3 maintainer-review items the contributor hadn't addressed:
1. (blocking) restored .session-list overflow-anchor:none — the PR accidentally reverted the deliberate Firefox sidebar fix (2dfe765b); only the on-topic .messages removal is kept.
2/3. _settleFinalScroll was dead code + the promised 2s static-content safety timeout was missing — wired _settleFinalScroll(token) via a single 2s top-level fallback after _settleRO.observe(el), declared _settleFinalTimer + cleared it in _cancelBottomSettle and at settle re-entry.
f9055c5d97
