Keep chat scroll position stable when stale top snapshots are captured during mobile message updates.
- Capture scroll anchors from the first visible message instead of always sampling the first DOM node
- Ignore stale or likely-invalid zero-position snapshots before attempting scroll restoration
- Guard bottom anchoring from interrupting user scroll unless explicitly forced and add regression coverage for stale snapshot behavior
Files changed:
packages/dashboard/app/components/ChatView.css | 11 +++++-
packages/dashboard/app/components/ChatView.tsx | 33 +++++++++++++----
packages/dashboard/app/components/__tests__/ChatView.scroll-to-top.test.tsx | 41 ++++++++++++++++++++++
3 files changed, 78 insertions(+), 7 deletions(-)
Fusion-Task-Id: FN-5757
Fusion-Task-Lineage: 4e4f6843-ba70-40da-8d16-358bdfcc7b09
Added a scroll-to-top action for the ChatView with per-message scroll behavior, styled to match the mobile design, with comprehensive test coverage for scroll-to-top behavior. Also preserves the mobile copy-action CSS selector.
Fusion-Task-Id: FN-5379
