Bump version to v0.5.0 (#45)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: ezqy

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/).
 
-## [Unreleased]
+## [0.5.0] - 2026-03-12
 
 ### Added
 - **Gzip compression**: HTTP responses are now gzip-compressed via `tower-http` `CompressionLayer`, reducing bandwidth for API and metrics responses.

CLAUDE.md

@@ -147,7 +147,7 @@ docs/               — GitHub Pages user guide (Jekyll, Cayman theme)
 - **Timestamps**: UTC, format `%Y-%m-%dT%H:%M:%S%.3f` stored as TEXT.
 - **Config env vars**: `${VAR}` or `${VAR:-default}` syntax.
 - **Rust version**: 1.85+ (edition 2024). Use latest stable features (e.g., let chains).
-- **Version**: Currently v0.4.2. Update in Cargo.toml for releases.
+- **Version**: Currently v0.5.0. Update in Cargo.toml for releases.
 - **Docker image**: `ghcr.io/totte-dev/qhook`. Multi-stage build, ~119MB.
 
 ## Key Design Decisions

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "qhook"
-version = "0.4.2"
+version = "0.5.0"
 edition = "2024"
 rust-version = "1.85"
 description = "Lightweight webhook gateway and workflow engine with queue, retry, and signature verification."