[BUG] OAuth port 54545 conflicts with macOS mobileactivationd and unable to change ports

Environment

• Platform (select one):
• [X] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.34 (Claude Code)
• Operating System: macOS 15.3.1
• Terminal: MacOS default Terminal

Bug Description

When I run Claude from the terminal, it takes me through the setup and when I once I've selected a login method, it tells me that the port 54545 is already in use.

The process that's using that port is a Mac process so I'm unable to change the port that uses and there is no port configuration that I can find for claude.

So I'm unable to use claude at all.

Steps to Reproduce

Step 1 - Dark Mode
Step 2 - Select Login Method - I select "Claude account with subscription"

Expected Behavior

Explained above

Actual Behavior

Prevented from using claude due to a port conflict.

Additional Context

I ran "lsof -i :54545" and it reports that "mobileactivationd" is occupying the port.