OXYGENHUB

Changes up to # 36537112fcac touching docs/plan.md · 2

See as swimlanes (independent work side by side)

The ledger: hash-chained events in the frozen envelope, signed checkpoints, admin verify, check and rebuild (#3) head
Andy McCall via agent:claude@andymccall agent ·
◈ 36537112fcac
Project skeleton in Oxygen's shape: workspace, deps/oxygen pinned, make check, version, deps-check (#1)
Andy McCall via agent:claude@andymccall agent ·
◈ 258bb3824813