[BUG] TeamCreate/TeamDelete/SendMessage tools not available despite agent teams being enabled

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report
• [x] I am using the latest version of Claude Code

Bug Description

Agent Teams tools (TeamCreate, TeamDelete, SendMessage) are not available in the tool set despite the experimental flag being enabled. Claude falls back to using the regular Agent tool (subagents) instead.

Environment

• Claude Code version: 2.1.76
• OS: Ubuntu 24.04.3 LTS on WSL2 (kernel 6.6.87.2-microsoft-standard-WSL2)
• Terminal: bash (not VS Code integrated terminal)
• tmux: installed (v3.4)
• Plan: Max 5x
• Model: Claude Opus 4.6

Configuration

CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS is set to "1" in ~/.claude/settings.json.

Steps to Reproduce

1. Enable agent teams: set "CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS": "1" in settings.json
2. Start a Claude Code session
3. Ask Claude to create an agent team with specialized roles to investigate a topic
4. Observe that Claude uses the regular Agent tool instead of TeamCreate

Expected Behavior

TeamCreate, TeamDelete, and SendMessage tools should be available in Claude's tool set, allowing it to spawn and coordinate agent teams.

Actual Behavior

Only the Agent tool (standard subagents) is available. Claude does not recognize TeamCreate as an available tool and defaults to launching regular subagents instead. No error message is shown — the team tools are simply absent from the available tool set.

Additional Context

• Not confirmed whether this is WSL2-specific (not tested on native Linux or macOS)
• tmux is properly installed and functional
• Related issue: #32723 (TeamCreate availability documentation)