[BUG] Windows: Plugin marketplace path breaks when username contains spaces/accents (VS Code task context)

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

When Claude Code is launched as a VS Code task on Windows, the plugin marketplace fails to load because the path separator \ before .claude is dropped from the user profile path.

Expected path:

C:\Users\Francisco Durán\.claude\plugins\marketplaces\...

Actual path generated:

C:\Users\Francisco Durán.claude\plugins\marketplaces\...

Note the missing \ between Durán and .claude.

Key finding: works in terminal, fails in VS Code task

• Opening Claude Code as an interactive terminal → marketplace loads correctly, plugins work
• Opening Claude Code as a VS Code task (via tasks.json) → marketplace path is broken, plugins fail

Both use the exact same command: claude --channels plugin:telegram@claude-plugins-official

Error output

First /plugin call returns empty:

❯ /plugin
  ⎿  (no content)

Second /plugin call shows the error:

Failed to load marketplace "claude-plugins-official" from source (github): 
Failed to finalize marketplace cache. Please manually delete the directory at 
C:\Users\Francisco Durán.claude\plugins\marketplaces\claude-plugins-official if it exists and try again.

Technical details: EACCES: permission denied, rm 
'C:\Users\Francisco Durán.claude\plugins\marketplaces\claude-plugins-official'

Also seen as:

EBUSY: resource busy or locked, rename 
'C:\Users\Francisco Durán.claude\plugins\marketplaces\anthropics-claude-plugins-official' 
-> 'C:\Users\Francisco Durán.claude\plugins\marketplaces\claude-plugins-official'

Impact

• Plugin skills (e.g., telegram:configure, telegram:access) show as "Unknown skill"
• Channel listener loads correctly ("Listening for channel messages from: plugin:telegram@claude-plugins-official")
• The /plugin command fails, preventing plugin management

Workaround attempted

• Setting HOME and USERPROFILE explicitly in task env → did not help
• Deleting marketplace cache before launch → helps temporarily but regenerates on next /plugin call
• Upgrading from v2.1.90 to v2.1.91 → did not fix the issue

What Should Happen?

The plugin marketplace should load correctly regardless of whether Claude Code is launched from an interactive terminal or a VS Code task. The path to ~/.claude/plugins/marketplaces/ should be correctly resolved even when the Windows username contains spaces and/or accented characters (e.g., "Francisco Durán").

Error Messages/Logs

Steps to Reproduce

1. On Windows 11, have a user account with spaces and accented characters in the name (e.g., "Francisco Durán")
2. Install Claude Code v2.1.91
3. Install the telegram plugin: /install-plugin telegram@claude-plugins-official
4. Create a VS Code task in .vscode/tasks.json:

{
  "label": "Bot",
  "type": "shell",
  "command": "claude --channels plugin:telegram@claude-plugins-official",
  "isBackground": true,
  "problemMatcher": []
}

1. Run the task from VS Code
2. In the Claude Code session, type /plugin
3. Observe the error with the malformed path (missing \ before .claude)

Compare: Open Claude Code as an interactive terminal in the same directory and run /plugin — it works correctly.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.91

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_