docs(batch): investigate zstd as batch-compatible compression alternative (#1685)#3492
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…tive (#1685) Documents whether zstd can serve as a batch-compatible compression alternative for `--write-batch` and `--read-batch`. Conclusion: self-hosted batch round-trips work, cross-tool interop with upstream does not (batch header records only `do_compression` bit, not the algorithm name, so a zstd batch would be mis-decoded by upstream rsync). Salvaged from worktree branch docs/zstd-batch-compatibility-audit.
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…tive (#1685) (#3492) Documents whether zstd can serve as a batch-compatible compression alternative for `--write-batch` and `--read-batch`. Conclusion: self-hosted batch round-trips work, cross-tool interop with upstream does not (batch header records only `do_compression` bit, not the algorithm name, so a zstd batch would be mis-decoded by upstream rsync). Salvaged from worktree branch docs/zstd-batch-compatibility-audit.
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Summary
docs/audits/zstd-batch-compatibility.mddo_compressionbit without naming the algorithm--compress+--write-batchCloses #1685.
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