Cascade Lens — era-by-era chain fragility

Some fragility lives not in a balance-sheet web but in a macro chain — fertilizer to food to CPIs, with a wage-price loop waiting at the end. This lens reads that chain with the same cascade vocabulary, era by era.

How it reads

Per era: rho, loop_gain for the highlighted loop, and the ladder[] of how far a unit shock travels. A loop gain approaching 1 is the read that matters.