Feat/tensor compression clean#1
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Adds an opt-in per-row zstd compression path for the SimpleStorage manager <-> storage-unit data plane. The storage unit never invokes the compression backend; compression happens once on PUT (manager encode), decompression once on GET (manager decode). Configure via backend.SimpleStorage.compression in config.yaml or TQ_COMPRESSION_ALGORITHM/LEVEL/MIN_BYTES env vars. Implementation lives entirely in compression.py + a small Ext(6) branch in serial_utils.py + per-instance encoder/decoder threaded through ZMQMessage.serialize/deserialize. Module-level _encoder/_decoder are never rebound, so manager and SU colocated in the same process never share compression state. data_parser is incompatible with row-compressed PUT and is rejected at put_data entry. Signed-off-by: lynn <33576786+0lynnlin0@users.noreply.github.com> Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> Signed-off-by: mpb159753 <m.pb@msn.com>
Return raw input directly instead of creating a copy via bytes(). These functions serve as no-op backends when algorithm="none". Signed-off-by: mpb159753 <m.pb@msn.com>
Signed-off-by: 看我72遍 <m.pb@msn.com>
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