- Stop a two-finger pinch-out from also opening the history: the board wrapper arms its
open/close pull only while a single pointer is down (a 2nd finger is a pinch, owned by Board).
- Widen the edge-swipe-back activation band to the left half of the viewport (was 20%).
- Align a chat nudge by sender like a bubble — your own to the right, the opponent's to the
left (only the alignment changes).
- Kill the iOS rubber-band inside the history drawer (overscroll-behavior: none).
e2e: a two-finger pinch does not open the history; a back-swipe from the left half navigates back.
Replace the very-narrow 24px edge-swipe trigger with a left band of ~20% of the
viewport width (EDGE_FRACTION) so the back-swipe is easy to reach, keeping the
simple instant-navigate behaviour (the route slide plays the animation). A
hit-test keeps the wider band clear of the rack, a draggable pending tile, a
zoomed-in board and text inputs, so it never hijacks those drags.
Test: e2e (Chromium+WebKit) — the band swipe returns to the lobby; a swipe
starting on the rack does not navigate.
Ilia Denisov