HotSpot [Bytestream]: inefficient single-byte appends in ByteStream

During encoding, the encoder frequently writes data one byte at a time. This step introduces considerable unnecessary overhead, and the computation pipeline can be streamlined to improve performance.

Start by locating the ByteStream implementation and the encoder call sites that append one byte at a time. Trace the encoding path and establish a performance baseline before choosing a batching approach; done means the output remains correct and the reported single-byte append overhead is reduced.

Written by the indexing model from the issue text.