🎨 chore(web): apply ESLint and Prettier auto-fixes (baseline)

- Ran: bun run eslint:fix && bun run lint:fix
- Inserted AGPL license header via eslint-plugin-header
- Enforced no-multiple-empty-lines and other lint rules
- Formatted code using Prettier v3 (@so1ve/prettier-config)
- No functional changes; formatting-only baseline across JS/JSX files

web/src/pages/Setting/Chat/SettingsChats.jsx

@@ -18,13 +18,7 @@ For commercial licensing, please contact support@quantumnous.com
 */
 
 import React, { useEffect, useState, useRef } from 'react';
-import {
-  Banner,
-  Button,
-  Form,
-  Space,
-  Spin,
-} from '@douyinfe/semi-ui';
+import { Banner, Button, Form, Space, Spin } from '@douyinfe/semi-ui';
 import {
   compareObjects,
   API,