✨ feat: enhance debug panel with real-time preview and collapsible tabs

- Add real-time request body preview that updates when parameters change
- Implement pre-constructed payload generation for debugging without sending requests
- Add support for image URLs in preview payload construction
- Upgrade debug panel to card-style tabs with custom arrow navigation
- Add collapsible functionality and dropdown menu for tab selection
- Integrate image-enabled messages with proper multimodal content structure
- Refactor tab state management with internal useState and external sync
- Remove redundant status labels and clean up component structure
- Set preview tab as default active tab for better UX
- Maintain backward compatibility with existing debug functionality

This enhancement significantly improves the debugging experience by allowing
developers to see exactly what request will be sent before actually sending it,
with real-time updates as they adjust parameters, models, or image settings.

web/src/components/playground/DebugPanel.js

@@ -1,17 +1,19 @@
-import React from 'react';
+import React, { useState, useEffect } from 'react';
 import {
   Card,
   Typography,
   Tabs,
   TabPane,
   Button,
+  Dropdown,
 } from '@douyinfe/semi-ui';
 import {
   Code,
-  FileText,
   Zap,
   Clock,
   X,
+  Eye,
+  Send,
 } from 'lucide-react';
 import { useTranslation } from 'react-i18next';
 
@@ -24,6 +26,61 @@ const DebugPanel = ({
 }) => {
   const { t } = useTranslation();
 
+  const [activeKey, setActiveKey] = useState(activeDebugTab);
+
+  useEffect(() => {
+    setActiveKey(activeDebugTab);
+  }, [activeDebugTab]);
+
+  const handleTabChange = (key) => {
+    setActiveKey(key);
+    onActiveDebugTabChange(key);
+  };
+
+  const renderArrow = (items, pos, handleArrowClick, defaultNode) => {
+    const style = {
+      width: 32,
+      height: 32,
+      margin: '0 12px',
+      display: 'flex',
+      justifyContent: 'center',
+      alignItems: 'center',
+      borderRadius: '100%',
+      background: 'rgba(var(--semi-grey-1), 1)',
+      color: 'var(--semi-color-text)',
+      cursor: 'pointer',
+    };
+
+    return (
+      <Dropdown
+        render={
+          <Dropdown.Menu>
+            {items.map(item => {
+              return (
+                <Dropdown.Item
+                  key={item.itemKey}
+                  onClick={() => handleTabChange(item.itemKey)}
+                >
+                  {item.tab}
+                </Dropdown.Item>
+              );
+            })}
+          </Dropdown.Menu>
+        }
+      >
+        {pos === 'start' ? (
+          <div style={style} onClick={handleArrowClick}>
+            ←
+          </div>
+        ) : (
+          <div style={style} onClick={handleArrowClick}>
+            →
+          </div>
+        )}
+      </Dropdown>
+    );
+  };
+
   return (
     <Card
       className="!rounded-2xl h-full flex flex-col"
@@ -44,7 +101,6 @@ const DebugPanel = ({
           </Typography.Title>
         </div>
 
-        {/* 移动端关闭按钮 */}
         {styleState.isMobile && onCloseDebugPanel && (
           <Button
             icon={<X size={16} />}
@@ -59,23 +115,46 @@ const DebugPanel = ({
 
       <div className="flex-1 overflow-hidden debug-panel">
         <Tabs
-          type="line"
+          renderArrow={renderArrow}
+          type="card"
+          collapsible
           className="h-full"
           style={{ height: '100%', display: 'flex', flexDirection: 'column' }}
-          activeKey={activeDebugTab}
-          onChange={onActiveDebugTabChange}
+          activeKey={activeKey}
+          onChange={handleTabChange}
         >
           <TabPane tab={
             <div className="flex items-center gap-2">
-              <FileText size={16} />
-              {t('请求体')}
+              <Eye size={16} />
+              {t('预览请求体')}
+            </div>
+          } itemKey="preview">
+            <div className="h-full overflow-y-auto bg-gray-50 rounded-lg p-4 model-settings-scroll">
+              {debugData.previewRequest ? (
+                <pre className="debug-code text-gray-700 whitespace-pre-wrap break-words">
+                  {JSON.stringify(debugData.previewRequest, null, 2)}
+                </pre>
+              ) : (
+                <Typography.Text type="secondary" className="text-sm">
+                  {t('正在构造请求体预览...')}
+                </Typography.Text>
+              )}
+            </div>
+          </TabPane>
+
+          <TabPane tab={
+            <div className="flex items-center gap-2">
+              <Send size={16} />
+              {t('实际请求体')}
             </div>
           } itemKey="request">
             <div className="h-full overflow-y-auto bg-gray-50 rounded-lg p-4 model-settings-scroll">
               {debugData.request ? (
-                <pre className="debug-code text-gray-700 whitespace-pre-wrap break-words">
-                  {JSON.stringify(debugData.request, null, 2)}
-                </pre>
+                <>
+                  <pre className="debug-code text-gray-700 whitespace-pre-wrap break-words">
+                    {JSON.stringify(debugData.request, null, 2)}
+                  </pre>
+                </>
               ) : (
                 <Typography.Text type="secondary" className="text-sm">
                   {t('暂无请求数据')}
@@ -105,14 +184,20 @@ const DebugPanel = ({
         </Tabs>
       </div>
 
-      {debugData.timestamp && (
-        <div className="flex items-center gap-2 mt-4 pt-4 flex-shrink-0">
-          <Clock size={14} className="text-gray-500" />
-          <Typography.Text className="text-xs text-gray-500">
-            {t('最后更新')}: {new Date(debugData.timestamp).toLocaleString()}
-          </Typography.Text>
-        </div>
-      )}
+      <div className="flex items-center justify-between mt-4 pt-4 flex-shrink-0">
+        {(debugData.timestamp || debugData.previewTimestamp) && (
+          <div className="flex items-center gap-2">
+            <Clock size={14} className="text-gray-500" />
+            <Typography.Text className="text-xs text-gray-500">
+              {activeKey === 'preview' && debugData.previewTimestamp
+                ? `${t('预览更新')}: ${new Date(debugData.previewTimestamp).toLocaleString()}`
+                : debugData.timestamp
+                  ? `${t('最后请求')}: ${new Date(debugData.timestamp).toLocaleString()}`
+                  : ''}
+            </Typography.Text>
+          </div>
+        )}
+      </div>
     </Card>
   );
 };