feat: 将视频转写重构为纯文字异步语音识别

lib/minio.ts

@@ -338,3 +338,8 @@ export default {
   validateFileSize,
   formatFileSize,
 };
+
+/** Upload derived ASR audio without changing bucket policy. */
+export async function uploadTranscriptionAudio(path: string, buffer: Buffer) {
+  await minioClient.putObject(BUCKET_NAME, path, buffer, buffer.length, { "Content-Type": "audio/mpeg" });
+}