GUI updates and misc fixes for the Cancel cutoff

app/schedule.py

@@ -36,3 +36,16 @@ def is_past_cutoff(created_at: Optional[dt.datetime], cutoff: Optional[dt.time])
     if not created_at or not cutoff:
         return False
     return created_at.time() > cutoff
+
+
+def is_past_cutoff_today(created_at: Optional[dt.datetime], cutoff: Optional[dt.time]) -> bool:
+    """
+    Same as is_past_cutoff, but only true for TODAY's late arrivals - the
+    flag is meant to mean "this one came in too late for today's window",
+    not a permanent marker. Once the next business day starts, a ticket
+    that arrived late yesterday is carryover (a different, already-tracked
+    concept), not "past cutoff" anymore.
+    """
+    if not created_at or created_at.date() != dt.date.today():
+        return False
+    return is_past_cutoff(created_at, cutoff)