{"success":true,"message":"Welcome to Birim Doktor API","data":{"app":"Birim Doktor - Medical RAG System","version":"1.0.0","status":"running","endpoints":{"GET /":"Web interface","GET /api":"This API info","GET /health":"Health check","GET /health/ai":"AI providers health","POST /ask":"Ask a question","POST /upload/pdf":"Upload PDF document","POST /notes":"Create note","GET /notes":"List notes","GET /sources":"List sources","GET /chunks":"List chunks"},"ui":"/ui.html","docs":{"README":"/README.md","OpenAI Setup":"/docs/OPENAI_SETUP.md","API Hardening":"/docs/API_HARDENING.md"}}}