feat: add stock movement on backend

frontend/src/api/index.js

@@ -64,3 +64,5 @@ export const updateOrderStatus = (id, data) =>
   axios.patch(`${API_URL}/admin/orders/${id}`, data);
 export const registerAdmin = (data) =>
   axios.post(`${API_URL}/admin/register`, data);
+
+export const stockIn = (data) => axios.post(`${API_URL}/admin/stock/in`, data)

frontend/src/pages/ItemPage.jsx

@@ -64,7 +64,7 @@ export default function ItemPage() {
       <main className="px-6 md:px-16 grow w-full mb-10 text-white">
         <div className="flex flex-col md:flex-row gap-8 md:gap-12 mt-6">
           {/* ЛЕВО — фото */}
-          <div className="md:w-1/2">
+          <div className="md:w-1/4">
             <img
               src={item.avatar_url}
               alt={item.name}
@@ -73,7 +73,7 @@ export default function ItemPage() {
           </div>
 
           {/* ПРАВО — всё инфо в одной колонке */}
-          <div className="md:w-1/2 flex flex-col">
+          <div className="md:w-3/4 flex flex-col">
             <h1 className="text-2xl md:text-4xl font-medium uppercase mb-3">
               {item.name}
             </h1>