tests/__init__.py keeps a run offline, its scratch under tmp/ and its
installer cache its own, but only discover -s tests -t . imported it.
discover tests ran with RETROBIOS_OFFLINE unset, scratch on the /tmp
tmpfs and the user's real installer cache, the setting in which e2e
fixtures had written into the shared .cache/large. Every test module now
imports the package first, and a test fails on a module that does not.
test_verify_listing.py took its line with the previous commit.
164 entries wore the in repo badge with no copy named: they are held as
a ZIP member or in a data directory, which the database does not index.
held_copy() finds that copy and the card names it. storage: large_file
no longer counts as held by itself: kenji-nx's user-picked firmware
package read as held although nothing collects it.