chore(systemd): remove obsolete systemd service files and update infrastructure documentation

- Remove 8 unused systemd service files from coordinator-api/systemd/
  - aitbc-adaptive-learning.service (port 8005)
  - aitbc-advanced-ai.service
  - aitbc-enterprise-api.service
  - aitbc-gpu-multimodal.service (port 8003)
  - aitbc-marketplace-enhanced.service (port 8006)
  - aitbc-modality-optimization.service (port 8004)
  - aitbc-multimodal.service (port 8002)
  - aitbc-openclaw-enhanced.service (port 8007

dev/service/start_dashboard.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+echo "=== Starting AITBC Miner Dashboard ==="
+echo ""
+
+# Find available port
+PORT=8080
+while [ $PORT -le 8090 ]; do
+    if ! netstat -tuln 2>/dev/null | grep -q ":$PORT "; then
+        echo "✓ Found available port: $PORT"
+        break
+    fi
+    echo "Port $port is in use, trying next..."
+    PORT=$((PORT + 1))
+done
+
+if [ $PORT -gt 8090 ]; then
+    echo "❌ No available ports found between 8080-8090"
+    exit 1
+fi
+
+# Start the dashboard
+echo "Starting dashboard on port $PORT..."
+nohup python3 -m http.server $PORT --bind 0.0.0.0 > dashboard.log 2>&1 &
+PID=$!
+
+echo ""
+echo "✅ Dashboard is running!"
+echo ""
+echo "Access URLs:"
+echo "  Local:    http://localhost:$PORT"
+echo "  Network:  http://$(hostname -I | awk '{print $1}'):$PORT"
+echo ""
+echo "Dashboard file: miner-dashboard.html"
+echo "Process ID: $PID"
+echo "Log file: dashboard.log"
+echo ""
+echo "To stop: kill $PID"
+echo "To view logs: tail -f dashboard.log"