feat: add Arch update helper and web UI

internal/notify/notify.go

@@ -0,0 +1,18 @@
+package notify
+
+import (
+	"errors"
+	"os/exec"
+)
+
+func Send(title, body string) error {
+	if _, err := exec.LookPath("notify-send"); err == nil {
+		return exec.Command("notify-send", "-a", "LazyUpdateManager", title, body).Run()
+	}
+
+	if _, err := exec.LookPath("hyprctl"); err == nil {
+		return exec.Command("hyprctl", "notify", "1", "8000", "rgb(73daca)", title+": "+body).Run()
+	}
+
+	return errors.New("neither notify-send nor hyprctl is available")
+}