chore: migrate to KT financial system

apps/backend/api/finance/media/[id].get.ts

@@ -0,0 +1,22 @@
+import { getRouterParam } from 'h3';
+
+import { getMediaMessageById } from '~/utils/media-repository';
+import { useResponseError, useResponseSuccess } from '~/utils/response';
+
+export default defineEventHandler((event) => {
+  const idParam = getRouterParam(event, 'id');
+  const id = idParam ? Number.parseInt(idParam, 10) : NaN;
+
+  if (!Number.isInteger(id)) {
+    return useResponseError('媒体ID不合法', -1);
+  }
+
+  const media = getMediaMessageById(id);
+
+  if (!media) {
+    return useResponseError('未找到对应的媒体记录', -1);
+  }
+
+  return useResponseSuccess(media);
+});
+