Function updateJs

src/platforms/wasm/js_bindings.cpp.hpp:386–393

* Pure C++ UI Update Function - Simple data processing */

 * Pure C++ UI Update Function - Simple data processing
 */
EMSCRIPTEN_KEEPALIVE void updateJs(const char* jsonStr) {
    fl::printf("updateJs: ENTRY - PURE C++ VERSION - jsonStr=%s\n", jsonStr ? jsonStr : "nullptr");
    
    // Process UI input using pure C++ function
    ::processUiInput(jsonStr);
    
    fl::printf("updateJs: EXIT - PURE C++ VERSION\n");
}

/**
 * Strip Pixel Data Access - Critical JavaScript Bridge