basically refactored the email viewer

maildir_gtd/utils.py

@@ -1,4 +1,4 @@
-from datetime import datetime, timedelta
+from datetime import UTC, datetime, timedelta
 import re
 from typing import List, Dict
 
@@ -6,7 +6,7 @@ from typing import List, Dict
 def group_envelopes_by_date(envelopes: List[Dict]) -> List[Dict]:
     """Group envelopes by date and add headers for each group."""
     grouped_envelopes = []
-    today = datetime.now()
+    today = datetime.now().astimezone(UTC)
     yesterday = today - timedelta(days=1)
     start_of_week = today - timedelta(days=today.weekday())
     start_of_last_week = start_of_week - timedelta(weeks=1)
@@ -32,7 +32,7 @@ def group_envelopes_by_date(envelopes: List[Dict]) -> List[Dict]:
     current_group = None
     for envelope in envelopes:
         envelope_date = re.sub(r"[\+\-]\d\d:\d\d", "", envelope["date"])
-        envelope_date = datetime.strptime(envelope_date, "%Y-%m-%d %H:%M")
+        envelope_date = datetime.strptime(envelope_date, "%Y-%m-%d %H:%M").astimezone(UTC)
         group_label = get_group_label(envelope_date)
         if group_label != current_group:
             grouped_envelopes.append({"type": "header", "label": group_label})