feat(web): auth/ui/notifications pinia stores + theme composable

web/src/stores/notifications.ts

@@ -0,0 +1,27 @@
+import { defineStore } from 'pinia'
+import { ref } from 'vue'
+
+export interface Notification {
+  id: string
+  topic: string
+  severity: 'info' | 'warning' | 'error'
+  title: string
+  body: string
+  link?: string
+  read_at?: string
+  created_at: string
+}
+
+export const useNotificationsStore = defineStore('notifications', () => {
+  const items = ref<Notification[]>([])
+  const unreadCount = ref(0)
+
+  function setItems(list: Notification[]) {
+    items.value = list
+  }
+  function setUnreadCount(n: number) {
+    unreadCount.value = n
+  }
+
+  return { items, unreadCount, setItems, setUnreadCount }
+})