Crate orb8_cli 

Command-line interface for orb8

Modes:

• Cluster mode: Connects to orb8-server via gRPC
• Standalone mode: Directly loads probes on target node

Commands:

• orb8 trace network - Network flow tracing
• orb8 trace syscall - System call monitoring
• orb8 trace gpu - GPU telemetry
• orb8 info - Cluster information

Implementation will be added in Phase 3+.