extensions disabled in acp sessions

[minrk]

Describe the bug

When launching biorouter acp, it appears that extensions are disabled and cannot be enabled. It is unclear if this is intentional.

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To Reproduce
Steps to reproduce the behavior:

1. install extensions (even just the default extension-manager extension)
2. launch biorouter acp from an acp-consuming client
3. attempt to use or list available extensions/tools
4. extensions are unavailable

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Expected behavior

enabled extensions are available in acp sessions

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Please provide the following information

• OS & Arch: ubuntu 24.04
• Interface: biorouter acp
• Version: v1.87.1
• Extensions enabled: extension manager, jupyter-server-mcp
• Provider & Model: NRP - Qwen3, gemma

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Additional context

Jupyter AI invokes things via ACP, so this is the interface we will use the most.