Move from permission setup to .bak process

Means less interaction for folks just riding on the default train
without overwriting the work of people who've made changes.

bin/omarchy-refresh-walker

@@ -1,5 +1,10 @@
 #!/bin/bash
 
-if [[ "$1" == "-y" ]] || gum confirm "Refresh Walker config? This will replace your current settings with Omarchy defaults."; then
-  cp -f ~/.local/share/omarchy/config/walker/config.toml ~/.config/walker/ 2>/dev/null
+cp -f ~/.config/walker/config.toml ~/.config/walker/config.toml.bak 2>/dev/null
+cp -f ~/.local/share/omarchy/config/walker/config.toml ~/.config/walker/ 2>/dev/null
+
+if cmp -s ~/.config/walker/config.toml.bak ~/.config/walker/config.toml; then
+  rm ~/.config/walker/config.toml.bak
+else
+  echo -e "\e[31mExisting .config/walker/config.toml replaced with new Omarchy default, but a .bak file was made.\e[0m"
 fi