- Workspace: on mobile renders only panes[activePaneIdx] (rest skipped).
When panes.length > 1, adds a horizontal pane-navigator strip built
from SwipeablePaneTab above the active pane. URL state ?pane=<paneId>
written by switchActivePane (user-initiated only) and read on URL
change (back-button + deep-link). Bare URL resets activePaneIdx to 0.
- useLongPress: 500ms touchstart timer; on fire, dispatches a synthetic
contextmenu event on target.closest('[data-tab-id]') so the existing
Radix ContextMenuTrigger opens at the touch coordinates. Suppresses
the synthetic click that follows touchend. Cancels on touchmove /
touchend / touchcancel.
- ChatTabBar: each tab gets data-tab-id, touch handlers wired to
useLongPress, and WebkitTouchCallout: 'none' to disable iOS Safari's
text-selection callout.
- SwipeablePaneTab: tracks horizontal drag; bails if vertical delta
exceeds 30px (so vertical scroll still works); past 60px on release
fires onClose (removePane), else snaps back. Opacity fades 1->0.4
approaching the threshold. Hand-rolled per spec.
- Pane drag-and-drop disabled on mobile (HTML5 drag is broken on touch
anyway; mobile uses the navigator + swipe-to-close instead).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>