Respect user scroll intent across wheel, pointer, and touch

- track wheel-up, pointer drag, and touch gestures before disabling auto-tail
- avoid false auto-scroll handoff caused by content height changes
- add pointer/touch handlers to message list for consistent scroll behavior
3031dfd122Julius Marminge committed on 2/20/2026, 12:17:58 AMparent0cb4e75
1 file changedLine totals unavailable