Add omarchy-shell with a plugin registry

bin/omarchy-voxtype-install

@@ -22,7 +22,7 @@ if gum confirm "Install Voxtype + AI model (~150MB) to enable dictation?"; then
 
   omarchy-restart-waybar
   OMARCHY_PATH=${OMARCHY_PATH:-$HOME/.local/share/omarchy}
-  if quickshell list -p "$OMARCHY_PATH/default/quickshell/bar" 2>/dev/null | grep -q '^Instance '; then
+  if quickshell list -p "$OMARCHY_PATH/default/quickshell/omarchy-shell" 2>/dev/null | grep -q '^Instance '; then
     omarchy-restart-bar
   fi
   notify-send "    Voxtype Dictation Ready" "Hold F9 to dictate (or toggle with Super + Ctrl + X)." -t 10000