Move binary data (blobs, decoded audio/image bytes, file contents) between native C++ and JS without a memcpy, using jsi::MutableBuffer + Runtime::createArrayBuffer (returning data) and ArrayBuffer::tryGetMutableBuffer (reading data). Use when the user asks to make binary data transfer faster, mentions large ArrayBuffers/blobs/buffers crossing the JSI boundary, or the target project's own JSVariant ArrayBuffer conversion (in {Prefix}Utils.cpp's to_jsi()/to_variant(), if generated by create-pure-module) is a suspected bottleneck — that code path copies via the JS ArrayBuffer constructor + memcpy, which this skill's technique avoids. Not worth it for small or infrequent buf…
