feat(admin-ui): Phase 1 lineage UI — "Used by" + record refs cards

dict-relationships-v2 epic, Phase 1 admin UI. Backend endpoints поднимаются
коммитом 46a0a9c, тут — UI surface'ит их.

Что добавлено:
- `DictionaryDependentsPanel` — schema-level "На этот словарь ссылаются:"
  panel на странице справочника. Chip per (sourceDict.field → targetField,
  active records count, onClose mode badge: block/warn/cascade).
  Hide-on-empty: большинство справочников без incoming refs panel не видят.
- `RecordDependentsPanel` — record-level "На эту запись ссылаются:" section
  внутри `RecordHistoryDrawer`. Per-source summary chips + paginated items
  list (size=20, prev/next). Hide-on-empty.

Types в `client.ts`: `OnCloseAction`, `SchemaDependent`, `RecordDependent`,
`PerSourceSummary`, `RecordDependentsPage`.

Queries в `queries.ts`:
- `useDictionaryDependents(name)` — staleTime 5min (schemas slow-moving),
  404/403 → empty.
- `useRecordDependents(dict, key, page, size)` — disabled пока key undefined.

Mount points:
- `routes/dictionaries.$name.tsx`: `<DictionaryDependentsPanel>` после
  PageHeader, перед AOI banner.
- `components/record/RecordHistoryDrawer.tsx`: `<RecordDependentsPanel>`
  выше existing version timeline.

i18n RU/EN:
- `lineage.usedBy.{title,count,activeCount,openSourceDict}`
- `lineage.refs.{title,total,field,created,openSourceRecord}`
- `lineage.onClose.{BLOCK,WARN,CASCADE}` (показ как лейблы)
- `pagination.{prev,next,pageOf}` — общие keys.

Plurals: `_one/_few/_many/_other` для RU (правильная грамматика count'ов).

Verify:
- pnpm tsc --noEmit: clean.
- pnpm test (vitest): 89/89 PASS (4.04s).
- pnpm build: clean (warnings о chunk size — pre-existing для @nstart/ui).

Бекенд endpoints живут на:
- GET /api/v1/dictionaries/{name}/dependents
- GET /api/v1/records/{dict}/{key}/dependents?page&size

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

@@ -8,7 +8,9 @@ import {
   type DlqPage,
   type FlattenedRecord,
   type OutboxStats,
+  type RecordDependentsPage,
   type RecordResponse,
+  type SchemaDependent,
   type WebhookDeliveryPage,
   type WebhookSubscription,
 } from './client'
@@ -265,6 +267,70 @@ export const webhookDlqQuery = (page: number, size: number) =>
 export const useWebhookDlq = (page: number, size: number) =>
   useQuery(webhookDlqQuery(page, size))
 
+// === Dependents (Phase 1 dict-relationships-v2) ===
+
+/**
+ * Schema-level reverse FK list для target dict — какие dict.field ссылаются.
+ * 5 min staleTime: schema-level changes идут через bundle import (редко).
+ *
+ * 404 / 403 → пустой list (consistent с serverside scope-hide).
+ */
+export const dictionaryDependentsQuery = (name: string) =>
+  queryOptions({
+    queryKey: ['dictionary-dependents', name] as const,
+    queryFn: async (): Promise<SchemaDependent[]> => {
+      try {
+        const { data } = await apiClient.get<SchemaDependent[]>(
+          `/dictionaries/${encodeURIComponent(name)}/dependents`,
+        )
+        return data
+      } catch (e: unknown) {
+        const status = (e as { response?: { status?: number } })?.response?.status
+        if (status === 404 || status === 403) return []
+        throw e
+      }
+    },
+    staleTime: 5 * 60_000,
+  })
+
+export const useDictionaryDependents = (name: string | undefined) =>
+  useQuery({
+    ...dictionaryDependentsQuery(name ?? ''),
+    enabled: Boolean(name),
+  })
+
+/**
+ * Record-level dependents — paginated. Disabled пока businessKey пустой
+ * (closed drawer / no selection).
+ */
+export const recordDependentsQuery = (
+  dict: string,
+  businessKey: string,
+  page: number,
+  size: number,
+) =>
+  queryOptions({
+    queryKey: ['record-dependents', dict, businessKey, page, size] as const,
+    queryFn: async (): Promise<RecordDependentsPage> => {
+      const { data } = await apiClient.get<RecordDependentsPage>(
+        `/records/${encodeURIComponent(dict)}/${encodeURIComponent(businessKey)}/dependents`,
+        { params: { page, size } },
+      )
+      return data
+    },
+  })
+
+export const useRecordDependents = (
+  dict: string,
+  businessKey: string | undefined,
+  page = 0,
+  size = 50,
+) =>
+  useQuery({
+    ...recordDependentsQuery(dict, businessKey ?? '', page, size),
+    enabled: Boolean(businessKey),
+  })
+
 export const useDictionaries = () => useQuery(dictionariesQuery)
 export const useDictionaryDetail = (name: string) => useQuery(dictionaryDetailQuery(name))
 export const useRecords = (