nx_market_rt.nx

nx_market.nx -- GO-TO-MARKET / UNIT ECONOMICS. Engineering-ready + buildable + provable is not the same as SELLABLE. This closes the business side: the bench prototype's BOM cost -> production cost at volume (Wright's-law learning curve) -> price for a target margin -> gross margin -> break-even volume, and the customer's PAYBACK vs the alternative (for a water system, vs buying bottled water). Composes nx_bom. INTEGER-EXACT, money in cents. Wright's law: unit cost falls by a fixed fraction per DOUBLING of cumulative volume (learning_pct=85 -> 15% cheape each doubling, a standard electronics-assembly rate). Inputs are planning estimates grounded in standard benchmarks (refine with real quotes later); the framework is exact. THE exceed: the go-to-market decision is COMPUTED -- margin, break-even, and customer ROI from the real BOM -- not guessed. A product is viable only if it clears a healthy margin AND pays the customer back within a year. grounded: wrights_law_experience_curve + gross_margin + break_even_analysis + unit_economics genealogy_id: unit_economics_go_to_market + nishi_market