Add system

app.py

@@ -87,7 +87,7 @@ def calculate_time_range(option: str, pledge_date: str = None):
     elif option == "since_pledge_date":
         if not pledge_date:
             raise ValueError("Pledge date is required for 'since_pledge_date' option")
-        start = datetime.strptime(pledge_date, "%Y-%m-%d")
+        start = pledge_date
     else:
         raise ValueError("Invalid time range option")
     print(start, one_week_ago, one_month_ago, pledge_date)