Codex gate findings (2 SILENT, both fixed):
- ui.js: incremental prose node now flows through the shared row-decoration
block (data-anchor-scene-row/-row-id/-row-role/-source-event-type) instead of
returning early, so live incremental rows keep the identity attrs the scene
reconciler matches on.
- messages.js: _cancelThrottledSnapshotTimer() + _clearAnchorProseIncrementalNode()
now run on apperror, cancel, _handleStreamError, and _restoreSettledSession
terminal paths (previously only fallback/done/stream_end) — closes the
snapshot-timer/anchor-cache/window-global teardown gap.
- test: extend test_messages_js_stream_perf_cleanup_lifecycle to pin teardown on
all four additional terminal paths.
CORE equivalence (Codex flagged smd != renderMd): reconciled — Opus's 1498-frame
harness against real smd.min.js proves incremental-smd == whole-smd byte-identical;
live-smd-vs-renderMd difference is the already-shipped fidelity model (main live
body streams smd, settles renderMd), and the incremental path is gated on !settled
so settled DOM still comes from renderMd. Not a regression.