The poll-based event loop (rustix::event::poll with 200ms timeout) broke
terminal size detection on Redox. When tui.size() returned (0,0) via
unwrap_or_default() after a failed dup(1,"winsize"), the size-change
check would clear the screen and render nothing.
Ratatui's draw() already calls autoresize() on every frame, which queries
backend.size() and resizes buffers automatically. The manual size check
and poll-based wake-up were redundant and harmful.
Reverted to the original blocking-read approach that worked on Redox:
stdin.lock().events_and_raw().next() → process key → render()
Resize is detected on the next keypress via ratatui's built-in autoresize.
vasilito
4edc3ddd5b