ORBIT PAIRS: a playable memory game

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Exact request

Create two additional public demonstrations in this same project; do not change website/index.html. (1) game/index.html: a polished, self-contained vanilla HTML/CSS/JS 4x4 memory-pairs game called ORBIT PAIRS, with eight pairs of space-themed symbols, move counter, elapsed timer, matched count, win message, restart, keyboard-operable cards, and reduced-motion support. No packages, downloads, external assets, network calls, storage, credits or deployment. (2) A controlled bug-repair exercise, not a real production incident: preserve bugfix/before.js exactly as: export function totalCents(items) { return items.reduce((sum, item) => sum + Math.round(item.price * 100), 0); } . The defect is that it ignores quantity. Create bugfix/after.js correcting quantity; reject non-integer or negative quantities and negative or non-finite prices; quantity zero is allowed; empty cart totals zero. Provide bugfix/index.html showing the before/after code and a working demo of totals. Provide a README.md inside each folder with limitations and an honest account of checks. Only write these files. Do not launch browsers or execute commands; I will perform independent tests. End when files are written.

Follow-up requests

Independent QA found one accessibility defect in game/index.html: hidden cards currently expose their symbol names in aria-label, revealing all pairs to a screen reader. Change only the game so hidden cards are labeled Card N, hidden, with no symbol until revealed or matched. Preserve keyboard controls, counters and restart. Update game/README.md to disclose this follow-up. Do not run commands or browsers; stop after editing.

One final accessibility follow-up in game/index.html: the header restart button loses its accessible name on narrow screens when its text is hidden. Give that button a persistent descriptive accessible name such as New orbit. Change no game logic. Record this in game/README.md. Do not run commands or browsers.

Checks and limits

• Operator check: embedded JavaScript parses.
• Operator check: no external asset dependencies or network/storage API calls in the inline script.
• Operator browser checks: keyboard selection, unmatched cards hiding again, move/timer updates, all eight pairs matched, victory message and restart resetting counters.
• Operator accessibility inspection: hidden cards no longer reveal symbols in their accessible names. This is not a full assistive-technology audit.

No validated end-to-end timing or general performance claim is made.

• A small browser prototype, not a production game.
• Randomized decks; progress is not saved.
• The Agent was instructed not to execute checks; all published checks are subsequent operator checks.

Human and operator interventions

• Codex supplied the brief and operated Agent.
• Codex exported and tested the files without modifying the generated code.
• Both additional cases were requested in the same project and conversation after the website.
• Operator QA found hidden-card labels leaking symbols and an unnamed mobile restart control; Agent was asked to repair both. The operator did not rewrite game code.

Download and verify the actual files

Generated source is preserved unchanged. Operator-created test records and presentation wrappers are identified above. Compare each file's SHA-256 with this record.

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