Metadata correction for 2026.acl-long.1984

### JSON data block

```json
{
"anthology_id": "2026.acl-long.1984",
"authors": [
{
"first": "Yaowenqi",
"last": "Liu",
"id": "yaowenqi-liu/unverified"
},
{
"first": "Bingxu",
"last": "Meng",
"id": "bingxu-meng/unverified"
},
{
"first": "Rui",
"last": "Pan",
"id": "rui-pan"
},
{
"first": "Yuxing",
"last": "Liu",
"id": "yuxing-liu/unverified"
},
{
"first": "Jerry",
"last": "Huang",
"id": "jerry-huang"
},
{
"first": "Jiaxuan",
"last": "You",
"id": "jiaxuan-you"
},
{
"first": "Tong",
"last": "Zhang",
"id": "tong-zhang"
}
],
"authors_old": "Yaowenqi Liu | BingXu Meng | Rui Pan | Yuxing Liu | Jerry Huang | Jiaxuan You | Tong Zhang",
"authors_new": "Yaowenqi Liu | Bingxu Meng | Rui Pan | Yuxing Liu | Jerry Huang | Jiaxuan You | Tong Zhang"
}
```

The issue provides the exact anthology ID and old/new author spellings for `2026.acl-long.1984`. Start by locating that metadata entry in the repository’s anthology data for this ID, then update the author string to match `authors_new`. Confirm the record now shows `Bingxu` (and no other unexpected field changes). If the same ID appears in an index or companion metadata file, verify it reflects the same corrected spelling.

由索引模型根据 Issue 内容生成。