[Bug] Crash on subagent start: Box component nesting error in Ink renderer

Bug Description

Crash on subagent start: <Box> can't be nested inside <Text> component thrown from createInstance in Ink renderer. Reproducible 100% when team subagent (spawned via Agent tool with team_name) connects via claude --agent-id ... --agent-name ... --team-name ... --agent-type developer --model sonnet. Version 2.1.118, macOS Darwin 25.3.0. Stack: createInstance (cli.js:496:249) → jS → E$H → WRH → nFH → lFH → Rp → tH → NH → oH.

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.1.118
• Feedback ID: a5e928c9-75fd-45b7-9ad4-250f1f706dec

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/{user}/.local/share/claude/versions/2.1.118 (expected in multi-process scenarios)\n    at ai_ (/$bunfs/root/src/entrypoints/cli.js:2756:2177)\n    at IK8 (/$bunfs/root/src/entrypoints/cli.js:2756:1257)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-23T05:54:52.057Z"}]