updates to tiling

home/tiling/niri/config/scripts/brightness.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+WAYBAR_SIGNAL=8   # SIGRTMIN+8
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <integer -100..100>" >&2
+    exit 1
+fi
+
+value="$1"
+
+# Validate integer range
+if ! [[ "$value" =~ ^-?[0-9]+$ ]] || [ "$value" -lt -100 ] || [ "$value" -gt 100 ]; then
+    echo "Error: argument must be an integer between -100 and 100" >&2
+    exit 1
+fi
+
+# Apply brightness change with correct syntax
+if [ "$value" -gt 0 ]; then
+    brightnessctl s "+${value}%" >/dev/null
+elif [ "$value" -lt 0 ]; then
+    brightnessctl s "${value#-}%-" >/dev/null
+else
+    : # no-op for 0
+fi
+
+# Notify Waybar to refresh
+pkill -RTMIN+"$WAYBAR_SIGNAL" waybar
+