1) Тест «могу писать»: PUT ai_diagnostic/test/original.bin
   Ошибка: HTTP 400
   Тело ответа (фрагмент):
   HTTP/2 400 
   server: nginx
   date: Wed, 17 Jun 2026 01:34:13 GMT
   content-type: application/xml; charset=UTF-8
   content-length: 283
   x-amz-request-id: 2bb7af6cea4727c4
   
   <?xml version="1.0" encoding="UTF-8"?>
   <Error><Code>BucketMaxSizeExceeded</Code><Message>You have attempted to exceed the max size configured for the bucket.</Message><Resource>/skinepic-web-ru/ai_diagnostic/test/original.bin</Resource><RequestId>2bb7af6cea4727c4</RequestId></Error>