Make category optional in start voice onboarding API with automatic triage

ai-patient-onboarding/app/api/voice_onboarding.py

@@ -16,6 +16,7 @@ from app.database.models import (
     OnboardingState,
 )
 from app.schemas.onboarding import (
+    CategoryContext,
     CompleteOnboardingRequest,
     CompleteOnboardingResponse,
 )
@@ -52,15 +53,22 @@ async def start_voice_onboarding(
 
         session_id = f"VOICE-{uuid4().hex[:8].upper()}"
 
+        # Default category to General Medicine / Auto-Triage if omitted by client
+        category = request.category or CategoryContext(
+            type="general",
+            code="general_medicine",
+            name="General Medicine / Primary Care (Auto-Triage)",
+        )
+
         session = OnboardingSession(
             session_id=session_id,
             patient_id=request.patient.id,
             patient_name=request.patient.name,
             age=request.patient.age,
             gender=request.patient.gender,
-            category_type=request.category.type,
-            category_code=request.category.code,
-            category_name=request.category.name,
+            category_type=category.type,
+            category_code=category.code,
+            category_name=category.name,
             language=request.language,
             status="in_progress",
             stage="greeting",
@@ -99,7 +107,7 @@ async def start_voice_onboarding(
             success=True,
             session_id=session.session_id,
             patient_id=session.patient_id,
-            category=request.category,
+            category=category,
             language=session.language,
             status=session.status,
             stage=session.stage,