feat: add notification sounds (#44)

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Reviewed-on: #44
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

src/lib/stores/config.ts

@@ -12,6 +12,8 @@ export interface HikariConfig {
   theme: Theme;
   greeting_enabled: boolean;
   greeting_custom_prompt: string | null;
+  notifications_enabled: boolean;
+  notification_volume: number;
 }
 
 const defaultConfig: HikariConfig = {
@@ -23,6 +25,8 @@ const defaultConfig: HikariConfig = {
   theme: "dark",
   greeting_enabled: true,
   greeting_custom_prompt: null,
+  notifications_enabled: true,
+  notification_volume: 0.7,
 };
 
 function createConfigStore() {

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,
+  });
+}