Cannot submit prompts with rev227

Today the snap refreshed to revision 227 and it stopped working.

I reverted to revision 217 that was installed before that, which is still working, excluding potential permission problems (even though it didn't change).

I am able to select a model from the providers I am using (openrouter and ollama), but submitting a prompt fails immediately showing on screen:
```
Failed to send prompt
Unexpected server error. Check server logs for details.
```

I ran it with `opencode --print-logs --log-level DEBUG` and captured stderr, which is attached here.

[opencode.log](https://github.com/user-attachments/files/32064299/opencode.log)

The [upstream binary for v1.18.30](https://github.com/anomalyco/opencode/releases/download/v1.18.30/opencode-linux-x64.tar.gz) (the version packaged in rev227) works, so the issue appears to lie in the snap packaging itself.