I write tests where money and on-hand move. Views can be ugly. Duplicate receipts cannot.
I keep a fixture warehouse in dev: a handful of SKUs, a lookalike pair, an unknown item. Every time I touch receiving, I run that story by hand too, because some bugs are about thumbs.
Automate the boring, walk the floor for the rest
Unit tests on branded types and pack-qty math. A short checklist on camera permission, offline queue, and a rejected visual match. I do not pretend coverage percent equals safety.
Production is not your test env
A "quick try" on a live bin needs a flag. I have used a dry-run toggle more than I have used a staging build that nobody trusted.
