Architecture — Stage 6: Merge the Branch

Current Structure

box-runner/
├── .git/
├── index.html
└── style.css    (dark theme now — same on both branches)

No new files. style.css on main has been updated to the dark version via the merge.

Git History

Both branch labels now point at Commit 4. The history is still a straight line because the merge was a fast-forward.

What Changed

The merge did not create a new commit. It simply moved the main label from Commit 3 to Commit 4. This is the simplest kind of merge — no merge commit, no conflicts, no drama.