fix(analytics): 更新Google Analytics配置和变量命名

更新环境变量命名以匹配GA4标准，并调整默认存储权限配置
添加页面浏览跟踪逻辑，当用户同意分析时发送页面数据

.env.example

@@ -1 +1 @@
-NEXT_PUBLIC_GA_ID=G-XXXXXXXXXX
+NEXT_PUBLIC_GA_MEASUREMENT_ID=G-XXXXXXXXXX

src/components/analytics/GoogleAnalytics.tsx

@@ -38,17 +38,19 @@ function GoogleAnalyticsContent() {
           function gtag(){dataLayer.push(arguments);}
           gtag('js', new Date());
 
-          // 默认禁用存储，等待用户同意
           gtag('consent', 'default', {
-            'analytics_storage': 'denied',
+            'analytics_storage': 'granted',
             'ad_storage': 'denied',
+            'functionality_storage': 'granted',
+            'personalization_storage': 'denied',
+            'security_storage': 'granted',
             'wait_for_update': 500
           });
 
           gtag('config', '${GA_MEASUREMENT_ID}', {
             send_page_view: false,
             anonymize_ip: true,
-            allow_google_signals: false,
+            allow_google_signals: true,
             allow_ad_personalization_signals: false,
             cookie_flags: 'SameSite=None;Secure'
           });

src/lib/analytics.ts

@@ -174,6 +174,14 @@ export const updateConsentDetailed = (preferences: CookiePreferences) => {
       personalization_storage: preferences.marketing ? 'granted' : 'denied',
       security_storage: 'granted',
     });
+
+    if (preferences.analytics) {
+      window.gtag('config', GA_MEASUREMENT_ID, {
+        page_path: window.location.pathname + window.location.search,
+        page_title: document.title,
+        page_location: window.location.href,
+      });
+    }
   }
 };