♻️ refactor(web): migrate React modules from .js to .jsx and align entrypoint

- Rename React components/pages/utilities that contain JSX to `.jsx` across `web/src`
- Update import paths and re-exports to match new `.jsx` extensions
- Fix Vite entry by switching `web/index.html` from `/src/index.js` to `/src/index.jsx`
- Verified remaining `.js` files are plain JS (hooks/helpers/constants) and do not require JSX
- No runtime behavior changes; extension and reference alignment only

Context: Resolves the Vite pre-transform error caused by the stale `/src/index.js` entry after migrating to `.jsx`.

web/src/components/playground/CodeViewer.jsx

@@ -0,0 +1,332 @@
+/*
+Copyright (C) 2025 QuantumNous
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+For commercial licensing, please contact support@quantumnous.com
+*/
+
+import React, { useState, useMemo, useCallback } from 'react';
+import { Button, Tooltip, Toast } from '@douyinfe/semi-ui';
+import { Copy, ChevronDown, ChevronUp } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
+import { copy } from '../../helpers';
+
+const PERFORMANCE_CONFIG = {
+  MAX_DISPLAY_LENGTH: 50000, // 最大显示字符数
+  PREVIEW_LENGTH: 5000, // 预览长度
+  VERY_LARGE_MULTIPLIER: 2, // 超大内容倍数
+};
+
+const codeThemeStyles = {
+  container: {
+    backgroundColor: '#1e1e1e',
+    color: '#d4d4d4',
+    fontFamily: 'Consolas, "Courier New", Monaco, "SF Mono", monospace',
+    fontSize: '13px',
+    lineHeight: '1.4',
+    borderRadius: '8px',
+    border: '1px solid #3c3c3c',
+    position: 'relative',
+    overflow: 'hidden',
+    boxShadow: '0 2px 8px rgba(0, 0, 0, 0.15)',
+  },
+  content: {
+    height: '100%',
+    overflowY: 'auto',
+    overflowX: 'auto',
+    padding: '16px',
+    margin: 0,
+    whiteSpace: 'pre',
+    wordBreak: 'normal',
+    background: '#1e1e1e',
+  },
+  actionButton: {
+    position: 'absolute',
+    zIndex: 10,
+    backgroundColor: 'rgba(45, 45, 45, 0.9)',
+    border: '1px solid rgba(255, 255, 255, 0.1)',
+    color: '#d4d4d4',
+    borderRadius: '6px',
+    transition: 'all 0.2s ease',
+  },
+  actionButtonHover: {
+    backgroundColor: 'rgba(60, 60, 60, 0.95)',
+    borderColor: 'rgba(255, 255, 255, 0.2)',
+    transform: 'scale(1.05)',
+  },
+  noContent: {
+    display: 'flex',
+    alignItems: 'center',
+    justifyContent: 'center',
+    height: '100%',
+    color: '#666',
+    fontSize: '14px',
+    fontStyle: 'italic',
+    backgroundColor: 'var(--semi-color-fill-0)',
+    borderRadius: '8px',
+  },
+  performanceWarning: {
+    padding: '8px 12px',
+    backgroundColor: 'rgba(255, 193, 7, 0.1)',
+    border: '1px solid rgba(255, 193, 7, 0.3)',
+    borderRadius: '6px',
+    color: '#ffc107',
+    fontSize: '12px',
+    marginBottom: '8px',
+    display: 'flex',
+    alignItems: 'center',
+    gap: '8px',
+  },
+};
+
+const highlightJson = (str) => {
+  return str.replace(
+    /("(\\u[a-zA-Z0-9]{4}|\\[^u]|[^\\"])*"(\s*:)?|\b(true|false|null)\b|-?\d+(?:\.\d*)?(?:[eE][+-]?\d+)?)/g,
+    (match) => {
+      let color = '#b5cea8';
+      if (/^"/.test(match)) {
+        color = /:$/.test(match) ? '#9cdcfe' : '#ce9178';
+      } else if (/true|false|null/.test(match)) {
+        color = '#569cd6';
+      }
+      return `<span style="color: ${color}">${match}</span>`;
+    }
+  );
+};
+
+const isJsonLike = (content, language) => {
+  if (language === 'json') return true;
+  const trimmed = content.trim();
+  return (trimmed.startsWith('{') && trimmed.endsWith('}')) ||
+    (trimmed.startsWith('[') && trimmed.endsWith(']'));
+};
+
+const formatContent = (content) => {
+  if (!content) return '';
+
+  if (typeof content === 'object') {
+    try {
+      return JSON.stringify(content, null, 2);
+    } catch (e) {
+      return String(content);
+    }
+  }
+
+  if (typeof content === 'string') {
+    try {
+      const parsed = JSON.parse(content);
+      return JSON.stringify(parsed, null, 2);
+    } catch (e) {
+      return content;
+    }
+  }
+
+  return String(content);
+};
+
+const CodeViewer = ({ content, title, language = 'json' }) => {
+  const { t } = useTranslation();
+  const [copied, setCopied] = useState(false);
+  const [isHoveringCopy, setIsHoveringCopy] = useState(false);
+  const [isExpanded, setIsExpanded] = useState(false);
+  const [isProcessing, setIsProcessing] = useState(false);
+
+  const formattedContent = useMemo(() => formatContent(content), [content]);
+
+  const contentMetrics = useMemo(() => {
+    const length = formattedContent.length;
+    const isLarge = length > PERFORMANCE_CONFIG.MAX_DISPLAY_LENGTH;
+    const isVeryLarge = length > PERFORMANCE_CONFIG.MAX_DISPLAY_LENGTH * PERFORMANCE_CONFIG.VERY_LARGE_MULTIPLIER;
+    return { length, isLarge, isVeryLarge };
+  }, [formattedContent.length]);
+
+  const displayContent = useMemo(() => {
+    if (!contentMetrics.isLarge || isExpanded) {
+      return formattedContent;
+    }
+    return formattedContent.substring(0, PERFORMANCE_CONFIG.PREVIEW_LENGTH) +
+      '\n\n// ... 内容被截断以提升性能 ...';
