feat: add claude-code-setup and claude-md-management plugins

plugins/claude-code-setup/skills/claude-automation-recommender/references/plugins-reference.md

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+# Plugin Recommendations
+
+Plugins are installable collections of skills that extend Claude's capabilities. They bundle related skills, reference materials, and workflows together.
+
+## Available Plugins
+
+### anthropic-agent-skills
+**The comprehensive skills bundle from Anthropic**
+
+| Recommend When | Examples |
+|----------------|----------|
+| General productivity | Default recommendation |
+| Document workflows | docx, xlsx, pptx, pdf |
+| Frontend development | frontend-design, webapp-testing |
+| Building AI tools | mcp-builder, skill-creator |
+| Creative work | canvas-design, algorithmic-art |
+
+**Includes**: docx, xlsx, pptx, pdf, frontend-design, canvas-design, algorithmic-art, mcp-builder, skill-creator, webapp-testing, doc-coauthoring, internal-comms, brand-guidelines, theme-factory, slack-gif-creator, web-artifacts-builder
+
+**Install**: This plugin is commonly pre-installed. Check with `claude plugins list`.
+
+---
+
+### frontend-design
+**Specialized frontend UI development**
+
+| Recommend When | Examples |
+|----------------|----------|
+| React/Vue/Angular work | Component development |
+| Landing pages | Marketing sites |
+| Dashboard UI | Admin interfaces |
+| Design system | Component libraries |
+
+**Value**: Creates distinctive, production-grade UI avoiding generic AI aesthetics.
+
+---
+
+## Plugin vs Individual Skills
+
+### When to Recommend Plugin Installation
+- User needs multiple related skills
+- Team standardization desired
+- First-time Claude Code setup
+- Comprehensive capability needed
+
+### When to Recommend Individual Skill Usage
+- Specific one-time task
+- Already have plugin installed
+- Just need one capability
+
+---
+
+## Checking Installed Plugins
+
+```bash
+# List installed plugins
+claude plugins list
+
+# Check available skills
+claude skills list
+```
+
+---
+
+## Custom Plugin Development
+
+For teams wanting to bundle their own skills:
+
+| Recommend When | Examples |
+|----------------|----------|
+| Company-specific workflows | Internal processes |
+| Team best practices | Shared patterns |
+| Domain expertise | Industry knowledge |
+| Tool integrations | Internal tools |
+
+Use the **skill-creator** skill to build individual skills, then bundle them into a plugin for team distribution.
+
+---
+
+## Quick Reference
+
+| Need | Recommended Plugin/Skill |
+|------|-------------------------|
+| General productivity | anthropic-agent-skills (full bundle) |
+| Document creation | docx, xlsx, pptx, pdf skills |
+| Frontend work | frontend-design plugin |
+| Testing | webapp-testing skill |
+| Building tools | mcp-builder skill |
+| Custom workflows | skill-creator skill |