feat: Add Shannon MCP Server for Claude Desktop Integration

[milog1994]

Summary

This PR introduces a dedicated Shannon Desktop MCP Server to enable deep integration between Claude Desktop and the Shannon pentest infrastructure.

The new desktop-mcp-server package runs on the host machine and acts as a bridge, allowing Claude Desktop to:

1. Control Dockerized Workflows: Start, stop, and monitor Temporal workflows via a direct gRPC connection to localhost:7233.
2. Access Local Files: Read config files and audit logs directly from the host filesystem for low latency.
3. Visualize Architecture: Includes an interactive playground (shannon-architecture-playground.html) to understand the data flow.

Key Features

• New Package: desktop-mcp-server/ with its own package.json and tsconfig.json to keep dependencies clean.
• MCP Tools:
  • start_scan: Launch scans with validation for URLs, repos, and configs.
  • query_progress: Real-time status checks of Temporal workflows.
  • get_report: Retrieve final markdown reports.
  • validate_config: Verify YAML configs against the schema.
• Resources: Exposes audit-logs/, configs/, and deliverables/ as read-only resources.
• Visualization: Added shannon-architecture-playground.html for architectural documentation.

Test Plan

1. Run npm run build:mcp to verify compilation.
2. Configure Claude Desktop with the new server:

   "shannon": {
     "command": "node",
     "args": ["/path/to/shannon/desktop-mcp-server/dist/index.js"],
     "env": { "SHANNON_ROOT": "..." }
   }

3. Verify tools appear in Claude Desktop.
4. Run a start_scan and check query_progress to confirm end-to-end connectivity with Docker.

🤖 Generated with Claude Code