Tags wrapped past pane edge when detail split narrowed the list.
Truncation used fixed constants that didn't account for real tag width.
Now measures everything-except-body and gives body exactly what remains.
ID cluttered rows and caused wrapping on long entries. Body newlines
leaked into stream rendering extra unindented lines. Cursor glyph
shifted selected rows 1 col right of unselected.
Remove ID from all row renderers (detail pane already shows it),
collapse multiline body to first line, cap tags to 2 in stream,
and reserve cursor column on unselected rows for consistent alignment.
lerko