♻️ 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/pages/Chat2Link/index.jsx

@@ -0,0 +1,45 @@
+/*
+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 { useTokenKeys } from '../../hooks/chat/useTokenKeys';
+
+const chat2page = () => {
+  const { keys, chatLink, serverAddress, isLoading } = useTokenKeys();
+
+  const comLink = (key) => {
+    if (!chatLink || !serverAddress || !key) return '';
+    return `${chatLink}/#/?settings={"key":"sk-${key}","url":"${encodeURIComponent(serverAddress)}"}`;
+  };
+
+  if (keys.length > 0) {
+    const redirectLink = comLink(keys[0]);
+    if (redirectLink) {
+      window.location.href = redirectLink;
+    }
+  }
+
+  return (
+    <div className="mt-[60px] px-2">
+      <h3>正在加载，请稍候...</h3>
+    </div>
+  );
+};
+
+export default chat2page;