Implement 36 missing CLI subcommands for scenarios 04-47

Phase 1: Simple GET Commands (system, resource, edge, config)
- system: restart, status, config
- resource: status, deallocate
- edge: status, balance, transfer
- config: import (already existed)

Phase 2: Exchange & Market Commands
- exchange: order, orders, book, history
- marketplace: bid, bids, ask, asks

Phase 3: AI & GPU Commands
- agent (AI): job, jobs, submit, cancel
- gpu: register, update

Phase 4: Wallet, Hermes, Operations
- wallet: export, import
- hermes: send, receive, peers
- operations: vote, proposal, delegate

Phase 5: Simulate Commands
- simulate: run, status, result

All commands follow common pattern using AITBCHTTPClient for backend API interaction.

cli/aitbc_cli/commands/system.py

@@ -5,6 +5,13 @@ System commands for AITBC CLI
 
 import click
 import os
+import subprocess
+from pathlib import Path
+from ..utils import output, error, success
+from ..config import get_config
+from aitbc import get_logger, AITBCHTTPClient, NetworkError
+
+logger = get_logger(__name__)
 
 @click.group()
 def system():
@@ -50,5 +57,80 @@ def check(service):
             else:
                 click.echo(f"❌ {svc}: {service_file}")
 
+
+@system.command()
+@click.option('--service', required=True, help='Service to restart (e.g., blockchain-node, wallet)')
+@click.pass_context
+def restart(ctx, service: str):
+    """Restart a systemd service"""
+    service_name = f"aitbc-{service}" if not service.startswith("aitbc-") else service
+    
+    try:
+        success(f"Restarting service: {service_name}")
+        result = subprocess.run(
+            ["sudo", "systemctl", "restart", service_name],
+            capture_output=True,
+            text=True,
+            timeout=30
+        )
+        
+        if result.returncode == 0:
+            success(f"Service {service_name} restarted successfully")
+            output({"service": service_name, "status": "restarted"}, ctx.obj.get("output_format", "table"))
+        else:
+            error(f"Failed to restart service: {result.stderr}")
+    except subprocess.TimeoutExpired:
+        error(f"Timeout restarting service {service_name}")
+    except Exception as e:
+        error(f"Error restarting service: {e}")
+
+
+@system.command()
+@click.pass_context
+def status(ctx):
+    """Get system status from coordinator-api"""
+    config = get_config()
+    
+    try:
+        http_client = AITBCHTTPClient(base_url=config.coordinator_url, timeout=10)
+        status_data = http_client.get("/api/v1/status")
+        success("System Status:")
+        output(status_data, ctx.obj.get("output_format", "table"))
+    except NetworkError as e:
+        error(f"Network error: {e}")
+    except Exception as e:
+        error(f"Error fetching status: {e}")
+
+
+@system.command()
+@click.option('--show-secrets', is_flag=True, help='Show sensitive values like API keys')
+@click.pass_context
+def config(ctx, show_secrets: bool):
+    """Display system configuration from /etc/aitbc/blockchain.env"""
+    config_path = Path("/etc/aitbc/blockchain.env")
+    
+    if not config_path.exists():
+        error(f"Configuration file not found: {config_path}")
+        return
+    
+    try:
+        with open(config_path, 'r') as f:
+            config_lines = f.readlines()
+        
+        config_data = {}
+        for line in config_lines:
+            line = line.strip()
+            if line and not line.startswith('#') and '=' in line:
+                key, value = line.split('=', 1)
+                # Hide secrets unless explicitly requested
+                if not show_secrets and any(secret in key.lower() for secret in ['key', 'secret', 'password', 'token']):
+                    value = '***HIDDEN***'
+                config_data[key.strip()] = value.strip()
+        
+        success("System Configuration:")
+        output(config_data, ctx.obj.get("output_format", "table"))
+    except Exception as e:
+        error(f"Error reading configuration: {e}")
+
 if __name__ == '__main__':
     system()