+  }, [formattedContent, contentMetrics.isLarge, isExpanded]);
+
+  const highlightedContent = useMemo(() => {
+    if (contentMetrics.isVeryLarge && !isExpanded) {
+      return displayContent;
+    }
+
+    if (isJsonLike(displayContent, language)) {
+      return highlightJson(displayContent);
+    }
+
+    return displayContent;
+  }, [displayContent, language, contentMetrics.isVeryLarge, isExpanded]);
+
+  const handleCopy = useCallback(async () => {
+    try {
+      const textToCopy = typeof content === 'object' && content !== null
+        ? JSON.stringify(content, null, 2)
+        : content;
+
+      const success = await copy(textToCopy);
+      setCopied(true);
+      Toast.success(t('已复制到剪贴板'));
+      setTimeout(() => setCopied(false), 2000);
+
+      if (!success) {
+        throw new Error('Copy operation failed');
+      }
+    } catch (err) {
+      Toast.error(t('复制失败'));
+      console.error('Copy failed:', err);
+    }
+  }, [content, t]);
+
+  const handleToggleExpand = useCallback(() => {
+    if (contentMetrics.isVeryLarge && !isExpanded) {
+      setIsProcessing(true);
+      setTimeout(() => {
+        setIsExpanded(true);
+        setIsProcessing(false);
+      }, 100);
+    } else {
+      setIsExpanded(!isExpanded);
+    }
+  }, [isExpanded, contentMetrics.isVeryLarge]);
+
+  if (!content) {
+    const placeholderText = {
+      preview: t('正在构造请求体预览...'),
+      request: t('暂无请求数据'),
+      response: t('暂无响应数据')
+    }[title] || t('暂无数据');
+
+    return (
+      <div style={codeThemeStyles.noContent}>
+        <span>{placeholderText}</span>
+      </div>
+    );
+  }
+
+  const warningTop = contentMetrics.isLarge ? '52px' : '12px';
+  const contentPadding = contentMetrics.isLarge ? '52px' : '16px';
+
+  return (
+    <div style={codeThemeStyles.container} className="h-full">
+      {/* 性能警告 */}
+      {contentMetrics.isLarge && (
+        <div style={codeThemeStyles.performanceWarning}>
+          <span>⚡</span>
+          <span>
+            {contentMetrics.isVeryLarge
+              ? t('内容较大，已启用性能优化模式')
+              : t('内容较大，部分功能可能受限')}
+          </span>
+        </div>
+      )}
+
+      {/* 复制按钮 */}
+      <div
+        style={{
+          ...codeThemeStyles.actionButton,
+          ...(isHoveringCopy ? codeThemeStyles.actionButtonHover : {}),
+          top: warningTop,
+          right: '12px',
+        }}
+        onMouseEnter={() => setIsHoveringCopy(true)}
+        onMouseLeave={() => setIsHoveringCopy(false)}
+      >
+        <Tooltip content={copied ? t('已复制') : t('复制代码')}>
+          <Button
+            icon={<Copy size={14} />}
+            onClick={handleCopy}
+            size="small"
+            theme="borderless"
+            style={{
+              backgroundColor: 'transparent',
+              border: 'none',
+              color: copied ? '#4ade80' : '#d4d4d4',
+              padding: '6px',
+            }}
+          />
+        </Tooltip>
+      </div>
+
+      {/* 代码内容 */}
+      <div
+        style={{
+          ...codeThemeStyles.content,
+          paddingTop: contentPadding,
+        }}
+        className="model-settings-scroll"
+      >
+        {isProcessing ? (
+          <div style={{
+            display: 'flex',
+            alignItems: 'center',
+            justifyContent: 'center',
+            height: '200px',
+            color: '#888'
+          }}>
+            <div style={{
+              width: '20px',
+              height: '20px',
+              border: '2px solid #444',
+              borderTop: '2px solid #888',
+              borderRadius: '50%',
+              animation: 'spin 1s linear infinite',
+              marginRight: '8px'
+            }} />
+            {t('正在处理大内容...')}
+          </div>
+        ) : (
+          <div dangerouslySetInnerHTML={{ __html: highlightedContent }} />
+        )}
+      </div>
+
+      {/* 展开/收起按钮 */}
+      {contentMetrics.isLarge && !isProcessing && (
+        <div style={{
+          ...codeThemeStyles.actionButton,
+          bottom: '12px',
+          left: '50%',
+          transform: 'translateX(-50%)',
+        }}>
+          <Tooltip content={isExpanded ? t('收起内容') : t('显示完整内容')}>
+            <Button
+              icon={isExpanded ? <ChevronUp size={14} /> : <ChevronDown size={14} />}
+              onClick={handleToggleExpand}
+              size="small"
+              theme="borderless"
+              style={{
+                backgroundColor: 'transparent',
+                border: 'none',
+                color: '#d4d4d4',
+                padding: '6px 12px',
+              }}
+            >
+              {isExpanded ? t('收起') : t('展开')}
+              {!isExpanded && (
+                <span style={{ fontSize: '11px', opacity: 0.7, marginLeft: '4px' }}>
+                  (+{Math.round((contentMetrics.length - PERFORMANCE_CONFIG.PREVIEW_LENGTH) / 1000)}K)
+                </span>
+              )}
+            </Button>
+          </Tooltip>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default CodeViewer;