- Lock the gesture into a reply swipe once it starts clearly
horizontal (1.6 dominance, 12pt) and relax the ratio to 1.05
afterwards, so a slightly diagonal finish no longer cancels the
swipe while vertical scrolls stay untouched.
- Restyle the composer reply banner as a rounded telegram-like card
with the reply header, close button and two-line quote preview.
- Cover the lock/follow behaviour in MessageReplySwipeTests.
- Raise the swipe dominance threshold to 2.0 and add a 24pt
activation distance so diagonal timeline scrolls never move bubbles
or fire haptics, and snap the indicator back when a gesture turns
vertical mid-drag.
- Cover the stricter thresholds in MessageReplySwipeTests.