feat(webhook): delivery list — server-side фильтр по status

Раньше при page=50 admin не мог найти редкий dlq среди
delivered'ов: client-side filter показал бы 1 совпадение из 50,
а на page=1 могли быть ещё. Делаем server-side через ?status=.

Backend:
- WebhookDeliveryRepository.findBySubscriptionIdAndStatusOrderByCreatedAtDesc
  — Spring Data derived query, JPA генерирует SQL.
- GET /admin/webhooks/subscriptions/{id}/deliveries?status=dlq —
  опциональный param. Invalid status → 400 OrdinisException.
  Allowed: pending, retrying, delivered, dlq.

UI:
- 4 chip'а pending/retrying/delivered/dlq над таблицей deliveries
  (одинаковый паттерн со scope-чипами в dictionaries).
- Click toggle + reset page=0. 'Сбросить' появляется когда фильтр
  активен.
- Status в URL пока не персистится — для одной session-страницы
  не критично.

ordinis-admin-ui/src/routes/webhooks.$id.tsx

@@ -53,7 +53,12 @@ function WebhookDetailPage() {
   const { t } = useTranslation()
   const sub = useWebhookSubscription(id)
   const [page, setPage] = useState(0)
-  const deliveries = useWebhookDeliveries(id, page, 50)
+  const [statusFilter, setStatusFilter] = useState<string | undefined>(undefined)
+  const deliveries = useWebhookDeliveries(id, page, 50, statusFilter)
+  const handleStatusToggle = (s: string) => {
+    setPage(0)
+    setStatusFilter((curr) => (curr === s ? undefined : s))
+  }
   const rotateMut = useRotateWebhookSecret()
   const deleteMut = useDeleteWebhook()
   const retryMut = useRetryWebhookDelivery()
@@ -213,6 +218,44 @@ function WebhookDetailPage() {
           />
         </div>
 
+        <div
+          className="flex flex-wrap items-center gap-1.5 mb-3"
+          role="group"
+          aria-label={t('webhooks.deliveries.filter.label')}
+        >
+          {(['pending', 'retrying', 'delivered', 'dlq'] as const).map((s) => {
+            const active = statusFilter === s
+            return (
+              <button
+                key={s}
+                type="button"
+                onClick={() => handleStatusToggle(s)}
+                aria-pressed={active}
+                className={[
+                  'inline-flex items-center gap-1.5 px-2.5 py-1 rounded-sm border text-2xs uppercase tracking-label font-secondary transition-colors',
+                  active
+                    ? 'border-ultramarain bg-ultramarain/8 text-ultramarain'
+                    : 'border-regolith bg-white text-carbon/70 hover:border-carbon/40',
+                ].join(' ')}
+              >
+                {s}
+              </button>
+            )
+          })}
+          {statusFilter && (
+            <button
+              type="button"
+              onClick={() => {
+                setPage(0)
+                setStatusFilter(undefined)
+              }}
+              className="text-xs text-ultramarain hover:underline ml-2"
+            >
+              {t('webhooks.deliveries.filter.clear')}
+            </button>
+          )}
+        </div>
+
         {deliveries.isLoading ? (
           <LoadingBlock size="sm" />
         ) : !deliveries.data || deliveries.data.content.length === 0 ? (