The test used src.find() which locates the first occurrence of
'Keep Pairs:' in the comment block (line 5113 in src/gui_2.py), not
the actual code (line 5130). The 200-char snippet window only reaches
the comment, so the assertions for set_next_item_width(140) and
drag_int fail.
Production code is already correct (set_next_item_width(140) +
drag_int) at src/gui_2.py:5130-5131 (user commit d0b06575). This
test just needs to use rfind() to locate the actual code, not the
comment.
Change: src.find(marker) -> src.rfind(marker)
1 test passes (was 1 pre-existing failure).