🎨 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/components/layout/HeaderBar/NotificationButton.jsx

@@ -26,14 +26,15 @@ const NotificationButton = ({ unreadCount, onNoticeOpen, t }) => {
     icon: <Bell size={18} />,
     'aria-label': t('系统公告'),
     onClick: onNoticeOpen,
-    theme: "borderless",
-    type: "tertiary",
-    className: "!p-1.5 !text-current focus:!bg-semi-color-fill-1 dark:focus:!bg-gray-700 !rounded-full !bg-semi-color-fill-0 dark:!bg-semi-color-fill-1 hover:!bg-semi-color-fill-1 dark:hover:!bg-semi-color-fill-2",
+    theme: 'borderless',
+    type: 'tertiary',
+    className:
+      '!p-1.5 !text-current focus:!bg-semi-color-fill-1 dark:focus:!bg-gray-700 !rounded-full !bg-semi-color-fill-0 dark:!bg-semi-color-fill-1 hover:!bg-semi-color-fill-1 dark:hover:!bg-semi-color-fill-2',
   };
 
   if (unreadCount > 0) {
     return (
-      <Badge count={unreadCount} type="danger" overflowCount={99}>
+      <Badge count={unreadCount} type='danger' overflowCount={99}>
         <Button {...buttonProps} />
       </Badge>
     );