feat(changelog): wire up History tab to /changelog endpoint + diff modal

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

@@ -4,6 +4,8 @@ import {
   type AuditFilters,
   type AuditPage,
   type CascadePlan,
+  type ChangelogDiff,
+  type ChangelogResponse,
   type DictionaryDefinition,
   type DictionaryDetail,
   type DlqPage,
@@ -138,6 +140,58 @@ export const useRecordHistory = (
     enabled: Boolean(businessKey),
   })
 
+// === Changelog (schema versions timeline) ============================
+
+/**
+ * Per-dict changelog. Backend default limit=50; покрывает типичные ~5-30
+ * schema versions без pagination. Cursor можно добавить позже без
+ * breaking change.
+ */
+export const changelogQuery = (dictionaryName: string, limit = 50) =>
+  queryOptions({
+    queryKey: ['changelog', dictionaryName, limit] as const,
+    queryFn: async (): Promise<ChangelogResponse> => {
+      const { data } = await apiClient.get<ChangelogResponse>(
+        `/dictionaries/${dictionaryName}/changelog`,
+        { params: { limit } },
+      )
+      return data
+    },
+  })
+
+export const useChangelog = (dictionaryName: string | undefined, limit = 50) =>
+  useQuery({
+    ...changelogQuery(dictionaryName ?? '', limit),
+    enabled: Boolean(dictionaryName),
+  })
+
+/**
+ * Full before/after diff payload для одного changelog entry'я. Lazy —
+ * fetch только когда юзер раскрывает Compare modal. Кешируем по
+ * (dict, entryId) — diff immutable, можно держать stale infinitely
+ * (audit_log row не меняется).
+ */
+export const changelogDiffQuery = (dictionaryName: string, entryId: number) =>
+  queryOptions({
+    queryKey: ['changelog-diff', dictionaryName, entryId] as const,
+    queryFn: async (): Promise<ChangelogDiff> => {
+      const { data } = await apiClient.get<ChangelogDiff>(
+        `/dictionaries/${dictionaryName}/changelog/${entryId}/diff`,
+      )
+      return data
+    },
+    staleTime: Infinity,
+  })
+
+export const useChangelogDiff = (
+  dictionaryName: string | undefined,
+  entryId: number | undefined,
+) =>
+  useQuery({
+    ...changelogDiffQuery(dictionaryName ?? '', entryId ?? 0),
+    enabled: Boolean(dictionaryName) && Boolean(entryId),
+  })
+
 export const recordRawQuery = (dictionaryName: string, businessKey: string) =>
   queryOptions({
     queryKey: ['record-raw', dictionaryName, businessKey] as const,