CI invokes hack/cozytest.sh, a project-local pure-shell harness, not
bats. cozytest does not honor setup()/teardown() and does not provide
bats' run / $status / $output, so the original tests failed with
"TMPDIR: parameter not set" under set -u.
Inline tmpdir creation and an EXIT trap for cleanup in each test.
Replace `run` + `$output` with direct command substitution, and
replace `! grep` (which set -e ignores) with an explicit if-then-exit.
Signed-off-by: Myasnikov Daniil <myasnikovdaniil2001@gmail.com>
Myasnikov Daniil
77f80b597f