[BUG] config set not working (as expected) on windows with native installer

Environment

• Platform (select one):
• [ ] Anthropic API
• [x] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.67 (Claude Code)

• Operating System: Windows 11 24H2
• Terminal: Windows Terminal 1.22.11141.0 (cmd.exe with clink)

Bug Description

setting the configuration requires non native escape sequences

Steps to Reproduce

1. start cmd.exe
2. install claude following the native (beta) instructions https://docs.anthropic.com/en/docs/claude-code/setup#native-binary-installation-beta
3. attempt to configure AWS bedrock

e.g for the JSON string {"CLAUDE_CODE_USE_BEDROCK" : "true" , "AWS_PROFILE" : "cloudbees-bedrock-claude-infra-bedrock-viewer" } note that we need to pass this as a single string and we need to escape the double quotes.
as this is windows you can escape a double quote with ^ or by using 2 double quotes "" (additionally we need to quote the string

Expected Behavior

• claude config set --global env "{""CLAUDE_CODE_USE_BEDROCK"": ""true"", ""AWS_PROFILE"": ""cloudbees-bedrock-claude-infra-bedrock-viewer"" }" works

Actual Behavior

> claude config set --global env "{""CLAUDE_CODE_USE_BEDROCK"": ""true"", ""AWS_PROFILE"": ""cloudbees-bedrock-claude-infra-bedrock-viewer"" }"
Error: Failed to parse JSON for 'env': JSON Parse error: Unterminated string

❯ claude config set --global env "{^"CLAUDE_CODE_USE_BEDROCK^": ^"true^", ^"AWS_PROFILE^": ^"cloudbees-bedrock-claude-infra-bedrock-viewer^" }"
Error: Failed to parse JSON for 'env': JSON Parse error: Unrecognized token '^'

Additional Context

<!-- Add any other context about the problem here, such as screenshots, logs, etc. -->

After a lot of frustration I tried falling back to a non native escape of using \
❯ claude config set --global env "{\"CLAUDE_CODE_USE_BEDROCK\": \"true\", \"AWS_PROFILE\": \"cloudbees-bedrock-claude-infra-bedrock-viewer\" }
This works but is unexpected.