[BUG] Unable to obtain key behind corporate proxy

Environment

• Platform (select one):
• [x ] Anthropic API
• Claude CLI version: 1.0.15 (Claude Code)
• Operating System: Ubuntu 22.04.2 LTS
• Terminal: iTerm 2

Bug Description

When behind a corporate proxy the Anthropic Console login flow fails to obtain a key. If i set a key manually using apiKeyHelper and echo a key back then everything works as expected behind the proxy.
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Steps to Reproduce

1. https_proxy=http://trusted-egress-proxy.service:8080 ./claude
2. Open browser challenge manually
3. Paste resulting key

Expected Behavior

Obtain Key

Actual Behavior

OAuth error: Failed to create API key: The socket connection was closed unexpectedly. For more information, pass verbose: true in the second argument to fetch()

Additional Context

My guess is one of the network calls is missing setting the proxy