Trang Do | Oct2025-1 | Tools | Sprint 4 | Implement shell tools python

[trngdothuy]

✅ Self-Checklist

• I have committed my files one by one, on purpose, and for a reason
• I have titled my PR based on the guideline
• I have tested my changes
• My changes follow the style guide
• My changes meet the requirements of this task from the Backlog

🔄 Changelist

I completed cow.py implementation

❓ Questions

Thank you for reviewing my PR. Please help me check them and suggest to me.

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