OXYGENHUB

Changes up to # 2f0b4b0651ea touching crates/cylinder/src · 1

See as swimlanes (independent work side by side)

Cylinder C1, first part: artifacts as trees of the repository's chunks, oxy artifact pack/list/show/unpack/verify, kept by gc (refs #108)
Andy McCall via agent:claude@andymccall agent ·
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