Implement system compatibility detection

[scottbrown]

Problem

The dotfiles system doesn't account for different operating systems, architectures, or platform-specific requirements.

Solution

Add system compatibility features:

• Operating system detection (macOS, Linux distributions)
• Architecture detection (Intel, Apple Silicon, etc.)
• Platform-specific configuration variations
• Conditional package installation based on system capabilities

Benefits

• Seamless operation across different systems
• Platform-optimized configurations
• Reduced manual customization needed
• Better user experience on diverse hardware

Implementation Notes

• Create platform detection utilities
• Support conditional configuration loading
• Add platform-specific package variants where needed
• Document platform-specific setup requirements
• Test across different operating systems and architectures