{"message":"EdSofta SmartLearn AI Backend - Enhanced with RAG","version":"0.6.0","features":["quiz","qa","lesson"],"enhancements":["RAG context retrieval from educational graph database","Curriculum-grounded AI responses","Vector similarity search for relevant content","Relationship-aware educational context","Consistent JSON response format (requestId, feature, answer, metadata)","Usage token tracking in metadata","Comprehensive request/response logging (Story 7)","Prometheus metrics for monitoring","Structured JSON logs for observability"],"validation":"Advanced parameter validation enabled","documentation":"/docs","health":"/health","metrics":"/metrics","test_rag":"/test-rag","main_endpoint":"/api/ai/query"}