🎨 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/Chat2Link/index.jsx

@@ -36,7 +36,7 @@ const chat2page = () => {
   }
 
   return (
-    <div className="mt-[60px] px-2">
+    <div className='mt-[60px] px-2'>
       <h3>正在加载，请稍候...</h3>
     </div>
   );