Module zstd 

src/compression/codecs/zstd.rs

Zstd streaming compressor/decompressor.

Design notes:

• Wraps zstd streaming encoder/decoder with trait objects for uniform pipeline use.
• Errors are mapped into CompressionError variants with codec context.
• Compressor accumulates into an internal Vec; finish consumes encoder safely.
• Decompressor buffers input and reconstructs decoder per chunk for simplicity.

Structs

ZstdCompressor

Zstd streaming compressor.

ZstdDecompressor

Zstd streaming decompressor.