Ensure timely delivery of notifications to iOS devices

Add `urgency: "high"` to the push notification payload in `push.ts` to prioritize delivery for iOS PWA users.

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artifacts/api-server/src/lib/push.ts

@@ -322,7 +322,12 @@ export async function sendPushToUser(
             keys: { p256dh: sub.p256dh, auth: sub.auth },
           },
           json,
-          { TTL: 60 },
+          // iOS PWA receives Web Push through APNs and will *silently
+          // delay* or coalesce notifications unless we mark them as
+          // `urgency: 'high'`. Without this, an order/meeting alert
+          // can land minutes after the event with no sound. TTL stays
+          // short — a 60-second-old "new order" ping is useless.
+          { TTL: 60, urgency: "high" },
         );
         await db
           .update(pushSubscriptionsTable)