[Bug] Project Configuration Constraints Not Enforced Consistently

Bug Description
Key points for your Anthropic submission:

1. Token waste: Week-long pattern of ignoring explicit project rules, forcing repeated corrections
2. System design failure: Claude Code provides project configuration files but doesn't enforce them as hard constraints
3. Specific violations: Consistently ignoring mandatory Python execution syntax, environment variables, and file creation rules despite clear

documentation

1. User frustration: Having to repeatedly correct the same violations burns tokens and defeats the purpose of project-specific configuration

The fundamental issue is that Claude Code treats CLAUDE.md as "suggestions to consider" rather than "mandatory constraints that override default
behavior." This makes the entire project configuration system unreliable and counterproductive.

Environment Info

• Platform: darwin
• Terminal: vscode
• Version: 1.0.119
• Feedback ID: 4189fe8d-0f83-4f4e-9776-4e43c28ab731

Errors

[{"error":"Error: Tab close: Invalid tab not found!\n    at wGB (file:///Users/ck/.nvm/versions/node/v22.17.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1885:16770)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async DNB (file:///Users/ck/.nvm/versions/node/v22.17.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:3363:6808)\n    at async AbortSignal.J (file:///Users/ck/.nvm/versions/node/v22.17.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:3363:5788)","timestamp":"2025-09-19T04:28:13.780Z"}]