Synthetic exercise · no real orders or external services

Correct arithmetic can still produce the wrong screen.

Each seat costs 25 fictional credits. Regression mode calculates correctly but deliberately displays the price of one seat. Compare the visible result with the requirement.

Presentation mode Seats (whole number, 1–10)

Visible total

Loading the local fixture

Acceptance check: not run

Expected and observed evidence

Not run.

This comparison does not run an agent, validate CI, or authorize a merge. One seat happens to hide the regression; use two or more to distinguish the cases.

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