Fix attr names

Author: tristanlabelle

app/backend/src/couchers/jobs/handlers.py

@@ -236,7 +236,7 @@ def send_message_notifications(payload: empty_pb2.Empty) -> None:
 
             unseen_messages = session.execute(
                 where_moderated_content_visible(
-                    select(GroupChat, Message, subquery.c.count_unseen)
+                    select(GroupChat, Message, subquery.c.unseen_count)
                     .join(subquery, subquery.c.message_id == Message.id)
                     .join(GroupChat, GroupChat.conversation_id == subquery.c.group_chat_id),
                     context,

app/backend/src/couchers/notifications/render_email.py

@@ -144,10 +144,10 @@ def _get_generic_templated_email(user_name: str, notification: Notification) ->
             missed_entries = []
             for message in data.messages:
                 group_chat_title = message.group_chat_title
-                missed_count: int = message.unread_count
+                missed_count: int = message.unseen_count
 
                 # Backcompat (2026-05): The group name and unseen count were previously was formatted in the message string
-                # msg = f"You missed {count_unseen} message(s) in {group_chat.title}"
+                # msg = f"You missed {unseen_count} message(s) in {group_chat.title}"
                 if not group_chat_title or not missed_count:
                     if match := re.search(" message(s) in (.+)$", data.message or ""):
                         group_chat_title = match[1]