theme cycle trigger waybar theme

waybar/switch-theme.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+# ~/.config/waybar/switch-theme.sh
+
+THEME_DIR="$HOME/.config/waybar/themes"
+STYLE="$HOME/.config/waybar/style.css"
+THEME="$1"  # e.g. dark, light, catppuccin
+
+if [ -z "$THEME" ]; then
+  echo "Usage: switch-theme.sh <theme-name>"
+  exit 1
+fi
+
+if [ ! -f "$THEME_DIR/$THEME.css" ]; then
+  echo "Theme '$THEME' not found in $THEME_DIR"
+  exit 1
+fi
+
+ln -sf "$THEME_DIR/$THEME.css" "$STYLE"
+pkill -SIGUSR2 waybar
+echo "Switched to $THEME"