Review (SWE-2 Max): a non-standby error re-sending the theatre surround
could end a healthy still, and a non-RuntimeError during DestroyOverlay
skipped VR_ShutdownInternal. drain() now drops a surround that fails for
other reasons, and close() shuts down in finally. Fake overlay handles no
longer depend on call order.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>