Bug/fix windows npm utf8 issues

[jj-github-jj]

📝 Description

Fixes windows os related error messages on windows resulting from utf-8 issues and not finding the npm on windows system After these updates, run_system.py works in windows 11

Fixes #(issue number)

🎯 Type of Change

• [X ] 🐛 Bug fix (non-breaking change which fixes an issue)
• [ ] ✨ New feature (non-breaking change which adds functionality)
• [ ] 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] 📚 Documentation update
• [ ] 🧪 Test improvements
• [ ] 🔧 Code refactoring
• [ ] 🎨 UI/UX improvements

🧪 Testing

Test Environment

• [ ] Tested with Docker deployment
• [ ] Tested with direct Python deployment
• [ ] Tested on macOS
• [ ] Tested on Linux
• [ ] Tested on Windows

Test Cases

• [ ] All existing tests pass
• [ ] New tests added for new functionality
• [ ] Manual testing completed
• [ ] System health check passes

# Commands used for testing
python system_health_check.py
python run_system.py --health
# Add any specific test commands here

📋 Checklist

Code Quality

• [ ] Code follows the project's coding standards
• [ ] Self-review of the code completed
• [X ] Code is properly commented
• [ ] Type hints added (Python)
• [ ] No console.log statements left in production code

Documentation

• [ ] Documentation updated (if applicable)
• [ ] API documentation updated (if applicable)
• [ ] README updated (if applicable)
• [ ] CONTRIBUTING.md guidelines followed

Dependencies

• [ ] No new dependencies added, or new dependencies are justified
• [ ] requirements.txt updated (if applicable)
• [ ] package.json updated (if applicable)

🖥️ Screenshots (if applicable)

Add screenshots to help reviewers understand the changes.

📊 Performance Impact

Describe any performance implications:

• [ ] No performance impact
• [ ] Performance improved
• [ ] Performance may be affected (explain below)

🔄 Migration Notes

If this is a breaking change, describe what users need to do:

• [ ] No migration needed
• [ ] Migration steps documented below

📎 Additional Notes

Any additional information that reviewers should know.