REFACTOR external service and improve websocket training

services/forecasting/app/api/scenario_operations.py

@@ -6,7 +6,7 @@ Business operations for "what-if" scenario testing and strategic planning
 import structlog
 from fastapi import APIRouter, Depends, HTTPException, status, Path, Request
 from typing import List, Dict, Any
-from datetime import date, datetime, timedelta
+from datetime import date, datetime, timedelta, timezone
 import uuid
 
 from app.schemas.forecasts import (
@@ -65,7 +65,7 @@ async def simulate_scenario(
     **PROFESSIONAL/ENTERPRISE ONLY**
     """
     metrics = get_metrics_collector(request_obj)
-    start_time = datetime.utcnow()
+    start_time = datetime.now(timezone.utc)
 
     try:
         logger.info("Starting scenario simulation",
@@ -131,7 +131,7 @@ async def simulate_scenario(
         )
 
         # Calculate processing time
-        processing_time_ms = int((datetime.utcnow() - start_time).total_seconds() * 1000)
+        processing_time_ms = int((datetime.now(timezone.utc) - start_time).total_seconds() * 1000)
 
         if metrics:
             metrics.increment_counter("scenario_simulations_success_total")
@@ -160,7 +160,7 @@ async def simulate_scenario(
             insights=insights,
             recommendations=recommendations,
             risk_level=risk_level,
-            created_at=datetime.utcnow(),
+            created_at=datetime.now(timezone.utc),
             processing_time_ms=processing_time_ms
         )