```

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- Remove outdated documentation: BITCOIN-WALLET-SETUP.md, LOCAL_ASSETS_SUMMARY.md, README-CONTAINER-DEPLOYMENT.md, README-DOMAIN-DEPLOYMENT.md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/start_remote_tunnel.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+# Start SSH tunnel to remote AITBC coordinator
+
+echo "Starting SSH tunnel to remote AITBC coordinator..."
+
+# Check if tunnel is already running
+if pgrep -f "ssh.*-L.*8001:localhost:8000.*aitbc" > /dev/null; then
+    echo "✅ Tunnel is already running"
+    exit 0
+fi
+
+# Start the tunnel
+ssh -f -N -L 8001:localhost:8000 aitbc
+
+if [ $? -eq 0 ]; then
+    echo "✅ SSH tunnel established on port 8001"
+    echo "   Remote coordinator available at: http://localhost:8001"
+    echo "   Health check: curl http://localhost:8001/v1/health"
+else
+    echo "❌ Failed to establish SSH tunnel"
+    exit 1
+fi