feat(gui): Implement cb_load_prior_log wrapper in App class

src/gui_2.py

@@ -4021,6 +4021,14 @@ def hello():
        changed = True
    self._push_mma_state_update()
 
+ def cb_load_prior_log(self, path: Optional[str] = None) -> None:
+  if path is None:
+   root = hide_tk_root()
+   path = filedialog.askdirectory(title='Select Session Directory', initialdir=str(paths.get_logs_dir()))
+   root.destroy()
+  if path:
+   self.controller.cb_load_prior_log(path)
+
  def _reorder_ticket(self, src_idx: int, dst_idx: int) -> None:
   """
   [C: tests/test_ticket_queue.py:TestReorder.test_reorder_ticket_invalid, tests/test_ticket_queue.py:TestReorder.test_reorder_ticket_valid]