fixes

adapters/s3_adapter.py

@@ -63,10 +63,12 @@ class S3Adapter:
                 response = await client.get_object(Bucket=self.bucket_name, Key=object_name)
                 # aioboto3 Body is an aiohttp StreamReader wrapper
                 body = response['Body']
-                data = await body.read()
-                # Yield in chunks to avoid holding entire response in StreamingResponse buffer
-                for i in range(0, len(data), chunk_size):
-                    yield data[i:i + chunk_size]
+                
+                while True:
+                    chunk = await body.read(chunk_size)
+                    if not chunk:
+                        break
+                    yield chunk
         except ClientError as e:
             print(f"Error streaming from S3: {e}")
             return