Store customized tab order on `desktop` sessions

[cortsf]

Hello all, and thanks for making centaur-tabs. I'd like to know if there is any supported or simple way of storing customized (check bottom note) tab orders in desktop sessions. Many years ago I came with a hacky solution which is probably wrong on many levels (I didn't had too much time to fully understand all the centaur-tabs source code, nor to become an elisp expert) but it did work 100% of the times for many years, until emacs 30.

 (add-hook 'desktop-save-hook 'centaur-fran-save-tabsets)

(defun desktop-load-fran () (interactive)
       (let* ((_load (call-interactively 'desktop+-load)))
	 (run-at-time "0.1 sec" nil 'centaur-fran-load-tabsets)
	 )
       )
       
(defun centaur-fran-save-tabsets () (interactive)
       (setq centaur-tabs-serialized-tabsets '())
       (mapcar (lambda (tabset-name)
		 (let* (
			(bufset (centaur-tabs-get-tabset tabset-name))
			(tabset (centaur-tabs-tabs bufset))
			(group-name (format "%s" bufset))
			(buffer-list (mapcar 'buffer-name (mapcar 'car tabset)))
			)
		   (push (cons group-name buffer-list) centaur-tabs-serialized-tabsets)
		   )
		 )
	       (seq-filter (lambda (x) (if (or (eq x "Emacs") (eq x 0)) nil t)) centaur-tabs-tabsets) ;; "Emacs" causes empty tablines sometines. Do not remove without heavy testing. 
	       )
       )


(defun centaur-fran-load-tabsets () (interactive)
       (mapcar (lambda (serialized-tabset)
		 (let* (
			(bufset (centaur-tabs-get-tabset (car serialized-tabset)))
			(current-group-tabs (centaur-tabs-tabs bufset))
			(stringtail (cdr serialized-tabset))
			(new-group-tabs '())
			)
		   (mapcar (lambda (x) 
			     (if (get-buffer x)
				 (push (car (seq-filter (lambda (y) (if (string= x (buffer-name (car y))) t nil)) current-group-tabs) ) new-group-tabs)
			     )
			     ) 
			   stringtail) 
		   (set bufset (reverse new-group-tabs))
		   (centaur-tabs-set-template bufset nil)
		   (centaur-tabs-display-update)
		   )
		 )
	       centaur-tabs-serialized-tabsets
	       )
       )

Now everything (saving/loading sessions) fails with this error:

Wrong type argument: stringp, #<obarray n=3>

To be honest I don't remember exactly what the heck this code is doing and don't know why it fails 😄 so I'm looking for any other not so hacky solution if possible. Otherwise I hope this ugly hack inspires anybody looking for such functionality (share it!).

Note: Storing the tab order is useful when altering the default order with (centaur-tabs-move-current-tab-to-left) and (centaur-tabs-move-current-tab-to-right) (I always do it).