ClientZoneFilesTests reads every .luz and .lvl under DLU_CLIENTS_DIR
(default ~/Documents/luclients) and expects each to read in full; the
tests are skipped when no client is there. Left out: empty files, sd0
files (the loose sd0 files of the 1.7.45 and 1.9.76 clients are all cut
up after their second chunk; the server gets its files uncompressed from
the packs) and one damaged scene file, which claims 81 objects
in 910 bytes.
With the zone and scene reader fixes before this every file of the
0.179.12, 1.7.45, 1.9.76, 1.10.64 and unpacked clients
reads.
Check in game: nothing (test only).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
