[Discovery] n8n - Workflow Automation

## Project Association

This issue tracks the `n8n` workflow automation in the core profile.

### Server Details
- **Name**: n8n
- **Source**: https://github.com/n8n-io/n8n
- **Docker Hub**: `n8nio/n8n:latest`
- **Category**: workflow
- **Language**: TypeScript/Node.js

### Transport Status
- **Current**: Native HTTP/webhook support
- **Implementation**: Built-in web interface
- **Docker Image**: `n8nio/n8n:latest`

### Features
- Visual workflow builder
- 400+ integrations
- Webhook support for MCP integration
- PostgreSQL backend

### Dependencies
- PostgreSQL database
- Import service for credentials/workflows

### Docker Status
- Official image: `n8nio/n8n:latest`
- No custom build needed
- Complex multi-service setup

### Notes
- Not a traditional MCP server, but workflow automation platform
- Can be used to orchestrate MCP tool calls
- Requires database and import services

### Tracking
- [ ] Document MCP integration patterns
- [ ] Create example workflows for MCP
- [ ] Document webhook configuration

Start with the linked n8n source and the listed n8nio/n8n:latest image, then review the repository's core profile conventions. Document MCP integration patterns, webhook configuration, and example workflows, including the PostgreSQL and import-service requirements; done means all three tracking items are addressed.

Written by the indexing model from the issue text.