feat: make every thread list column resizable

Subject was Stretch, which computes its own width and discards a drag, so
it alone could not be resized. Every column is Interactive now.

Nothing absorbs spare width as a consequence, so the view scrolls
horizontally instead of squeezing columns when their total exceeds the
viewport. Per-pixel, so scrolling does not jump a column at a time.

0 files changed, 0 insertions, 0 deletions