After v0.6.1's light-theme removal exposed it more visibly, rapid resizes
left stale glyphs in the right column (sidebar fragments, mid-character
title truncation, duplicated transcript timestamps). Three small fixes:
- Coalesce queued `Event::Resize` events, run a single `terminal.clear()`,
and immediately draw the new frame instead of waiting for the next event
loop iteration. Previously the cleared screen could sit blank between
the resize handler's `continue` and the next draw, so any other event
arriving in that window would be processed before the repaint.
- `truncate_line_to_width` for budgets `<= 3` was counting codepoints
instead of display widths, overrunning the cell budget for any
double-width grapheme. Fix by accumulating display widths consistently.
- Add a `tracing::debug!` log to the resize handler so users hitting this
in the wild can confirm whether crossterm is delivering the event.
Adds two regression tests in `tui/widgets` (resize cycle + cache
invalidation on width change) and one in `tui/ui` (truncate semantics).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Hunter Bown
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