Architecture — Stage 3: Add the Scoreboard

Current Structure

box-runner/
├── .git/
├── index.html
└── style.css

No new files. The index.html grew by four lines and style.css grew by one rule.

Git History

Three commits in a straight line. Every new stage from here on will add exactly one node on top of this chain until you start branching in Stage 4.

What Changed

The project gained its first reusable component pattern — a container <div> with a class name, plus a matching CSS rule. Nothing is reused yet, but the pattern is in place.