nx_schematic.nx

nx_schematic.nx -- LIB: schematic capture -> NETLIST, the front of the EDA flow, as a digital twin of a real schematic. A schematic = pins (each pin belongs to a component and is wired to a NET, or -1 = floating). The netlist is the exact connectivity that feeds place-and-route. Carries ERC (electrical rule check) with REAL rules: no FLOATING pins, no SINGLE-PIN nets -- the same checks a real EDA tool flags. Hands off to nx_pcb_autoroute (each routable net is a routing job). never-brick #26: pure arithmetic, bounded, deterministic. license_tier: ORIGINAL