D238 - /download0 exists only while the title does

status: measured

The report is written to /download0/obscene-report.txt, which the platform mounts at /mnt/sandbox/download/<TITLEID> outside the sandbox. That mount is torn down when the title exits. A run that completes leaves no file behind to fetch; listing the directory afterwards gives No such file or directory, and so does the directory above it.

Measured directly: ls /mnt/sandbox/download/OBSC00001 listed both obscene-boot.txt and obscene-report.txt while the suite was running, and the whole path was gone a minute later.

So retrieval is not something done after a run - it is something done during one, or through a channel that leaves the sandbox as the run proceeds. The system log is that channel (D233), and this is the second reason it is written unconditionally rather than chosen between: it is the only destination whose output survives the process that produced it.