nx_vision_pipeline_test.nx

nx_vision_pipeline_test.nx -- full-substrate integration test. Builds a single synthetic 32x32 RGB image with known features (skin-toned background, a bright blob, a vertical edge, a circle) and runs every vision primitive across L0->V10 in sequence. Verifies cross-primitive compatibility and sane output ranges. On any failure returns a unique error code so the smoke runner can pinpoint exactly which primitive class regressed. Coverage: L4 nx_image : alloc, get/set, grayscale, Sobel, gradient mag, Otsu L8 nx_features : Harris, corners, edges, CC, Hu, BRIEF V1 nx_color_v2 : HSV, YCbCr, Kovac skin, palette, dominant V4 nx_geom : Hough lines, Hough circles, orientation hist V5 nx_texture : GLCM (contrast/energy/hom), LBP image+hist V6 nx_scale : Gauss blur, downsample, pyramid 5L, DoG, extrema V2 nx_compose : thirds, H/V symmetry, centroid, balance V3 nx_light : mean, stddev, range, direction hist V8 nx_salience : intensity, combined, peak, flatness V10 nx_aesthetics : full report (5 components + composite)