* fix(view): reapply column highlights after paste and buffer edits
Problem: Column extmarks (icon color, per-character permissions) are
applied via `util.set_highlights` only during `render_buffer`. Neovim
does not duplicate extmarks on yank/paste, so lines inserted via `yyp`
or `p` render without any column highlights.
Solution: Store `col_width` and `col_align` in `session[bufnr]` after
each render. Add `M.reapply_highlights` which re-parses all buffer
lines, reconstructs the column chunk table, and re-applies extmarks via
`util.set_highlights`. Wire it to a `TextChanged` autocmd (guarded by
`_rendering[bufnr]` to skip oil's own `nvim_buf_set_lines` calls).
* fix(view): resolve LuaLS warnings in `reapply_highlights`
d8ff76685a