- ChatView mobile: hide the top sidebar header's "New Chat" button on
<=768px and show the existing footer button as a pinned full-width
action with safe-area padding. Both buttons existed in JSX; only
CSS was needed.
- styles.css: comments compose/edit textareas use var(--surface) so
they remain visible against the task detail modal's --card panel
(in light theme --bg and --card both resolve to #ffffff).
- Includes resolved-conflict changes from fusion/fn-2469 in
ModelOnboardingModal and SettingsModal (and the related test).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>