- Enable submit when at least 1 item is answered (not all required)
- Dynamic label: "Send 2 of 6 Responses" vs "Send All Responses"
- Done cards are clickable to reopen for editing
- Collapsible preview shows formatted message before sending
- Resizable via left-edge grip handle, width persists to localStorage
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
