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feat: optional zstd compression of block and undo files - #7939

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knst wants to merge 8 commits into

dashpay:developfrom

knst:feat-zstd-blocks

Open

feat: optional zstd compression of block and undo files#7939
knst wants to merge 8 commits into
dashpay:developfrom
knst:feat-zstd-blocks

Commits on Oct 22, 2026
- feat: add zstd as an optional dependency
  knst
  committed
  782d37e
- feat: add zstd compress/decompress helpers
  knst
  committed
  9dba17d
Commits on Oct 24, 2026
- feat: read block records through a raw-record helper
  knst
  committed
  4fb54c1
- feat: write new block records zstd-compressed
  knst
  committed
  d674946
- test: report zstd availability in test/config.ini
  knst
  committed
  67e5350
- test: cover pruning over zstd-compressed block files and adoption of linearize-data.py
  knst
  committed
  4c8863c
- feat: write block undo records zstd-compressed
  knst
  committed
  ba71ee0
- feat: keep -blockcompression at 0 by default until v25
  knst
  committed
  d1e1aa6