nx_skintex_probe.nx

nx_skintex_probe.nx -- decode a real skin texture and report what is actually in it. The arousal skin model computes reflectance from melanin + haemoglobin and was generating flat colour with hash-noise micro-variation standing in for pores. A real Std_Skin_*_Diffuse map IS the melanin/albedo term, measured off an actual character asset instead of invented -- so the physiology can MODULATE a real albedo rather than replace it. This probe exists before any wiring: prove the decode, learn the resolution, and measure the tone distribution. Building the shader path on an unverified decode would be building on a guess. usage: nx_skintex_probe <file.jpeg> license_tier: ORIGINAL expect_exit: 0 ⚠NOT nx_jpeg_ascii: that module's decode_rgb only probes the SOF for dimensions (it backs the JPEG->ASCII-art path). It returned rc=0 with correct 2048x2048 dims and ONE non-black pixel out of 16384 sampled -- a success code over an empty buffer. nx_jpeg_decoder is the real baseline DCT decoder (DQT/DHT/SOS/Huffman). Picking the first symbol that matched the name cost a build cycle.