **License:** MIT | **Language:** Rust 2024 | **Tests:** 869 | **Quality:** Grade A (92/100), 14% debt ratio, 100% unsafe docs, 69% protocol complete (546/789 SP)