Connected MCP connectors not loading in new Code sessions

Description

All MCP connectors (Linear, Slack, Google Calendar, Intercom, PostHog) show as connected in Settings → Connectors, but new Code sessions only receive GitHub. ToolSearch returns no matches for any non-GitHub connector even after 60+ seconds of retries.

Steps to reproduce

1. Connect multiple MCP connectors via Settings → Connectors
2. Verify they appear as connected
3. Open a new session
4. Run ToolSearch for any non-GitHub connector
5. All return "No matching deferred tools found" after 60s of retries

Expected

All connected connectors available in every new session.

Actual

Only GitHub loads. Sessions inherited from a parent conversation work fine.

Environment

Claude Code Desktop, macOS Apple Silicon