TPC-DS parallel generation + io_uring streaming + tpch cleanup#13

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tsafin merged 12 commits intomasterfrom

tsafin/parallel_tpcds

Mar 18, 2026

Commits on Mar 18, 2026

fix: address Copilot review comments on io_uring + parquet writer

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docs: fix stale Flush/Close comments in IoUringOutputStream header
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