sort by due date, items with due dates come first

main.js

@@ -270,6 +270,14 @@ class OrgTodoListView extends ItemView {
             return true;
         });
 
+        // sort by due date - items with due dates first!
+        this.filtered.sort((a, b) => {
+            if (a.dueDate && b.dueDate) return a.dueDate.localeCompare(b.dueDate);
+            if (a.dueDate) return -1;   // a has a date, b doesn't → a first
+            if (b.dueDate) return 1;    // b has a date, a doesn't → b first
+            return 0;                   // neither has a date → keep as-is
+        });
+
         this.listEl.empty();
 
         if (this.filtered.length === 0) {