[BUG] Cowork: Adding Chat Project context adds empty "Projects" entry instead of showing project selection popup

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

When inside an existing Cowork project and attempting to add a Claude.ai Chat Project as context, no selection popup appears. Instead, an empty "Projects" entry is added to the context panel with no content.
A popup or modal should appear allowing the user to select which Chat Project to connect as context.

Actual behavior: Clicking "Add Chat Project context" immediately adds an empty "Projects" entry to the context list with no content and no way to select a specific project.

What Should Happen?

A popup or modal should appear allowing the user to select which Chat Project to connect as context.

Error Messages/Logs

Steps to Reproduce

1. Open Cowork and navigate to an existing Cowork project
2. Open the context panel
3. Click "Add context" → select "Chat Project"
4. Expected: A popup appears listing available Claude.ai Chat Projects to choose from
5. Actual: No popup appears — an empty "Projects" entry is added directly to the context panel

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude 1.1.8629 (befdfc) 2026-03-24T22:13:01.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Non-interactive/CI environment

Additional Information

_No response_