Problem Solving & Design B

The app cleanly separates concerns across three modules, handles the 'Other' platform case with a reveal field, and wraps deletion in a confirmation dialog that restores focus correctly.

• +Deleting a game requires explicit confirmation in a modal dialog, and focus is returned to the triggering button when the dialog closes, preventing accidental data loss.
• +The platform selector reveals a free-text 'Other' field only when needed, keeping the form uncluttered for the common case.
• +New rows receive a brief ring-glow animation on add, respecting the prefers-reduced-motion media query by skipping the effect entirely.

Completeness A

All five brief features are fully implemented end-to-end, with localStorage persistence and a polished empty state, but storage write failures are caught silently without surfacing a visible error to the user.

• +The empty state renders a dedicated panel with an emoji, heading, and hint text whenever the game list is empty, giving new users a clear starting point.
• +The summary bar updates live with per-status counts and a proportional coloured progress bar after every add, update, or delete.

Technical Craft C

Logic is split across three well-named modules with JSDoc annotations throughout, but the project ships no TypeScript or schema-based type definitions and the test file is not wired into any CI or npm test runner that the measured tooling could detect.

• +Core backlog operations (add, update, delete, count) live in pure functions in backlog.js with no DOM or storage coupling, making them straightforward to reason about in isolation.
• +loadGames re-validates every stored entry through the same isValidGame guard used for new input, dropping corrupt entries and reporting a count of skipped items rather than silently discarding them.
• -JSDoc annotations are used throughout but TypeScript or an explicit schema library is absent, so the type definitions are not machine-enforced and can drift from runtime behaviour without a build-time error.
• -test.js contains a thorough suite of unit tests, but the npm 'test' script runs node test.js directly with no test framework, meaning the measured tooling did not recognise it as automated tests.