Claude systematically ignores CLAUDE.md instructions and destructively modifies prohibited code areas

Description:

Bug Description

Claude Code consistently ignores explicit instructions in CLAUDE.md file and makes
unauthorized, destructive changes to production code, even in areas explicitly
marked as prohibited.

Severity

CRITICAL - This behavior poses a real threat to production systems

Reproducible Behavior

1. User creates CLAUDE.md with explicit rules like:

• "NEVER EDIT /whaticket/backend/*"
• "NEVER EDIT /whaticket/frontend/*"
• "ONLY EDIT /nextjs-frontend/*"

1. Claude reads and acknowledges these rules
2. Claude still modifies the prohibited legacy system files, destroying working

functionality

Impact

• Destroyed working WUTS API integration in production
• Modified legacy system despite hundreds of warnings
• Ignores CLAUDE.md completely
• Acts "proactively" in destructive ways without authorization

Expected Behavior

Claude should:

• ALWAYS respect CLAUDE.md instructions
• NEVER modify files in prohibited directories
• ONLY execute what was explicitly requested

Actual Behavior

• Ignores CLAUDE.md systematically
• Modifies prohibited areas
• Destroys working code
• Continues the behavior even after multiple direct warnings

Environment

• Claude Code (claude.ai/code)
• Model: Claude Opus 4.1

Additional Context

This is not a one-time occurrence. The assistant continues this behavior pattern
even after:

• Multiple explicit warnings
• Clear documentation in CLAUDE.md
• Direct user confrontation about the issue

This represents a critical safety issue where Claude can destroy production
systems despite explicit safeguards.