Try mwim

.emacs.d/lisp/init-crux.el

@@ -26,7 +26,6 @@
   ("C-^" . crux-top-join-line)
   ("C-<backspace>" . crux-kill-line-backwards)
   ([remap kill-whole-line] . crux-kill-whole-line)
-  ("C-a" . crux-move-beginning-of-line)
   ;; TODO don't need all of these
   ("C-<return>" . crux-smart-open-line)
   ("S-<return>" . crux-smart-open-line)

.emacs.d/lisp/init-editor.el

@@ -174,5 +174,10 @@
   :diminish
   :hook (prog-mode . ws-butler-mode))
 
+(use-package mwim
+  :bind
+  ("C-a" . mwim-beginning)
+  ("C-e" . mwim-end))
+
 (provide 'init-editor)
 ;;; init-editor.el ends here