Add MCP docs server for documentation search

[shanerbaner82]

Summary

• Adds an MCP (Model Context Protocol) server at /mcp/* for AI assistants to search and query NativePHP documentation
• Includes both SSE endpoints for MCP clients and REST API endpoints for simpler integrations

Endpoints

Endpoint	Method	Purpose
/mcp/sse	GET	SSE stream for MCP clients
/mcp/message	POST	JSON-RPC tool calls
/mcp/health	GET	Health check
/mcp/api/search?q=	GET	REST search API
/mcp/api/page/{platform}/{version}/{section}/{slug}	GET	Get page content
/mcp/api/apis/{platform}/{version}	GET	List APIs
/mcp/api/navigation/{platform}/{version}	GET	Get nav structure

MCP Tools

• search_docs - Full-text search with platform/version filters
• get_page - Get full page content by path
• list_apis - List all APIs for a platform/version
• get_navigation - Get docs structure

Test plan

• curl https://nativephp.com/mcp/health returns status ok
• curl "https://nativephp.com/mcp/api/search?q=camera" returns results
• MCP tool calls work via POST to /mcp/message