Auto mode unavailable on Pro plan despite valid claude.ai OAuth session

Describe the bug

Auto mode shows "auto mode is unavailable for your plan" despite being on a Pro plan authenticated via claude.ai OAuth. The same account works fine on another device with the same credentials.

Steps to reproduce

1. Previously had ANTHROPIC_API_KEY set in the environment on this machine, then manually removed it
2. Logged in via claude login with a claude.ai Pro account
3. Auto mode shows as unavailable in the bottom bar

Expected behavior

Auto mode should be available on Pro plan with claude.ai OAuth authentication.

Actual behavior

Bottom bar shows: auto mode is unavailable for your plan

Troubleshooting already tried

• Logged out and back in multiple times (claude logout / claude login)
• Verified ANTHROPIC_API_KEY is not set in the environment
• Cleared ~/.claude/cache/ and ~/.claude/stats-cache.json
• claude auth status output confirms correct account and plan:
• authMethod: "claude.ai"
• apiProvider: "firstParty"
• subscriptionType: "pro"
• Same account works on another device with automode enabled

Environment

• Claude Code version: 2.1.87
• OS: macOS Darwin 25.4.0
• Shell: zsh
• Auth method: claude.ai OAuth
• Plan: Pro
• Note: This machine previously had ANTHROPIC_API_KEY set in the environment; it was manually removed before switching to OAuth login