Synchronize alternate screen restoration test - #150
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myobie
marked this pull request as ready for review
July 31, 2026 19:17
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What changed
The alternate-screen restoration test now waits until its client has observed the pre-alt main-buffer line before input allows the shell to enter and leave the alternate screen.
Why
The first timing fix correctly waited for post-exit state, but the shell could still enter alternate screen before the client observed the main-buffer setup. PR #128's exact hosted run demonstrated that residual startup race: the post-exit marker was visible while the pre-alt line was absent.
Production behavior is unchanged; this is a test-only synchronization correction.
Validation