Config: Strip down and simplify Emacs config

- Remove consult-dir, nerd-icons-completion, org-contrib and some other unused package
- Delete init-org-refile.el and related keybindings
- Prune EMMS config
- Remove EXWM flatpak launcher helpers (vscodium, localsend, steam)
- Extract Windows dirvish video preview fix to standalone module
- Drop built-in settings moved elsewhere (startup defaults, whitespace, etc.)
- Clean up trailing whitespace / process list prettify configs

lisp/init-prog.el

@@ -27,6 +27,8 @@
   (with-eval-after-load 'geiser
     (setq geiser-default-implementation 'guile)))
 
+(use-package geiser-guile)
+
 ;; markdown
 (use-package markdown-mode
   :mode ("README\\.md\\'" . gfm-mode)
@@ -34,7 +36,6 @@
   :bind (:map markdown-mode-map
               ("C-c C-e" . markdown-do)))
 
-(use-package geiser-guile)
 
 (provide 'init-prog)