- Add standalone-only safe-area padding for the composer (bottom floor +
fullscreen top inset) and top toast offset; env() reports 0 on iOS 26
standalone so a fixed floor is required
- Pin the mobile shell to 100lvh: WebKit leaves 100dvh stuck at the
keyboard-shrunk value after dismissal
- Clamp visual-viewport pinning to documentElement.clientHeight to guard
against stale visualViewport metrics
- Defer the composer blur flip (120ms) so taps on composer controls
survive the keyboard-resize reflow; transition the bottom padding so
the late flip reads as a slide, not a dip
- Restore the keyboard after mobile overlays close: MobileOverlayPanel
dispatches synchronous open/close events, ChatInput refocuses within
the same gesture, holds focus through iOS's tap-settle dismissal,
guards the pill collapse via DOM focus, and reveals the composer form
above the keyboard (programmatic focus skips iOS's native reveal)
Bohdan Triapitsyn
24c40b4930