chore: prepare release v0.4.0

Author: github-actions[bot]

.claude-plugin/plugin.json

@@ -1,12 +1,18 @@
 {
   "name": "itkdev-tools",
   "description": "ITK Dev tools and MCP servers for Claude Code",
-  "version": "0.3.3",
+  "version": "0.4.0",
   "author": {
     "name": "ITK Dev",
     "email": "itkdev@mkb.aarhus.dk"
   },
   "repository": "https://github.com/itk-dev/itkdev-claude-plugins",
   "license": "MIT",
-  "keywords": ["itk-dev", "drupal", "github", "docker", "documentation"]
+  "keywords": [
+    "itk-dev",
+    "drupal",
+    "github",
+    "docker",
+    "documentation"
+  ]
 }

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.0] - 2026-02-20
+
 ### Added
 
 - `itkdev-issue-workflow` agent for autonomous GitHub issue workflows (`agents/itkdev-issue-workflow.md`)
@@ -85,6 +87,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Plugin marketplace structure
 
 [Unreleased]: https://github.com/itk-dev/itkdev-claude-plugins/compare/v0.3.1...HEAD
+[0.4.0]: https://github.com/itk-dev/itkdev-claude-plugins/compare/v0.3.3...v0.4.0
 [0.3.3]: https://github.com/itk-dev/itkdev-claude-plugins/compare/v0.3.2...v0.3.3
 [0.3.1]: https://github.com/itk-dev/itkdev-claude-plugins/compare/v0.3.0...v0.3.1
 [0.3.0]: https://github.com/itk-dev/itkdev-claude-plugins/compare/v0.2.0...v0.3.0