feat(notifications): TODO 7 — draft decision toast + email + bell badge

ordinis-admin-ui/src/api/queries.ts

@@ -7,6 +7,7 @@ import {
   type CascadePlan,
   type ChangelogDiff,
   type ChangelogResponse,
+  type NotificationsResponse,
   type SchemaDraft,
   type SchemaReviewQueuePage,
   type DictionaryDefinition,
@@ -804,3 +805,36 @@ export const serverVersionQuery = queryOptions({
 })
 
 export const useServerVersion = () => useQuery(serverVersionQuery)
+
+// === Notifications (TODO 7: draft decision toast + email) ===
+
+/**
+ * Current user's notifications feed. Backend filters by recipient = sub claim;
+ * returns paginated rows + `totalUnread` для bell badge counter.
+ *
+ * <p>Poll каждые 30s — same cadence как /reviews queue. {@code staleTime} 5s
+ * чтобы query cache не моргал когда user открывает/закрывает drawer.
+ * {@code refetchIntervalInBackground} = true чтобы tab без focus всё равно
+ * decremented badge когда mark-as-read fires.
+ *
+ * <p>Caveat: `unreadOnly=true` gives a tight badge query (1 unread → badge "1"),
+ * full feed query (default) used drawer открыт. Splitting queries keeps badge
+ * fetch cheap when drawer закрыт.
+ */
+export const myNotificationsQuery = (unreadOnly = false, limit = 20) =>
+  queryOptions({
+    queryKey: ['notifications', 'me', { unreadOnly, limit }] as const,
+    queryFn: async (): Promise<NotificationsResponse> => {
+      const { data } = await apiClient.get<NotificationsResponse>(
+        '/me/notifications',
+        { params: { unreadOnly, limit } },
+      )
+      return data
+    },
+    refetchInterval: 30_000,
+    refetchIntervalInBackground: true,
+    staleTime: 5_000,
+  })
+
+export const useMyNotifications = (unreadOnly = false, limit = 20) =>
+  useQuery(myNotificationsQuery(unreadOnly, limit))