[BUG] shell colors from Bash commands sometimes not reset correctly

Environment

• Platform (select one):
• [ ] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [X] Other: Claude Code
• Claude CLI version: 1.0.89
• Operating System: Arch Linux
• Terminal: kitty; also vterm in emacs

Bug Description

Bash command ls -la doesn't clean up its colors well when the directories have colors due to permissions:

<img width="646" height="210" alt="Image" src="https://github.com/user-attachments/assets/4b5cba11-f5ae-4484-81bf-017e49da0823" />

Steps to Reproduce

1. Have a parent directory with drwxrwxrwt permissions
2. Get Claude Code to do ls -la

Expected Behavior

The directory .. is colored and then that's it.

Actual Behavior

<img width="646" height="210" alt="Image" src="https://github.com/user-attachments/assets/362e150a-5165-478b-a8ea-b71b24bbfe7b" />