[BUG] Using custom CLAUDE_CONFIG_DIR prevents CC from connecting to jetbrains plugin

Environment

• Platform (select one):
• [x] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: v1.0.1
• Operating System: e.g. macOS 15.5
• Terminal: intellij

Bug Description

When using the custom config everything appears setup separately but for some reason wont connect to intellij plugin, not specifying the env var works correctly

Steps to Reproduce

1. start CC in intellij with Custom config dir

Expected Behavior

it connects to the intellij plugin

Actual Behavior

it does not unless you use the defaults