burn v1.0.0

First public release. Local, zero-dependency, cross-agent AI cost ledger: spend per repo / model / day / branch, honest cost provenance (billed vs estimated vs unpriced), work attribution, budgets with exit 3, teams with no backend, and the ULP 1.0 protocol.

Install: curl -fsSL https://raw.githubusercontent.com/aashish254/burn/main/install.sh | bash