## Why
Enterprise-managed MCP authentication requires the thread's admitted connection. Bulk `mcpServerStatus/list` requests need to use that connection to report the enterprise server's catalog consistently with single-server requests.
## What changed
- Read enterprise server metadata from the thread runtime when listing all MCP servers, preserving ordinary server discovery.
- Check the expected server registration before discovery so edited or disabled registrations cannot reuse an old connection's catalog.
## Testing
Add coverage for bulk and single-server status consistency, catalog metadata, and registration changes. Extend enterprise authentication lifecycle tests to cover bearer renewal, grant replacement, and logout during a pending exchange. Add a scenario asserting that enterprise sign-in failure preserves ordinary MCP tool schemas, calls, and model history.
GitOrigin-RevId: 3bf3bd672511d0c753cd95ec777892f72bd6eb89
jif
61fa059d49