feat: show the file position lualine was missing

[jiminu]

options.lua turns ruler off and hands the cursor position to lualine,
but only half of it was restored.

:h 'ruler' describes what the built-in display covered:

Show the line and column number of the cursor position, separated by a
comma. When there is room, the relative position of the displayed text
in the file is shown on the far right:
Top / Bot / All / 45%

lualine splits those two halves across separate components:

-- location.lua
return string.format('%3d:%-2d', line, col)

-- progress.lua
if cur == 1 then return 'Top'
elseif cur == total then return 'Bot'
else return string.format('%2d%%%%', math.floor(cur / total * 100)) end

lualine_x carried "location" only, so the relative position was lost
when ruler was disabled. This adds "progress" next to it.

The two do not overlap: location is the absolute position, progress
the position within the file — the information the line number alone says
least about in a long file. ruler stays off, so nothing is displayed
twice.

No test accompanies this. The existing appearance assertions in
editor_workflow.lua each guard a constraint — no dependency on
nvim-web-devicons, glyphs that work without a Nerd Font, no dependency on
a personally installed fd. A statusline component has no such
constraint behind it, so an assertion would only restate the
configuration and would break on any future reordering of the section.

bash tests/neovim_config_test.bash — 11 passed.

🤖 Generated with Claude Code

https://claude.ai/code/session_01PGC35LZyrDE74wuQeNQ3oT