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Tyler Slaton
f9eee688be
`CopilotChatView` rendered the attachment queue + input as flex siblings
beneath the scroll area, so long messages hit the input's flat top edge
and were sliced mid-line. Most visible in pin-to-send mode where the user
reads at their own pace. The previously-shipped feather gradient masked
this but clashed with host themes whose `--background` didn't match its
hard-coded white/near-black (b621e96ee defaulted it to an empty div).
Wrap attachments + input in a single absolute-positioned overlay so the
scroll content fills full height and passes behind the rounded pill. Pad
scroll-content bottom by the measured overlay height so the last line
clears the pill. Welcome-screen input is unchanged (stays inline). The
`feather` slot remains — hosts who want a themed fade supply their own
gradient.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>