fix: send mcp-protocol-version header in worktree registration test

Required for follow-up requests by the 2025-06-18 MCP HTTP transport
that effect beta.103 enforces.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
cb86f66640Julius Marminge committed on 8/29/2026, 6:02:09 AMparente5079cd
1 file changedLine totals unavailable