Repairing a quantity bug: before and after

Try the original output

This isolated preview cannot access your Donatello account. Use fictional sample details only; this is not a real business or contact service.

Open full-window demo ↗

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.

Checks and limits

• Operator check: embedded JavaScript parses.
• Operator check: no external asset dependencies or network/storage API calls in the inline script.
• Operator unit tests: the original returns 1,250 cents for 3 × 12.50; the repair returns 3,750. Empty cart, zero quantity, zero price and multiple lines pass. Negative/fractional/non-number quantities and negative/non-finite/non-number prices are rejected.
• Operator browser checks: clear cart produces zero totals; adding 3 units at 12.50 shows 12.50 before repair and 37.50 after repair.

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

• A controlled defect supplied in the prompt, not a production incident.
• The preview mirrors the reference JavaScript functions; no real checkout or payment.
• Uses JavaScript rounding, not decimal-exact accounting; not reviewed for arbitrary large financial inputs.
• 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.

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.

Download provenance manifest (JSON)