[Bug] Team leader approval gate missing permission_response in SendMessage union types

Bug Description
Team-leader-approval gate fires for spawned team agents but team-lead
has no permission_response API to answer it; SendMessage's union types
are shutdown_response and plan_approval_response only. Either bypass
the gate when team-lead is itself a Claude with bypassPermissions, or
ship a permission_response shape.

Environment Info

• Platform: darwin
• Terminal: tmux
• Version: 2.1.123
• Feedback ID: 5f34e52e-d979-4f08-8527-303dd780d61d

Errors

[{"error":"Error: Failed to fetch version from https://downloads.claude.ai/claude-code-releases/latest: ECONNREFUSED\n    at Sj5 (/$bunfs/root/src/entrypoints/cli.js:2767:5533)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-30T20:23:30.485Z"},{"error":"Error: Failed to fetch version from https://downloads.claude.ai/claude-code-releases/latest: ECONNREFUSED\n    at Sj5 (/$bunfs/root/src/entrypoints/cli.js:2767:5533)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-30T20:23:30.485Z"}]