emacs/mail: Fix Gnus loading

hosts/hermes/doom/config.org

@@ -757,14 +757,14 @@ mu4e + mbsync + msmtp:
   (set-variable 'read-mail-command #'mu4e))
 
 (use-package! mu4e
+  :autoload (mu4e mu4e-user-agent)
   :commands (mu4e)
-  :init
+  :preface
   (defun e3/contact-processor (contact)
     (cond
      ;; remove unwanted contacts
      ((string-match-p "noreply" contact) nil)
      (t contact)))
-
   :config
   ;; Each path is relative to `+mu4e-mu4e-mail-path', which is ~/.mail by default
   (set-email-account! "Gmail"
@@ -842,7 +842,6 @@ mu4e + mbsync + msmtp:
 
 #+begin_src emacs-lisp :lexical t
 (use-package! gnus
-  :after (mu4e)
   :init
   (require 'ol-gnus)
   (setq! bhankas-gnus-dir (concat global-org-directory "gnus/"))