[BUG] claude.ai Remote MCP servers not syncing to Claude Code 2.1.29

Describe the bug

claude.ai MCP servers (Slack, Wiki, Homeassistant) were available in Claude Code 2.1.22 but disappeared after updating to 2.1.29.

To Reproduce

1. Configure MCP integrations on claude.ai (Settings → Integrations)
2. Verify MCPs are connected and working on claude.ai ✔
3. Start Claude Code version 2.1.29
4. Run /mcp command
5. Observe: Only local project MCPs are shown, not the claude.ai remote MCPs

Expected behavior

Remote MCP servers from claude.ai should be synchronized and available in Claude Code, as they were in version 2.1.22.

Actual behavior

• Before (2.1.22): Remote MCPs from claude.ai were visible and usable in Claude Code
• After (2.1.29): Remote MCPs disappeared completely, only local project MCPs shown
• /mcp debug shows no additional information
• Logout/Login does not restore the remote MCPs

Environment

• Claude Code Version: 2.1.29
• Previous working version: 2.1.22
• Login method: Claude Max Account
• MCP servers on claude.ai: ✔ Connected (Slack, Wiki, Homeassistant)
• MCP servers in Claude Code: ❌ Not shown
• Platform: macOS (Darwin 24.6.0)

Additional context

• The issue started immediately after upgrading from 2.1.22 to 2.1.29
• Local project MCPs (configured in .mcp.json) work correctly
• Remote MCPs are still visible and working on claude.ai web interface
• No error messages in debug mode

Screenshots

/mcp output shows only:

Project MCPs (/path/to/.mcp.json)
❯ outline · △ needs authentication

Remote MCPs (Slack, Wiki, Homeassistant) are missing.

Suggested fix

The synchronization mechanism between claude.ai and Claude Code for remote MCP servers appears to be broken in 2.1.29.