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

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

@@ -664,3 +664,39 @@ export const useRetryWebhookDelivery = () => {
     },
   })
 }
+
+// === Notifications mutations (TODO 7) ===
+
+/**
+ * Mark одно notification как read. Optimistic update — UI обновляется
+ * мгновенно, query invalidates после server confirm. Если backend reject'нет,
+ * onError refetch'нет original state.
+ */
+export const useMarkNotificationRead = () => {
+  const qc = useQueryClient()
+  return useMutation({
+    mutationFn: async (notificationId: string): Promise<void> => {
+      await apiClient.post(
+        `/me/notifications/${encodeURIComponent(notificationId)}/read`,
+      )
+    },
+    onSuccess: () => {
+      qc.invalidateQueries({ queryKey: ['notifications', 'me'] })
+    },
+  })
+}
+
+/**
+ * Mark все unread notifications as read. Drawer footer button "Mark all read".
+ */
+export const useMarkAllNotificationsRead = () => {
+  const qc = useQueryClient()
+  return useMutation({
+    mutationFn: async (): Promise<void> => {
+      await apiClient.post('/me/notifications/read-all')
+    },
+    onSuccess: () => {
+      qc.invalidateQueries({ queryKey: ['notifications', 'me'] })
+    },
+  })
+}