chore: prepare release v0.3.1

Hotfix release addressing:
- [BANG] placeholder regression in skill-development (#192)
- Missing documentation updates for LSP skill

Version bump: 0.3.0 → 0.3.1

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: sjnims

.claude-plugin/marketplace.json

@@ -6,13 +6,13 @@
   },
   "metadata": {
     "description": "Unofficial plugin-dev plugin marketplace for plugin-dev Claude Code plugin - the plugin itself was initially created by Daisy Hollman at Anthropic.",
-    "version": "0.3.0"
+    "version": "0.3.1"
   },
   "plugins": [
     {
       "name": "plugin-dev",
       "description": "Comprehensive toolkit for developing Claude Code plugins. Includes 9 expert skills covering hooks, MCP integration, LSP servers, commands, agents, marketplaces, and best practices. AI-assisted plugin creation and validation.",
-      "version": "0.3.0",
+      "version": "0.3.1",
       "author": {
         "name": "Daisy Hollman",
         "url": "https://github.com/anthropics/claude-code/",

CHANGELOG.md

@@ -7,6 +7,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.3.1] - 2026-01-24
+
+### Fixed
+
+- **Replace `!` with `[BANG]` in skill-development** - Fixed regression from #192 where dynamic context injection examples used literal `!` backtick patterns, causing shell execution errors during skill loading
+
+### Documentation
+
+- **Update skill counts for LSP integration** - Updated CONTRIBUTING.md and README.md to reflect 9 skills (was 8)
+- **Add LSP Integration to README skills table** - Added missing entry for LSP skill triggers
+- **Add 0.3.x to SECURITY.md** - Added current version to supported versions table
+
 ## [0.3.0] - 2026-01-24
 
 ### Changed
@@ -207,7 +219,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Based on original plugin by Daisy Hollman at Anthropic
 - Expanded with enhanced skills, additional utilities, and CI/CD infrastructure
 
-[Unreleased]: https://github.com/sjnims/plugin-dev/compare/v0.3.0...HEAD
+[Unreleased]: https://github.com/sjnims/plugin-dev/compare/v0.3.1...HEAD
+[0.3.1]: https://github.com/sjnims/plugin-dev/compare/v0.3.0...v0.3.1
 [0.3.0]: https://github.com/sjnims/plugin-dev/compare/v0.2.1...v0.3.0
 [0.2.1]: https://github.com/sjnims/plugin-dev/compare/v0.2.0...v0.2.1
 [0.2.0]: https://github.com/sjnims/plugin-dev/compare/v0.1.0...v0.2.0

CLAUDE.md

@@ -6,7 +6,7 @@ Guidance for Claude Code working in this repository.
 
 Plugin marketplace containing the **plugin-dev** plugin - a toolkit for developing Claude Code plugins. Provides 9 skills, 3 agents, 3 slash commands.
 
-**Version**: v0.3.0 | [CHANGELOG.md](CHANGELOG.md)
+**Version**: v0.3.1 | [CHANGELOG.md](CHANGELOG.md)
 
 ## MCP Tool Requirements (CRITICAL)
 

plugins/plugin-dev/.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "plugin-dev",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "Comprehensive toolkit for developing Claude Code plugins. Includes 9 expert skills covering hooks, MCP integration, LSP servers, commands, agents, marketplaces, and best practices. AI-assisted plugin creation and validation.",
   "author": {
     "name": "Daisy Hollman",