In the changes/diff view, an unwrapped diff's intrinsic width leaked up the
flex chain: the flex-1 column holding the scroll area lacked min-width:0, so its
min-content (the widest line) stretched it — and every nested w-full element,
including the .pierre-diff-wrapper (overflow-x-auto) and the file header — grew
to the content width. That pushed the header's action controls past the narrow
viewport and left overflow-x-auto with nothing to scroll.
Add min-w-0 to the diff layout's flex items so the chain stays at viewport
width: long lines now scroll horizontally inside the diff, and the file header
controls stay visible.
Bohdan Triapitsyn
e4cfb628fe