[BUG] Slash commands crash extension when Bash permission granted (regression or incomplete fix for #6625)

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?

Issue #6625 marked resolved, but slash command permission problems persist and have escalated to extension crashes.

Environment:

• Platform: Windows
• Extension: VSCode Claude Code
• Slash command: /align (reads global CLAUDE.md via Bash)

Severity: High - renders slash commands unusable, requires session restart

What Should Happen?

Expected behavior:

• Explicit tool approvals in slash command should prevent prompts (#6625)
• OR if prompting anyway, granting permission should allow execution
• Extension should never crash/hang

Actual behavior:

• Explicit approvals ignored ✗
• Permission grant causes complete extension failure ✗
• No error message, just silent hang ✗

Error Messages/Logs

Steps to Reproduce

Bug chain:

1. Slash command includes explicit tool approvals in frontmatter
2. Extension ignores explicit approvals, prompts for Bash permission anyway
3. User grants permission via dropdown
4. Extension crashes/hangs completely
5. Session dropdown shows slash command name frozen (e.g., "/align")
6. No recovery - requires session termination (5+ minutes wait confirmed unresponsive)

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.0.36 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

Related issues:

• #6625 (marked resolved but symptoms persist)
• #3662 (permission prompts missing)
• #4144 (bash permissions not working in slash commands)