Hitting context limits

in Copilot:

```
2025-04-18 01:47:27.965 [warning] Tool 9f1_list_issues failed validation: schema description is too long (truncated to 1024 chars)
```

This is a problem as its the only way to get the LLM to reliably behave.

I'm likely going to experiment with an agent that can be passed as a tool, but its not something we'd be able to offer for free given the upstream costs.