[Bug]: Workspace identity becomes ambiguous when opening a new terminal or agent in a specific project

### Operating system

macOS

### Orca version

_No response_

### Details

Short summary:
Orca shows a “Workspace identity is ambiguous across hosts” error when adding a new terminal or agent in a specific project.

What happened?

In one specific project, creating a new terminal or starting a new agent from the workspace triggers the following error:

> Workspace identity is ambiguous across hosts. Refresh projects and try again.

Refreshing the projects does not reliably resolve the issue, and I am unable to add the new terminal or agent normally.

How can we reproduce it?

1. Open the affected project in Orca.
2. Enter the project workspace.
3. Add a new terminal or start a new agent.
4. The error banner appears.

Anything else that might help:

* The issue appears to affect only one specific project.
* It happens with both new terminals and new agents.
* Refreshing the project list does not consistently fix the issue.
* Screenshot attached.
* Expected behavior: The new terminal or agent should open normally in the current workspace.