Deterministic JPEG marker-order & Huffman/Quantization (DQT/DHT) hash lookup against 1,400+ camera/OS/messenger firmware profiles + chroma subsampling (4:4:4 vs 4:2:0) & dimension-ratio audit engine (.jpg, .jpeg, .png, .heic) built for Avito, Auto.ru, eBay, Insurance Claims — zero-upload ephemeral Wasm RAM execution.
Running ephemeral Wasm verification…