{"message":"Luminogics AI Assistant API","version":"3.0.0","database":"MongoDB","endpoints":{"/session/create":"POST - Create a new session","/chat":"POST - Send a message and get AI response","/chat/expertise":"POST - Chat about expertise","/chat/services":"POST - Chat about services","/session/{session_id}/history":"GET - Get conversation history","/session/{session_id}/stats":"GET - Get session statistics","/session/{session_id}/clear":"DELETE - Soft delete a session","/session/{session_id}/delete":"DELETE - Permanently delete a session","/health":"GET - Health check","/docs":"GET - API documentation"}}