修复按钮不清空筛选的BUG

public/index.html

@@ -292,7 +292,7 @@
                   <line x1="21" y1="21" x2="16.65" y2="16.65"></line>
                 </svg>
               </div>
-              <button id="btnResetSort" class="btn-icon-sm" title="重置排序">
+              <button id="btnResetSort" class="btn-icon-sm" title="重置筛选与排序">
                 <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"
                   stroke-linejoin="round">
                   <path d="M3 12a9 9 0 1 0 9-9 9.75 9.75 0 0 0-6.74 2.74L3 8"></path>

public/js/app.js

@@ -759,6 +759,15 @@
     currentSort = { column: 'up', direction: 'desc' };
     localStorage.removeItem('serverListSort');
 
+    // Clear filters
+    if (dom.serverSearchFilter) {
+      dom.serverSearchFilter.value = '';
+    }
+    if (dom.sourceFilter) {
+      dom.sourceFilter.value = 'all';
+    }
+    currentSourceFilter = 'all';
+
     // Update UI headers
     const headers = document.querySelectorAll('.server-table th.sortable');
     headers.forEach(th => {