Revert WhatsApp theme bridge

The native messaging host, extension shim, and lifecycle machinery are too complicated for the value this integration provides.

migrations/1785593125.sh

@@ -1,24 +0,0 @@
-echo "Add the WhatsApp Omarchy Theme extension and register its native messaging host"
-
-WHATSAPP_THEME_EXT="$OMARCHY_PATH/default/chromium/extensions/whatsapp-theme"
-
-add_whatsapp_theme_extension() {
-  local file=$1
-
-  [[ -f $file ]] || return 0
-  grep -q "extensions/whatsapp-theme" "$file" && return 0
-
-  if grep -q "^--load-extension=" "$file"; then
-    sed -i --follow-symlinks "s|^--load-extension=\(.*\)$|--load-extension=\1,$WHATSAPP_THEME_EXT|" "$file"
-  else
-    echo "--load-extension=$WHATSAPP_THEME_EXT" >>"$file"
-  fi
-}
-
-for conf in chromium chrome google-chrome brave brave-beta brave-nightly brave-origin-beta microsoft-edge-stable; do
-  add_whatsapp_theme_extension "$HOME/.config/$conf-flags.conf"
-done
-
-# The extension follows the theme over native messaging (com.omarchy.theme), so
-# register its host manifest in every Chromium profile root.
-omarchy-install-chromium-theme