a duplicate /d flag in fnm's cmd hook, and why the obvious fixes all fail: parentheses, setlocal, and goto each break batch in a different way.

a mobile client on a bad network will send your mutation twice. idempotency keys are the boring, correct fix, and the details are where the work is.

an unreproducible corruption bug in openplc editor, and what happens when a decorated html string becomes an element's identity.

astro's server output builds your site twice, and tailwind makes the two copies of your css different enough that content hashing cannot deduplicate them.

optimistic responses, manual cache updates, and a difference between them that shows up as a bug much later.

every local dictation tool pastes your previous clipboard sometimes. the fix is not a longer sleep, and my first attempt at it was wrong.