fix: 批量修复功能问题 - 购物车结算/订单库存积分/搜索/抽奖/个人资料等

frontend/src/layouts/SupplierLayout.vue

@@ -35,6 +35,7 @@
           </div>
           <template #dropdown>
             <el-dropdown-menu>
+              <el-dropdown-item command="profile">个人中心</el-dropdown-item>
               <el-dropdown-item command="home">返回前台</el-dropdown-item>
               <el-dropdown-item divided command="logout">退出登录</el-dropdown-item>
             </el-dropdown-menu>
@@ -94,6 +95,7 @@ const currentPageTitle = computed(() => {
 
 function handleCommand(command: string) {
   switch (command) {
+    case 'profile': router.push('/profile'); break
     case 'home': router.push('/'); break
     case 'logout': userStore.logout(); cartStore.clearCart(); router.push('/login'); break
   }

frontend/src/layouts/UserLayout.vue

@@ -153,7 +153,7 @@ function handleCommand(command: string) {
 
 function handleSearch() {
   if (searchQuery.value.trim()) {
-    router.push({ path: '/products', query: { search: searchQuery.value } })
+    router.push({ path: '/products', query: { keyword: searchQuery.value } })
   }
 }