New Database

backend/time_util.py

@@ -15,7 +15,6 @@ The timezone is cached per-request via Flask app config to avoid DB lookups.
 import time as _time
 import threading
 from datetime import datetime, timedelta, timezone, date
-from typing import Union
 
 import pytz
 
@@ -130,14 +129,14 @@ def set_tz(tz_str: str) -> bool:
             # Convert to an IANA-like name: pytz has FixedOffset but easiest is
             # just use a fixed-offset timezone
             import pytz
-            tz = pytz.FixedOffset(sign * hours * 60)  # FixedOffset expects minutes
+            pytz.FixedOffset(sign * hours * 60)  # FixedOffset expects minutes
         except (ValueError, IndexError):
             return False
     else:
         # IANA name — validate by trying to load
         try:
             import pytz
-            tz = pytz.timezone(normalized)
+            pytz.timezone(normalized)
         except Exception:
             return False