Transmission Chain — link-by-link pass-through

When the question is 'how does an energy shock reach the CPI', the honest machine is a declared chain read link by link — each with its own lead, gain and stability, no black box in between.

How it reads

links[] with best-lead / gain / stability per link; end_to_end gain and cumulative lead. The per-link table is the object; the end-to-end number is its summary.