feat: update notice after a server update, keep the open tab on reload, chunked Whisper in Quick Dump, compact emoji picker

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

frontend/src/components/EmojiIconButton.tsx

@@ -4,7 +4,7 @@ import { EmojiPickerModal } from '../features/workspace/EmojiPickerModal';
 interface EmojiIconButtonProps {
   value: string;
   onChange: (emoji: string) => void;
-  // Default icon; removing the icon in the picker goes back to it
+  // Shown while no icon is chosen
   fallback: string;
 }
 
@@ -29,8 +29,9 @@ export const EmojiIconButton: React.FC<EmojiIconButtonProps> = ({ value, onChang
         <EmojiPickerModal
           currentIcon={value}
           anchor={anchor}
+          allowRemove={false}
           onSelectEmoji={(emoji) => {
-            onChange(emoji || fallback);
+            onChange(emoji);
             setAnchor(null);
           }}
           onClose={() => setAnchor(null)}