[correctness] apps/haskell/static/app.js:22 — Every action response replaces the entire list, discarding any edit started while that request was pending. Toggle one item, then double-click another and type before the response arrives: the editor disappears and the typed changes are lost. Preserve pending edits when applying responses.
[spec] apps/haskell/app/Main.hs:103 — parseListen accepts any 127.x.x.x address, although the brief requires binding only to 127.0.0.1. For example, --listen 127.0.0.2:8080 passes validation. Require the exact permitted address.
amadan