[FEATURE/QUESTION] How to enable Workflow tool? CLAUDE_CODE_WORKFLOWS=1 set but tool doesn't surface (GrowthBook gate?)

Summary

The 2.1.147 changelog says:

"Added the Workflow tool for deterministic multi-agent orchestration. It is off by default — set CLAUDE_CODE_WORKFLOWS=1 to enable."

I've set CLAUDE_CODE_WORKFLOWS=1 and confirmed it's in the Claude process env (via ps eww), running v2.1.149 on macOS. The Workflow tool does not appear in the session tool surface. I've also confirmed .claude/workflows/*.workflow.js files are present at session boot.

Investigation

Inspecting the binary, the gate logic is:

function bp() {
  if (!mH(process.env.CLAUDE_CODE_WORKFLOWS)) Dw_ = false;
  else Dw_ = k_("tengu_workflows_enabled", true);
  return Dw_;
}

The env var passes. k_("tengu_workflows_enabled", true) appears to call GrowthBook, and since none of the \Pv()\ bypass triggers are set (no \DISABLE_TELEMETRY\, \CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC\, etc.), GrowthBook is active. The \tengu_workflows_enabled\ flag appears to evaluate to \false\ for my account.

Question

Is this feature currently in a limited beta requiring explicit account enablement? If so, how do I request access? I'm building multi-agent YLO (YouTube Launch Optimizer) workflows and have a realistic use case ready to test immediately (replicating a working bespoke blackboard-conductor pattern as a native workflow for comparison).

Environment

• Claude Code v2.1.149
• macOS (Apple Silicon), Max plan
• \CLAUDE_CODE_WORKFLOWS=1\ confirmed in process env
• \.claude/workflows/hello.workflow.js\ and \title-gen.workflow.js\ present at session boot
• No \DISABLE_TELEMETRY\, \DISABLE_NONESSENTIAL_TRAFFIC\, or \DISABLE_GROWTHBOOK\ set
• \ToolSearch select:Workflow\ returns no match