Initial marketplace: n8n-skills + doc-converter plugins

Marketplace with 2 plugins:
- n8n-skills v1.0.0 (7 skills for n8n workflow automation)
- doc-converter v1.0.0 (DOCX/PDF to HTML via Gemini Vision)

doc-converter/README.md

@@ -0,0 +1,38 @@
+# Doc Converter Plugin for Claude Code
+
+Expert guidance for DOCX/PDF to HTML conversion using the doc-converter service with Gemini Vision API.
+
+## Skills Included
+
+| Skill | Invocation | Description |
+|-------|-----------|-------------|
+| **Doc Converter Expert** | `/doc-converter:doc-converter-expert` | Document conversion, layout templates (Vorlagen), troubleshooting |
+
+## Features
+
+- **Document type detection**: Standard (blue), Verfahrensanweisung/VA (pink), Other (1:1)
+- **Template rules**: Color schemes, section structures, table layouts
+- **Image processing**: Waifu2x upscaling, vector extraction, logo filtering
+- **Post-processing**: Font normalization, hierarchical indentation, table merging
+- **Jodit editor compatibility**: Inline styles, no CSS classes
+
+## Requirements
+
+- [Claude Code](https://claude.ai/code) CLI
+- doc-converter service (Flask + Gemini Vision)
+
+## Installation
+
+```bash
+# Via marketplace (if published)
+/plugin install doc-converter
+
+# Or from local path
+/plugin install /path/to/doc-converter
+```
+
+## Usage
+
+```
+/doc-converter:doc-converter-expert
+```