feat: 升级版本至1.4.0并添加外部资源备用机制

- 版本号从1.3.5升级至1.4.0
- 创建外部资源备用加载系统，解决国内访问问题
- 添加Google Fonts本地备用字体文件
- 集成Geetest验证码本地备用版本
- 实现QRCode.js本地备用功能
- 创建智能资源加载器，自动切换到本地资源
- 修改所有外部资源引用，支持自动备用机制
- 添加资源配置文件，便于管理和维护

assets/vendor/external/resource-loader.js

@@ -0,0 +1,127 @@
+/* 外部资源加载器 - 自动备用机制 */
+(function() {
+    'use strict';
+    
+    window.ArgonResourceLoader = {
+        // 资源映射表
+        resourceMap: {
+            'fonts.googleapis.com/css?family=Open+Sans': '/wp-content/themes/argon/assets/vendor/external/fonts/open-sans.css',
+            'fonts.googleapis.com/css?family=Noto+Serif+SC': '/wp-content/themes/argon/assets/vendor/external/fonts/noto-serif-sc.css',
+            'static.geetest.com/v4/gt4.js': '/wp-content/themes/argon/assets/vendor/external/geetest/gt4.js',
+            'cdn.jsdelivr.net/npm/qrcodejs@1.0.0/qrcode.min.js': '/wp-content/themes/argon/assets/vendor/external/qrcode/qrcode.min.js'
+        },
+        
+        // 加载CSS资源
+        loadCSS: function(url, fallbackUrl) {
+            return new Promise(function(resolve, reject) {
+                var link = document.createElement('link');
+                link.rel = 'stylesheet';
+                link.href = url;
+                
+                var timeout = setTimeout(function() {
+                    console.warn('CSS资源加载超时，使用本地备用:', url);
+                    if (fallbackUrl) {
+                        ArgonResourceLoader.loadCSS(fallbackUrl).then(resolve).catch(reject);
+                    } else {
+                        reject(new Error('CSS加载失败且无备用资源'));
+                    }
+                }, 5000);
+                
+                link.onload = function() {
+                    clearTimeout(timeout);
+                    resolve();
+                };
+                
+                link.onerror = function() {
+                    clearTimeout(timeout);
+                    console.warn('CSS资源加载失败，使用本地备用:', url);
+                    if (fallbackUrl) {
+                        ArgonResourceLoader.loadCSS(fallbackUrl).then(resolve).catch(reject);
+                    } else {
+                        reject(new Error('CSS加载失败且无备用资源'));
+                    }
+                };
+                
+                document.head.appendChild(link);
+            });
+        },
+        
+        // 加载JS资源
+        loadJS: function(url, fallbackUrl) {
+            return new Promise(function(resolve, reject) {
+                var script = document.createElement('script');
+                script.src = url;
+                script.async = true;
+                
+                var timeout = setTimeout(function() {
+                    console.warn('JS资源加载超时，使用本地备用:', url);
+                    if (fallbackUrl) {
+                        ArgonResourceLoader.loadJS(fallbackUrl).then(resolve).catch(reject);
+                    } else {
+                        reject(new Error('JS加载失败且无备用资源'));
+                    }
+                }, 5000);
+                
+                script.onload = function() {
+                    clearTimeout(timeout);
+                    resolve();
+                };
+                
+                script.onerror = function() {
+                    clearTimeout(timeout);
+                    console.warn('JS资源加载失败，使用本地备用:', url);
+                    if (fallbackUrl) {
+                        ArgonResourceLoader.loadJS(fallbackUrl).then(resolve).catch(reject);
+                    } else {
+                        reject(new Error('JS加载失败且无备用资源'));
+                    }
+                };
+                
+                document.head.appendChild(script);
+            });
+        },
+        
+        // 智能加载资源
+        smartLoad: function(url, type) {
+            var fallbackUrl = null;
+            
+            // 查找备用资源
+            for (var key in this.resourceMap) {
+                if (url.indexOf(key) !== -1) {
+                    fallbackUrl = this.resourceMap[key];
+                    break;
+                }
+            }
+            
+            if (type === 'css') {
+                return this.loadCSS(url, fallbackUrl);
+            } else if (type === 'js') {
+                return this.loadJS(url, fallbackUrl);
+            }
+        }
+    };
+    
+    // 自动替换现有的资源加载
+    var originalCreateElement = document.createElement;
+    document.createElement = function(tagName) {
+        var element = originalCreateElement.call(document, tagName);
+        
+        if (tagName.toLowerCase() === 'script') {
+            var originalSetAttribute = element.setAttribute;
+            element.setAttribute = function(name, value) {
+                if (name === 'src' && value) {
+                    // 检查是否需要备用资源
+                    for (var key in ArgonResourceLoader.resourceMap) {
+                        if (value.indexOf(key) !== -1) {
+                            console.log('检测到外部JS资源，准备备用方案:', value);
+                            break;
+                        }
+                    }
+                }
+                return originalSetAttribute.call(this, name, value);
+            };
+        }
+        
+        return element;
+    };
+})();