feat(webhook): time-series histogram stats endpoint + frontend chart

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

@@ -330,6 +330,24 @@ export type WebhookDeliveryPage = {
   size: number
 }
 
+/** Один bucket histogram time-series stats. ISO ts + counts по status. */
+export type WebhookStatsBucket = {
+  ts: string
+  pending: number
+  retrying: number
+  delivered: number
+  dlq: number
+  total: number
+}
+
+/** Response от GET /admin/webhooks/subscriptions/{id}/stats. */
+export type WebhookDeliveryStats = {
+  bucketBy: 'hour' | 'day'
+  from: string
+  to: string
+  buckets: WebhookStatsBucket[]
+}
+
 // === Approval Workflow v2 ===
 
 export type DraftStatus = 'PENDING' | 'APPROVED' | 'REJECTED' | 'WITHDRAWN'

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

@@ -21,6 +21,7 @@ import {
   type SchemaDependent,
   type SearchResponse,
   type WebhookDeliveryPage,
+  type WebhookDeliveryStats,
   type WebhookSubscription,
 } from './client'
 
@@ -440,6 +441,47 @@ export const webhookDlqQuery = (page: number, size: number) =>
 export const useWebhookDlq = (page: number, size: number) =>
   useQuery(webhookDlqQuery(page, size))
 
+export const webhookStatsQuery = (
+  id: string,
+  bucketBy: 'hour' | 'day',
+  fromIso?: string,
+  toIso?: string,
+) =>
+  queryOptions({
+    queryKey: [
+      'webhooks',
+      'stats',
+      id,
+      bucketBy,
+      fromIso ?? null,
+      toIso ?? null,
+    ] as const,
+    queryFn: async (): Promise<WebhookDeliveryStats> => {
+      const params: Record<string, string> = { bucketBy }
+      if (fromIso) params.from = fromIso
+      if (toIso) params.to = toIso
+      const { data } = await apiClient.get<WebhookDeliveryStats>(
+        `/admin/webhooks/subscriptions/${encodeURIComponent(id)}/stats`,
+        { params },
+      )
+      return data
+    },
+    // Stats для admin dashboard — fresh data важна, но автополлинг мы
+    // отключаем (юзер сам refresh'ит / меняет range).
+    staleTime: 30 * 1000,
+  })
+
+export const useWebhookStats = (
+  id: string,
+  bucketBy: 'hour' | 'day',
+  fromIso?: string,
+  toIso?: string,
+) =>
+  useQuery({
+    ...webhookStatsQuery(id, bucketBy, fromIso, toIso),
+    enabled: Boolean(id),
+  })
+
 // === Dependents (Phase 1 dict-relationships-v2) ===
 
 /**