feat: add notification sounds

src/lib/stores/notifications.ts

@@ -0,0 +1,22 @@
+import { derived } from "svelte/store";
+import { configStore } from "./config";
+import { soundPlayer } from "$lib/notifications";
+
+// Sync notification settings with config
+export const notificationSettings = derived(configStore.config, ($config) => {
+  soundPlayer.setEnabled($config.notifications_enabled);
+  soundPlayer.setGlobalVolume($config.notification_volume);
+
+  return {
+    enabled: $config.notifications_enabled,
+    volume: $config.notification_volume,
+  };
+});
+
+// Helper to update notification settings
+export async function updateNotificationSettings(enabled: boolean, volume: number) {
+  await configStore.updateConfig({
+    notifications_enabled: enabled,
+    notification_volume: volume,
+  });
+}