nx_underbuilt_board.nx

nx_underbuilt_board.nx -- R6 THE UNDERBUILT-PART BOARD (cadtwin ladder; operator: identify underbuilt parts when flipping cars). Reads the banked NHTSA complaints+recalls JSON (nx_underbuilt_fetch) and prints, per vehicle: total complaints, per-COMPONENT frequency ranked with permille share, crash/fire tallies, and the recall components (mandated fixes = confirmed underbuilt). All parsing = nx_underbuilt_lib context-byte JSON scan; deterministic integer output. Vehicles grow as DATA rows in main (add a fetch row + a board row). expect_exit: 0 license_tier: ORIGINAL