Correctness fixes found by max-effort review of the branch diff:
- frame-writer.sync() now updates lastFrame alongside log-update's
previousOutput. Previously the two dedup layers desynced after a sync()
(the clearTerminal path), silently dropping a legitimately-changed frame
and emitting an empty BSU/ESU pair. Adds a regression test.
- scheduler: the queuePostFlushCb callback now bails if scheduled was reset
by cancel(), so a stale callback can't commit on a torn-down tree or
re-arm an uncancellable trailing timer.
- scheduler.flush() now collects multiple concurrent waiters instead of
overwriting a single resolver — fixes a hang when two waitUntilRenderFlush()
calls await the same pending commit.
- render teardown nulls mountedClear so a post-unmount app.clear() can't
write to a torn-down stream.
- test-streams getContentWrites imports bsu/esu instead of hardcoding the
escape literals.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Yunfei He
7d03a110e1