fix: coalesce concurrent notification count reads

src/modules/notifications/store/notifications.ts

@@ -9,7 +9,19 @@ export const useNotificationsStore = defineStore('client-notifications', () => {
 
   const hasUnread = computed(() => (unreadCount.value ?? 0) > 0)
 
-  async function refreshUnreadCount() {
+  let pending: Promise<void> | null = null
+
+  async function refreshUnreadCount(afterMutation = false): Promise<void> {
+    if (pending) {
+      if (!afterMutation) return pending
+      await pending
+      return refreshUnreadCount()
+    }
+    pending = loadUnreadCount().finally(() => { pending = null })
+    return pending
+  }
+
+  async function loadUnreadCount() {
     loading.value = true
     errorMessage.value = ''
     try {