Migrate from stow to dm theme manager

Move all config files from .config/ into themes/dracula/.config/ so the
dm tool can manage them as file-level symlinks. Removes .bak file.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

themes/dracula/.config/gtk-3.0/bookmarks

@@ -0,0 +1,2 @@
+file:///mnt/games games
+file:///mnt/data data

themes/dracula/.config/gtk-3.0/settings.ini

@@ -0,0 +1,17 @@
+[Settings]
+gtk-theme-name=Dracula
+gtk-icon-theme-name=Dracula
+gtk-font-name=Inter Variable 11
+gtk-cursor-theme-name=Dracula
+gtk-cursor-theme-size=24
+gtk-toolbar-style=GTK_TOOLBAR_ICONS
+gtk-toolbar-icon-size=GTK_ICON_SIZE_LARGE_TOOLBAR
+gtk-button-images=0
+gtk-menu-images=0
+gtk-enable-event-sounds=1
+gtk-enable-input-feedback-sounds=0
+gtk-xft-antialias=1
+gtk-xft-hinting=1
+gtk-xft-hintstyle=hintslight
+gtk-xft-rgba=rgb
+gtk-application-prefer-dark-theme=1