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/client.ts

@@ -242,6 +242,50 @@ export type WebhookDeliveryPage = {
   size: number
 }
 
+// === Dependents (Phase 1 dict-relationships-v2) ===
+
+export type OnCloseAction = 'BLOCK' | 'WARN' | 'CASCADE'
+
+export type SchemaDependent = {
+  sourceDict: string
+  sourceDisplayName?: string | null
+  sourceField: string
+  targetField: string
+  onClose: OnCloseAction
+  /** Total active records in source dict (для UI badge "X записей всего"). */
+  activeRecordsInSourceDict: number
+}
+
+export type RecordDependent = {
+  sourceDict: string
+  sourceDisplayName?: string | null
+  sourceField: string
+  onClose: OnCloseAction
+  id: string
+  businessKey: string
+  validFrom: string
+  validTo: string
+  createdAt: string
+}
+
+export type PerSourceSummary = {
+  sourceDict: string
+  sourceDisplayName?: string | null
+  sourceField: string
+  onClose: OnCloseAction
+  count: number
+}
+
+export type RecordDependentsPage = {
+  targetDict: string
+  targetBusinessKey: string
+  items: RecordDependent[]
+  perSource: PerSourceSummary[]
+  total: number
+  page: number
+  size: number
+}
+
 export type WebhookTestPingResult = {
   /** success | failure | rejected */
   status: 'success' | 'failure' | 'rejected'