Game of life live demo on railway app returns 'Not Found'

https://github.com/AnswerDotAI/fasthtml-example/blob/bb24bc44453641c36f415ca89c1881570a9b616a/00_game_of_life/readme.md?plain=1#L16

https://game-of-life-production-ed7f.up.railway.app/

returns

```
Not Found

The train has not arrived at the station.

Please check your [network settings](https://docs.railway.com/guides/public-networking#railway-provided-domain) to confirm that your domain has provisioned.

If you are a visitor, please let the owner know you're stuck at the station.

Request ID:
BxND-XGkShaBr6_rMqEudw_3176973899
```

从 00_game_of_life/readme.md 中第 16 行附近的链接 readme 开始，并打开 Railway 部署 URL，以确认报告的响应。追踪此演示的部署方式，并确定必须修正哪些内容，才能让在线的 Game of Life 页面加载，而不是 Railway 的 Not Found 页面。

由索引模型根据 Issue 内容生成。