- ChatInput: e.nativeEvent.isComposing early-return added (CJK IME
safety — first Enter of a composition no longer submits). Bare-Enter
send path gated by !isMobile so mobile inserts a newline; send is
button-only. Cmd/Ctrl+Enter and Shift+Cmd/Ctrl+Enter retained as
desktop secondary bindings. Placeholder is now viewport-aware. Outer
wrapper gets paddingBottom: env(safe-area-inset-bottom) so iOS home
indicator doesn't overlap.
- MessageBubble: ActionRow buttons (Copy / Regenerate / Fork / Trash)
bumped to max-md min-h/min-w 44px; opacity-100 on mobile so actions
don't hide behind a hover-to-reveal pattern. User bubble and
assistant content wrapper gain break-words + min-w-0 so long
unbreakable strings (URLs / paths) wrap rather than blowing out
the column on narrow viewports.
- ChatPane: queued-message dropdown + close X + Stop-generating button
hit max-md 44px sizing.
- ChatTabBar: per-tab X, +/History/Close-pane action buttons hit
max-md 44px. Tab close X is force-visible on mobile (no
hover-to-reveal).
- M8: CodeBlock / Markdown tables / ToolCallCard already wrap
overflow-x-auto pre-existing — no source change needed there; the
break-words + min-w-0 additions above are the new defensive layer.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>