```

chore: enhance .gitignore and remove obsolete documentation files

- Reorganize .gitignore with categorized sections for better maintainability
- Add comprehensive ignore patterns for Python, Node.js, databases, logs, and build artifacts
- Add project-specific ignore rules for coordinator, explorer, and deployment files
- Remove outdated documentation: BITCOIN-WALLET-SETUP.md, LOCAL_ASSETS_SUMMARY.md, README-CONTAINER-DEPLOYMENT.md, README-DOMAIN-DEPLOYMENT.md
```

scripts/gpu/start_gpu_miner.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+# Start GPU Miner Client
+
+echo "=== AITBC GPU Miner Client Startup ==="
+echo "Starting GPU miner client..."
+echo ""
+
+# Check if GPU is available
+if ! command -v nvidia-smi &> /dev/null; then
+    echo "WARNING: nvidia-smi not found, GPU may not be available"
+fi
+
+# Show GPU info
+if command -v nvidia-smi &> /dev/null; then
+    echo "=== GPU Status ==="
+    nvidia-smi --query-gpu=name,memory.used,memory.total,utilization.gpu,temperature.gpu --format=csv,noheader,nounits
+    echo ""
+fi
+
+# Check if coordinator is running
+echo "=== Checking Coordinator API ==="
+if curl -s http://localhost:8000/health > /dev/null 2>&1; then
+    echo "✓ Coordinator API is running on port 8000"
+else
+    echo "✗ Coordinator API is not accessible on port 8000"
+    echo "  The miner will wait for the coordinator to start..."
+fi
+
+echo ""
+echo "=== Starting GPU Miner ==="
+cd /home/oib/windsurf/aitbc
+python3 gpu_miner_with_wait.py