♻️ 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/layout/HeaderBar/SkeletonWrapper.jsx

@@ -0,0 +1,154 @@
+/*
+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 from 'react';
+import { Skeleton } from '@douyinfe/semi-ui';
+
+const SkeletonWrapper = ({
+  loading = false,
+  type = 'text',
+  count = 1,
+  width = 60,
+  height = 16,
+  isMobile = false,
+  className = '',
+  children,
+  ...props
+}) => {
+  if (!loading) {
+    return children;
+  }
+
+  // 导航链接骨架屏
+  const renderNavigationSkeleton = () => {
+    const skeletonLinkClasses = isMobile
+      ? 'flex items-center gap-1 p-1 w-full rounded-md'
+      : 'flex items-center gap-1 p-2 rounded-md';
+
+    return Array(count)
+      .fill(null)
+      .map((_, index) => (
+        <div key={index} className={skeletonLinkClasses}>
+          <Skeleton
+            loading={true}
+            active
+            placeholder={
+              <Skeleton.Title
+                active
+                style={{ width: isMobile ? 40 : width, height }}
+              />
+            }
+          />
+        </div>
+      ));
+  };
+
+  // 用户区域骨架屏 (头像 + 文本)
+  const renderUserAreaSkeleton = () => {
+    return (
+      <div className={`flex items-center p-1 rounded-full bg-semi-color-fill-0 dark:bg-semi-color-fill-1 ${className}`}>
+        <Skeleton
+          loading={true}
+          active
+          placeholder={<Skeleton.Avatar active size="extra-small" className="shadow-sm" />}
+        />
+        <div className="ml-1.5 mr-1">
+          <Skeleton
+            loading={true}
+            active
+            placeholder={
+              <Skeleton.Title
+                active
+                style={{ width: isMobile ? 15 : width, height: 12 }}
+              />
+            }
+          />
+        </div>
+      </div>
+    );
+  };
+
+  // Logo图片骨架屏
+  const renderImageSkeleton = () => {
+    return (
+      <Skeleton
+        loading={true}
+        active
+        placeholder={
+          <Skeleton.Image
+            active
+            className={`absolute inset-0 !rounded-full ${className}`}
+            style={{ width: '100%', height: '100%' }}
+          />
+        }
+      />
+    );
+  };
+
+  // 系统名称骨架屏
+  const renderTitleSkeleton = () => {
+    return (
+      <Skeleton
+        loading={true}
+        active
+        placeholder={
+          <Skeleton.Title
+            active
+            style={{ width, height: 24 }}
+          />
+        }
+      />
+    );
+  };
+
+  // 通用文本骨架屏
+  const renderTextSkeleton = () => {
+    return (
+      <div className={className}>
+        <Skeleton
+          loading={true}
+          active
+          placeholder={
+            <Skeleton.Title
+              active
+              style={{ width, height }}
+            />
+          }
+        />
+      </div>
+    );
+  };
+
+  // 根据类型渲染不同的骨架屏
+  switch (type) {
+    case 'navigation':
+      return renderNavigationSkeleton();
+    case 'userArea':
+      return renderUserAreaSkeleton();
+    case 'image':
+      return renderImageSkeleton();
+    case 'title':
+      return renderTitleSkeleton();
+    case 'text':
+    default:
+      return renderTextSkeleton();
+  }
+};
+
+export default SkeletonWrapper;