style(config): Reformat Emacs Lisp code for consistency

Standardize formatting across multiple init files: expand
single-line use-package keywords onto separate lines, fix
indentation, remove outdated comments, and clean up whitespace. Also
adds mc/keymap <return> binding and improves fcitx5 startup logic in
EXWM.

lisp/init-gptel.el

@@ -5,7 +5,9 @@
 ;;; Code:
 
 (use-package gptel
-  :hook (gptel-mode-hook . visual-line-mode)
+  :hook
+  (gptel-mode-hook . visual-line-mode)
+  
   :config
   (setq gptel-log-level t)
   (setq gptel-default-mode 'org-mode)
@@ -129,6 +131,7 @@ from the last 1500 characters of the buffer."
 (use-package gptel-magit
   :hook
   (magit-mode . gptel-magit-install)
+  
   :init
   (with-eval-after-load 'gptel
     (gptel-make-openai "Kimi-Code-magit"