Summary

• Introduces centralized PowerMetrics management system for Apple Silicon monitoring
• Adds dedicated powermetrics parser module for better data handling
• Improves CPU metrics collection on macOS with enhanced error handling

Changes

• Created PowerMetricsManager singleton to manage a single powermetrics process
• Added PowerMetricsParser for parsing powermetrics output
• Refactored Apple Silicon GPU reader to use the new management system
• Added adaptive interval support (1 second for local Apple Silicon monitoring)
• Enhanced CPU metrics collection with better macOS compatibility
• Improved process monitoring and automatic restart capabilities

Test plan

• Run cargo test to ensure all tests pass
• Test on Apple Silicon Mac with sudo ./target/release/all-smi view
• Verify CPU and GPU metrics are collected correctly
• Test powermetrics process management (automatic restart on failure)
• Run clippy and ensure no warnings: cargo clippy