Modify sparkline so it ranges from earliest workout date to current date

app.py

@@ -674,7 +674,7 @@ def generate_daily_duration_sparkline(workouts):
 
     # Determine date range based on workouts data
     start_date = workouts[-1]['start_time_date']
-    end_date = workouts[0]['start_time_date']
+    end_date = datetime.now().date()  # workouts[0]['start_time_date']
 
     # Build a mapping of dates to their respective durations for easier lookup
     workouts_by_date = {w['start_time_date']: int(