refactor: remove dead code and defunct settings

- streamlink: remove twitch-disable-hosting (removed 2022) and
  twitch-disable-ads (dropped by streamlink)
- .zprofile: remove dead FZF_TMUX tmux check, GTK2_RC_FILES export
  (gtk-2.0 dir deleted), update qt5ct → qt6ct
- gtk-3.0/settings.ini: remove 4 GTK2-only settings (toolbar-style,
  toolbar-icon-size, button-images, menu-images)
- gtk-3.0/gtk.css: fix GTK2 selectors (GtkLabel→headerbar, GtkWindow→window),
  remove Nautilus rule (not used on sway)
- npm/npmrc: remove init-module pointing to nonexistent file
- mpv.conf: remove load-stats-overlay=no (references nonexistent script)
- aerc.conf: change styleset nord → gruvbox for consistency

1 files changed, 2 insertions, 7 deletions

diff --git a/home/.config/gtk-3.0/gtk.css b/home/.config/gtk-3.0/gtk.css
index 300f8fc..d506506 100644
--- a/home/.config/gtk-3.0/gtk.css
+++ b/home/.config/gtk-3.0/gtk.css
@@ -18,11 +18,11 @@
   background-color: #ededed;
   box-shadow: none;
 }
-GtkLabel.title {
+headerbar .title {
     opacity: 0;
 }
 /* Always use background color */
-GtkWindow {
+window {
     background-color: @theme_bg_color;
 }
 
@@ -34,8 +34,3 @@ GtkWindow {
 .tooltip * {
     background-color: transparent;
 }
-
-/* Fix Nautilus desktop window background override */
-NautilusWindow {
-     background-color: transparent;
-}