fix ai estimation

src/services/estimation_service_v2.py

@@ -1,5 +1,6 @@
 from datetime import date
 from enum import Enum
+import json
 from typing import Optional
 from src.cache.drug_cache import fetch_drug_with_dosage
 from src.models import PHQ, Applicant, Plan, EstimationResponse, EstimationDetails, EstimationResult
@@ -121,11 +122,11 @@ class EstimationService:
                 "/chat/",
                 json={"chat_session_id": session_id, "user_message": f"Check if this applicant eligible for insurance:\n {phq.model_dump_json()}"},
             )
-            response_json = response.json()
+            response_json = response.json()['message']
             print(f"AI DTQ Response: {response_json}")
-            
-            dtq = not response_json["message"]["insurable"]
-            reason = response_json["message"]["reason"]
+            ai_response = json.loads(response_json)
+            dtq = not ai_response["insurable"]
+            reason = ai_response["reason"]
             return dtq, reason
         except Exception as e:
             print(f"Error in AI DTQ check: {e}")