rivetkit/agent-os fails on Bun: No such built-in module: node:sqlite

Calling `agentOs()` on Bun fails with a missing `node:sqlite` module error.

## Steps to reproduce

```ts
import { agentOs } from "rivetkit/agent-os";

const vm = agentOs({});
```

```bash
bun index.ts
```

## Expected

No error

## Observed

```
error: No such built-in module: node:sqlite
```

## Environment

- rivetkit 2.2.1
- Bun 1.3.12