nagayon-935 / mping / 23639645647

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github

fix(ui): stop refresh goroutine when app exits to prevent terminal corruption

The refresh goroutine only exited when doneCh fired (count limit reached),
so after the user pressed 'q', the goroutine kept calling QueueUpdateDraw
on the stopped application after tcell had already called screen.Fini().
This caused the terminal to be left in a corrupted state.

Add appStop channel that is closed after app.Run() returns, giving the
goroutine a clean exit path regardless of how the app was stopped.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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