feat: add mcp-searxng server

[rcdailey]

Summary

Add packaging for mcp-searxng MCP server to Dockyard.

MCP server for SearXNG search engine integration. Enables AI assistants to perform web searches using a self-hosted SearXNG instance.

• Package: https://www.npmjs.com/package/mcp-searxng
• Repository: https://github.com/ihor-sokoliuk/mcp-searxng
• Version: 0.8.0

Split from #362 per maintainer request.

Note: Security scan may require environment variable configuration per maintainer's comment on #362.

[JAORMX]

It seems the security scanner is failing to run to analyse this MCP server. The reason is that the MCP needs an environment variable to work.

❌ ⚠️ Configuration Issues: SEARXNG_URL not set. Set SEARXNG_URL (e.g., http://localhost:8080 or https://search.example.com)/
Error during scanning: Unable to connect to stdio MCP server with command npx. Please verify the command is correct and executable. Original error: Connection closed

❌ Error: No JSON output found for mcp-searxng
Error: Process completed with exit code 1.

The fix would be to add the following to the spec:

# Security configuration
security:
  # Mock env vars allow security scanning without real credentials
  mock_env:
    - name: SEARXNG_URL
      value: "http://example.com"
      description: "searxng url - mock value for security scanning"

Here's a sample: https://github.com/stacklok/dockyard/pull/372/changes

[rcdailey]

Done. Thank you!

[github-actions]

🔒 MCP Security Scan Results

✅ mcp-searxng

• Status: Passed
• Tools scanned: 2
• Result: No security issues detected

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Summary: Scanned 1 MCP server(s), all passed security checks. ✅

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