Move tool output into a live sheet with group navigation and full-content copying. Keep lightweight grouped summaries inline, add agent process pages, and preserve transcript reading position.\n\nAdd real transcript and sheet regression coverage with localized summaries.
Add viewport-driven paging with layout acknowledgements, bounded retries, cancellation gates, and epoch-safe history retention.
Preserve transcript anchors and expansion state, fix tool-group identity collisions, and serialize Android history coordination on Main.
Reduce per-scroll composition and layout work; add native regression tests, CI coverage, and profiling guidance.
weishu