fix: ordenar turnos del usuario del más cercano al más lejano en el dashboard

src/Models/Assignment.php

@@ -139,7 +139,7 @@ class Assignment extends BaseModel
                 FROM assignments a 
                 INNER JOIN users u ON a.user_id = u.id 
                 WHERE a.user_id = ? 
-                ORDER BY a.start_date DESC";
+                ORDER BY a.start_date ASC";
         
         $stmt = $this->db->prepare($sql);
         $stmt->execute([$userId]);