MRBS 1.12.2 等保2.0二级整改完整提交

包含：登录失败锁定、90天密码有效期、30分钟会话超时、
强制改密、登录审计日志、屏幕水印、企业背景图、
备案信息固定底部、favicon、JS空集合保护、
会话过期体验优化（403 JSON）、display_errors 关闭、
固定 key 根治 Integrity check failed 等全部改动

注意：config.inc.php/.htaccess/.user.ini 含敏感信息，
通过 .gitignore 排除，勿推送到公开仓库。

lib/Monolog/Handler/Curl/Util.php

@@ -0,0 +1,71 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of the Monolog package.
+ *
+ * (c) Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Monolog\Handler\Curl;
+
+use CurlHandle;
+
+/**
+ * This class is marked as internal and it is not under the BC promise of the package.
+ *
+ * @internal
+ */
+final class Util
+{
+    /** @var array<int> */
+    private static $retriableErrorCodes = [
+        CURLE_COULDNT_RESOLVE_HOST,
+        CURLE_COULDNT_CONNECT,
+        CURLE_HTTP_NOT_FOUND,
+        CURLE_READ_ERROR,
+        CURLE_OPERATION_TIMEOUTED,
+        CURLE_HTTP_POST_ERROR,
+        CURLE_SSL_CONNECT_ERROR,
+    ];
+
+    /**
+     * Executes a CURL request with optional retries and exception on failure
+     *
+     * @param  resource|CurlHandle $ch             curl handler
+     * @param  int                 $retries
+     * @param  bool                $closeAfterDone
+     * @return bool|string         @see curl_exec
+     */
+    public static function execute($ch, int $retries = 5, bool $closeAfterDone = true)
+    {
+        while ($retries--) {
+            $curlResponse = curl_exec($ch);
+            if ($curlResponse === false) {
+                $curlErrno = curl_errno($ch);
+
+                if (false === in_array($curlErrno, self::$retriableErrorCodes, true) || !$retries) {
+                    $curlError = curl_error($ch);
+
+                    if ($closeAfterDone) {
+                        curl_close($ch);
+                    }
+
+                    throw new \RuntimeException(sprintf('Curl error (code %d): %s', $curlErrno, $curlError));
+                }
+
+                continue;
+            }
+
+            if ($closeAfterDone) {
+                curl_close($ch);
+            }
+
+            return $curlResponse;
+        }
+
+        return false;
+    }
+}