Fix auto-scroll on post open - only scroll on new comment (v0.0.90)

- Add justCommentedRef to track when user submits a comment
- Only scroll to comments bottom when user adds new comment
- Don't auto-scroll when modal opens with existing comments

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

package.json

@@ -1,7 +1,7 @@
 {
   "name": "sociowire-frontend",
   "private": true,
-  "version": "0.0.89",
+  "version": "0.0.90",
   "type": "module",
   "scripts": {
     "dev": "vite --host 0.0.0.0",

src/components/Posts/PostDetailModal.jsx

@@ -504,6 +504,7 @@ export default function PostDetailModal({ post, onClose, onPostUpdated, onPostDe
   const [fullscreen, setFullscreen] = useState(false);
 
   const commentsEndRef = useRef(null);
+  const justCommentedRef = useRef(false);
   const postId = post?.id || post?._id;
   const isAuthor = username && (post?.author === username || post?.username === username);
   const postType = useMemo(() => getPostType(post), [post]);
@@ -568,7 +569,13 @@ export default function PostDetailModal({ post, onClose, onPostUpdated, onPostDe
   }, [postId]);
 
   useEffect(() => { refreshComments(true); }, [refreshComments]);
-  useEffect(() => { if (showComments) commentsEndRef.current?.scrollIntoView({ behavior: "smooth" }); }, [comments, showComments]);
+  useEffect(() => {
+    // Only scroll to bottom when user just added a comment, not on initial load
+    if (showComments && justCommentedRef.current) {
+      commentsEndRef.current?.scrollIntoView({ behavior: "smooth" });
+      justCommentedRef.current = false;
+    }
+  }, [comments, showComments]);
 
   // Handlers
   const handleLike = useCallback(async () => {
@@ -602,6 +609,7 @@ export default function PostDetailModal({ post, onClose, onPostUpdated, onPostDe
     setCommentSending(true);
     const tempId = `temp_${Date.now()}`;
     const newComment = { id: tempId, body, username: username || "You", created_at: new Date().toISOString(), _pending: true };
+    justCommentedRef.current = true;
     setComments(prev => [...prev, newComment]);
     setCounts(c => ({ ...c, comments: c.comments + 1 }));
     const res = await createPostComment(postId, body);