Function WriteFileBytes

src/platform/linux/schema_fetch.cpp:485–491

};

static bool WriteFileBytes(const std::string& path, const uint8_t* data, size_t len) {
    FILE* f = fopen(path.c_str(), "wb");
    if (!f) return false;
    size_t w = fwrite(data, 1, len, f);
    fclose(f);
    return w == len;
}

bool HandleInbound819(const uint8_t* data, uint32_t len) {
    if (!data || len < 8) return false;