Fix blur effect, implement skeleton loading, and add Duolingo JWT friend streak feature

settings.php

@@ -1529,6 +1529,14 @@ function themeoptions_page(){
 
 					</tr>
 
+					<tr>
+						<th><label>Duolingo JWT Token</label></th>
+						<td>
+							<input name="argon_duolingo_jwt" type="text" class="regular-text" value="<?php echo get_option('argon_duolingo_jwt', ''); ?>" placeholder="<?php _e('手动填入抓包得到的 jwt', 'argon');?>">
+							<p class="description"><?php _e('在浏览器登录多邻国网页版后，按 F12 并在 Application -> Cookies 里找到 jwt 并填入，用于自动获取友情连胜数据', 'argon');?></p>
+						</td>
+					</tr>
+
 					<tr><th class="subtitle"><h2 id="section-announcement"><?php _e('博客公告', 'argon');?></h2></th></tr>
 
 					<tr>
@@ -6882,6 +6890,14 @@ function argon_update_themeoptions(){
 
 		argon_update_option('argon_show_duolingo_streak');
 		argon_update_option('argon_duolingo_username');
+		if (isset($_POST['argon_duolingo_jwt'])) {
+			argon_update_option('argon_duolingo_jwt');
+		}
+		delete_option('argon_duolingo_friend_streak');
+		
+		// Clean up old transient and options
+		delete_option('argon_duolingo_email');
+		delete_transient('argon_duo_login_error');
 
 		argon_update_option('argon_banner_title');