test: raise utility coverage to 100%#12

MFei8ht wants to merge 2 commits into

eliottreich:maineliottreich/tiny-utils:mainfrom

MFei8ht:codex/taskbounty-coverage-upliftMFei8ht/taskbounty-dogfood-tiny-utils:codex/taskbounty-coverage-upliftCopy head branch name to clipboard