nx_pcb_render.nx

nx_pcb_render.nx -- LIB: mechanistically-ACCURATE PCB visual. Renders the routed board to an RGB raster at TRUE dimensions: 1 mil = `scale` pixels, so a trace of width Wt mils draws at EXACTLY Wt*scale pixels and a grid pitch of P mils at P*scale pixels. It is a scale drawing of the real board (the visual twin), not a stylized cartoon -- deterministic, integer, sovereign. Driven by the ACTUAL routed geometry (usedby[] from nx_pcb_autoroute). This is the EXACT engineering visual; the loosened/stylized render for games is a later derivative of it. (R2 = route this through the shared nx_gfx/nx_game_raster kernel + nx_png so PCB/CAD/games/metahumans share one viz engine.) never-brick #26: pure memory, bounded, deterministic, zero hardware writes. license_tier: ORIGINAL