fix: 更新外部资源引用路径并修复配置密码

将Font Awesome从CDN引用改为本地路径
修复数据库和SMTP的密码配置

app.php

@@ -135,7 +135,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['rating'])) {
     <!-- Bootstrap CSS -->
     <link href="css/bootstrap.min.css" rel="stylesheet">
     <!-- Font Awesome -->
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
+    <link rel="stylesheet" href="/css/all.min.css">
     <!-- SweetAlert2 -->
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/sweetalert2@11/dist/sweetalert2.min.css">
     <script src="https://cdn.jsdelivr.net/npm/sweetalert2@11/dist/sweetalert2.all.min.js"></script>