🧹 Clean up temporary shell scripts from troubleshooting

Remove scripts that were created during workflow fixes and dependency cleanup:
- validate_ci.sh
- validate_workflow.sh
- validate_workflow_enhanced.sh
- validate_yaml.sh
- cleanup_verification.sh
- cleanup_global_packages.sh
- cleanup_targeted.sh
- check_remaining_packages.sh
- analyze_scripts.sh

Keeping only essential project scripts:
✅ setup.sh - Project setup and venv creation
✅ test_runner.sh - Main test execution
✅ test_verification.sh - Test validation
✅ activate_venv.sh - Venv helper utility
✅ monitor_workflow.sh - CI/CD monitoring

Repository is now clean and focused on core functionality.

Author: SaahilParmar