The client mounts brickdb.zip with LDD's own zip reader. It is lenient about
compression, order and extra entries, but loses the whole brick database
when the files sit under a wrapping folder or "./", use backslashes, carry
ZIP64 end records, or set the data descriptor flag with sizes still in the
local header. tools/brickdb/repack.py rebuilds the shipped layout (a
round trip gives the identical file), adds or replaces entries from an
overlay folder, and checks a zip against the reader's rules.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
