chore: prepare release v0.3.4 (#204)

Version bump to v0.3.4

## Changes

### Documentation

- Address 20 documentation gaps from claude-docs audit (#203)
- Added 5 new reference files covering advanced frontmatter, headless/CI
mode, GitHub Actions, memory/rules system, and advanced topics
  - Enhanced 6 skills with inline additions and updated trigger phrases
  - Improved coverage of plugin behavior in non-interactive contexts

## Checklist

- [x] Version updated in plugin.json, marketplace.json, CLAUDE.md
- [x] CHANGELOG.md updated with release notes
- [x] Markdownlint passes (87 files, 0 errors)
- [x] Plugin tested locally

**Full Changelog**:
v0.3.3...v0.3.4

Author: sjnims

.claude-plugin/marketplace.json

@@ -6,13 +6,13 @@
   },
   "metadata": {
     "description": "Unofficial plugin-dev plugin marketplace. Originally created by Daisy Hollman at Anthropic, now maintained by Steve Nims.",
-    "version": "0.3.3"
+    "version": "0.3.4"
   },
   "plugins": [
     {
       "name": "plugin-dev",
       "description": "Comprehensive toolkit for developing Claude Code plugins. Includes 10 expert skills covering hooks, MCP integration, LSP servers, commands, agents, marketplaces, and best practices, plus a guide skill for navigation. AI-assisted plugin creation and validation.",
-      "version": "0.3.3",
+      "version": "0.3.4",
       "author": {
         "name": "Steve Nims",
         "url": "https://github.com/sjnims"

CHANGELOG.md

@@ -7,6 +7,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.3.4] - 2026-01-30
+
+### Documentation
+
+- **Address 20 documentation gaps from claude-docs audit** - Comprehensive audit against official Claude Code documentation identified missing topics relevant to plugin developers. Added 5 new reference files covering:
+  - Advanced frontmatter fields (model, scoped hooks, visibility budget)
+  - Headless/CI mode compatibility
+  - GitHub Actions integration
+  - Memory & rules system interaction
+  - Advanced topics (keybindings, status line, caching, CLI commands, installation scopes)
+- **Enhanced skill coverage** - Updated 6 skills (skill-development, hook-development, agent-development, mcp-integration, plugin-structure, plugin-settings) with inline additions and trigger phrases for new content
+- **Added cross-cutting references** - New reference docs address plugin behavior in non-interactive contexts (headless mode, GitHub Actions, CI pipelines)
+
 ## [0.3.3] - 2026-01-27
 
 ### Added

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 10 skills, 3 agents, 4 slash commands.
 
-**Version**: v0.3.3 | [CHANGELOG.md](CHANGELOG.md)
+**Version**: v0.3.4 | [CHANGELOG.md](CHANGELOG.md)
 
 ## MCP Tool Requirements (CRITICAL)
 

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

@@ -1,6 +1,6 @@
 {
   "name": "plugin-dev",
-  "version": "0.3.3",
+  "version": "0.3.4",
   "description": "Comprehensive toolkit for developing Claude Code plugins. Includes 10 expert skills covering hooks, MCP integration, LSP servers, commands, agents, marketplaces, and best practices, plus a guide skill for navigation. AI-assisted plugin creation and validation.",
   "author": {
     "name": "Steve Nims",