Next-Gen Image (.WebP RIFF, .AVIF ISOBMFF & .JXL) Chunk Topology & Encoder Provenance X-Ray

Deterministic RIFF WebP chunk-order & VP8/VP8L bitstream quantization-header parser + ISO BMFF AVIF ('av01' OBU Sequence Header & 'colr'/'ipma') inspector + ISO/IEC 18181 JPEG XL ('JXL ') box/Brotli metadata decoder engine (.webp, .avif, .jxl) built for Google Chrome, Cloudflare Polish, Apple Safari, Shopify / E-Commerce — zero-upload ephemeral Wasm RAM execution.