feat(usage): add support for access token and user ID in usage scripts

Add optional accessToken and userId fields to usage query scripts,
enabling queries to authenticated endpoints like /api/user/self.

Changes:
- Add accessToken and userId fields to UsageScript type (frontend & backend)
- Extend script engine to support {{accessToken}} and {{userId}} placeholders
- Update NewAPI preset template to use /api/user/self endpoint
- Add UI inputs for access token and user ID in UsageScriptModal
- Pass new parameters through service layer to script executor

This allows users to query usage data from endpoints that require
login credentials, providing more accurate balance information for
services like NewAPI/OneAPI platforms.

src/components/UsageScriptModal.tsx

@@ -47,37 +47,28 @@ const PRESET_TEMPLATES: Record<string, string> = {
 
   NewAPI: `({
   request: {
-    url: "{{baseUrl}}/api/usage/token",
+    url: "{{baseUrl}}/api/user/self",
     method: "GET",
     headers: {
-      Authorization: "Bearer {{apiKey}}",
+      "Content-Type": "application/json",
+      "Authorization": "Bearer {{accessToken}}",
+      "New-Api-User": "{{userId}}"
     },
   },
   extractor: function (response) {
-    if (response.code) {
-      if (response.data.unlimited_quota) {
-        return {
-          planName: response.data.name,
-          total: -1,
-          used: response.data.total_used / 500000,
-          unit: "USD",
-        };
-      }
+    if (response.success && response.data) {
       return {
-        isValid: true,
-        planName: response.data.name,
-        total: response.data.total_granted / 500000,
-        used: response.data.total_used / 500000,
-        remaining: response.data.total_available / 500000,
+        planName: response.data.group || "默认套餐",
+        remaining: response.data.quota / 500000,
+        used: response.data.used_quota / 500000,
+        total: (response.data.quota + response.data.used_quota) / 500000,
         unit: "USD",
       };
     }
-    if (response.error) {
-      return {
-        isValid: false,
-        invalidMessage: response.error.message,
-      };
-    }
+    return {
+      isValid: false,
+      invalidMessage: response.message || "查询失败"
+    };
   },
 })`,
 };
@@ -275,6 +266,43 @@ const UsageScriptModal: React.FC<UsageScriptModalProps> = ({
                 </label>
               </div>
 
+              {/* 高级配置：Access Token 和 User ID */}
+              <div className="space-y-3 p-4 bg-gray-50 dark:bg-gray-800/50 rounded-lg">
+                <p className="text-sm font-medium text-gray-700 dark:text-gray-300">
+                  🔑 高级配置（可选，用于需要登录的接口）
+                </p>
+
+                <label className="block">
+                  <span className="text-xs text-gray-600 dark:text-gray-400">
+                    Access Token（访问令牌）
+                  </span>
+                  <input
+                    type="text"
+                    value={script.accessToken || ''}
+                    onChange={(e) => setScript({...script, accessToken: e.target.value})}
+                    placeholder="从浏览器开发者工具获取..."
+                    className="mt-1 w-full px-3 py-2 border border-border-default dark:border-border-default rounded bg-white dark:bg-gray-800 text-gray-900 dark:text-gray-100 text-sm"
+                  />
+                </label>
+
+                <label className="block">
+                  <span className="text-xs text-gray-600 dark:text-gray-400">
+                    User ID（用户标识）
+                  </span>
+                  <input
+                    type="text"
+                    value={script.userId || ''}
+                    onChange={(e) => setScript({...script, userId: e.target.value})}
+                    placeholder="例如：240"
+                    className="mt-1 w-full px-3 py-2 border border-border-default dark:border-border-default rounded bg-white dark:bg-gray-800 text-gray-900 dark:text-gray-100 text-sm"
+                  />
+                </label>
+
+                <p className="text-xs text-gray-500 dark:text-gray-400">
+                  💡 在脚本中使用：{`{{accessToken}}`} 和 {`{{userId}}`}
+                </p>
+              </div>
+
               {/* 脚本说明 */}
               <div className="p-4 bg-blue-50 dark:bg-blue-900/20 rounded-lg text-sm text-gray-700 dark:text-gray-300">
                 <h4 className="font-medium mb-2">