fix(gif-mood): prevent SSE refresh from wiping in-progress note edits

Track textarea focus state and skip note sync from server while focused.
Fixes concurrent edit race condition where router.refresh() triggered by
another participant's SSE event would overwrite the current user's draft.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/gif-mood/GifMoodCard.tsx

@@ -26,6 +26,7 @@ export const GifMoodCard = memo(function GifMoodCard({
   const [itemVersion, setItemVersion] = useState(item);
   const [isPending, startTransition] = useTransition();
   const [imgError, setImgError] = useState(false);
+  const [isFocused, setIsFocused] = useState(false);
   const textareaRef = useRef<HTMLTextAreaElement>(null);
 
   useEffect(() => {
@@ -35,10 +36,13 @@ export const GifMoodCard = memo(function GifMoodCard({
     el.style.height = el.scrollHeight + 'px';
   }, [note]);
 
+  // Sync from server only when not focused — prevents SSE refresh from wiping in-progress edits
   if (itemVersion !== item) {
     setItemVersion(item);
+    if (!isFocused) {
       setNote(item.note || '');
     }
+  }
 
   const isOwner = item.userId === currentUserId;
   const canEditThis = canEdit && isOwner;
@@ -103,7 +107,8 @@ export const GifMoodCard = memo(function GifMoodCard({
             ref={textareaRef}
             value={note}
             onChange={(e) => setNote(e.target.value)}
-            onBlur={handleNoteBlur}
+            onFocus={() => setIsFocused(true)}
+            onBlur={() => { setIsFocused(false); handleNoteBlur(); }}
             placeholder="Ajouter une note…"
             rows={1}
             className="w-full text-foreground/70 bg-transparent resize-none outline-none placeholder:text-muted/40 leading-snug text-center overflow-hidden"