added edit card and get number

src/hooks/useUpdatePost.js

@@ -0,0 +1,28 @@
+import { useState } from "react";
+import { API_URL } from "../config/constants";
+
+export function useUpdatePost() {
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState("");
+
+  const updateAd = async (id, payload) => {
+    setLoading(true);
+    setError("");
+    try {
+      const res = await fetch(`${API_URL}/api/v1/posts/${id}`, {
+        method: "PUT",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify(payload),
+      });
+      if (!res.ok) throw new Error(`Ошибка ${res.status}`);
+      return await res.json();
+    } catch (err) {
+      setError(err.message || "Не удалось сохранить");
+      return null;
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  return { updateAd, loading, error };
+}