nx_ecomat_domledger_lib.nx

nx_ecomat_domledger_lib.nx -- emit the PER-DOMAIN maturity ledger, the missing data that makes growth attribution exact. WHY: the aggregate ledger keeps only sum_cur/sum_bar/domains, so once a domain is added you can never again separate a rung CLIMBED from a rung DECLARED (measured 2026-07-31: only 406 permil of observed movement was attributable). Writing who held what, per beat, closes that permanently. The walk mirrors em_rollup_store EXACTLY -- same key order, same live-derive override via em_domain_level -- so the per-domain rows must reconcile with the aggregate to the level. The sibling gate asserts that reconciliation; two derivations of the same quantity that are never compared are just two chances to be wrong. license_tier: ORIGINAL No hw writes (Rule 26).