feat: add P3X Network MCP server for AI-powered network analysis}
- Implement MCP server with stdio transport wrapping network.corifeus.com API - Register 15 diagnostic tools: network_audit, dns_lookup, ssl_check, whois, security_headers, mx_check, email_deliverability, dnsbl, bgp, reverse_dns, http_check, dns_propagation, ipv6_check, geolocation, and my_ip - Add configurable base URL via P3X_NETWORK_URL environment variable - Add MCP client integration tests using node:test for tool listing and live tool invocations (dns_lookup, ssl_check, my_ip, whois) - Add package.json with bin entry for npx/global install usage - Add Gruntfile.cjs for corifeus-builder build pipeline - Add README with installation instructions for Claude Code, Codex, and generic MCP clients