Default agent keeps spinnig up subagents with expensive models, eating all th...

Default agent keeps spinnig up subagents with expensive models, eating all the credits in minutes.

Adding copilot-instructions.md won't prevent it.

I don't see any setting to turn this off, either.

---
| Field | Value |
| --- | --- |
| App version | 1.1.12 |
| OS | Windows 10.0.26100 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Week 9 |

Reproduce the behavior in the /chat path on app version 1.1.12 using the reported Windows environment, and inspect whether copilot-instructions.md affects subagent creation. Clarify the intended control for disabling automatic expensive-model subagents; done means the default agent no longer starts them unexpectedly or provides a usable setting to prevent it.

索引モデルが issue の本文から書いたものです。