An empty memory.max reads as Number('') = 0 without the empty-string term, so a
sandbox that stubs /sys/fs/cgroup with zero-length files would ship a 0 MB
ceiling and a false mem-available-cgroup-capped label. No test held that term.
The doc said the main process started 'hours earlier' in all three reports;
2ea53f9c is 42 m 55 s. Replaced with the measured per-report uptimes.