fix: fix knowledge upload white screen

src/pages/AgentEditor/components/capability/KnowledgeSettingsPanel.tsx

@@ -47,10 +47,10 @@ export default function KnowledgeSettingsPanel({
             <div className="px-1">
               <div className="flex justify-between items-center mb-4">
                 <span className="text-xs text-gray-500">上传文档以增强 AI 知识</span>
-                <input
+                <Input
                   type="file"
                   multiple
-                  style={{ display: 'none' }}
+                  className="agent-editor-file-input"
                   id="knowledge-upload"
                   onChange={async (event) => {
                     const files = event.target.files;
@@ -58,7 +58,6 @@ export default function KnowledgeSettingsPanel({
                     for (let index = 0; index < files.length; index++) {
                       await beforeUploadKnowledge(files[index]);
                     }
-                    event.target.value = '';
                   }}
                 />
                 <Button