fixed start page and scroll in modal window

src/hooks/useFeedActions.jsx

@@ -1,5 +1,5 @@
 // src/hooks/useFeedActions.js
-import { useState, useCallback } from "react";
+import { useState, useCallback, useRef } from "react";
 import { useDeletePost } from "./useDeletePost";
 import { useFavorites } from "./useFavorites";
 import { usePostStatus } from "./usePostStatus";
@@ -22,12 +22,18 @@ import { usePostStatus } from "./usePostStatus";
  * @param {Function} onAuthRequired — вызывается когда нужна авторизация
  * @param {boolean} isAuthenticated
  */
-export function useFeedActions({ refresh, loadMyPosts, onAuthRequired, isAuthenticated, t }) {
+export function useFeedActions({ refresh, loadMyPosts, onAuthRequired, isAuthenticated, t, setLiked, setLikeCountAdj }) {
   const { deletePost } = useDeletePost();
   const { toggleFavorite } = useFavorites();
   const { markAsFound } = usePostStatus();
 
   const [error, setError] = useState("");
+  const likedRef = useRef(new Set());
+
+  const syncLikedRef = useCallback((prev) => {
+    likedRef.current = prev instanceof Set ? prev : new Set(prev);
+    return prev;
+  }, []);
 
   const afterMutation = useCallback(() => {
     refresh();
@@ -39,13 +45,35 @@ export function useFeedActions({ refresh, loadMyPosts, onAuthRequired, isAuthent
       onAuthRequired();
       return;
     }
-    const result = await toggleFavorite(id);
-    if (result.success) {
-      afterMutation();
-    } else {
-      setError(result.error);
+    if (setLiked) {
+      const wasCurrentlyLiked = likedRef.current.has(id);
+      const delta = wasCurrentlyLiked ? -1 : 1;
+
+      setLiked(prev => {
+        const next = new Set(prev);
+        if (next.has(id)) next.delete(id); else next.add(id);
+        likedRef.current = next;
+        return next;
+      });
+      if (setLikeCountAdj) {
+        setLikeCountAdj(prev => ({ ...prev, [id]: (prev[id] || 0) + delta }));
+      }
+
+      const result = await toggleFavorite(id);
+      if (!result.success) {
+        setLiked(prev => {
+          const next = new Set(prev);
+          if (next.has(id)) next.delete(id); else next.add(id);
+          likedRef.current = next;
+          return next;
+        });
+        if (setLikeCountAdj) {
+          setLikeCountAdj(prev => ({ ...prev, [id]: (prev[id] || 0) - delta }));
+        }
+        setError(result.error);
+      }
     }
-  }, [isAuthenticated, onAuthRequired, toggleFavorite, afterMutation]);
+  }, [isAuthenticated, onAuthRequired, toggleFavorite, setLiked, setLikeCountAdj]);
 
   const handleDelete = useCallback(async (postId) => {
     if (!window.confirm(t('feed.confirmDelete'))) return;
@@ -75,6 +103,7 @@ export function useFeedActions({ refresh, loadMyPosts, onAuthRequired, isAuthent
     handleMarkFound,
     handleNewAd: afterMutation,
     handleEditSave: afterMutation,
+    syncLiked: syncLikedRef,
     error,
     clearError,
   };