refactor: clean up configuration and add production infrastructure

- Add .aitbc.yaml configuration file with test values
- Simplify .gitignore by removing merge conflicts and redundant entries
- Reorganize .gitignore sections for better clarity
- Set chain_id and proposer_id to empty strings in config.py (require explicit configuration)
- Add production Helm values configuration
- Add production nginx configuration
- Update environment variable handling in chain settings

scripts/service/stop-services.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# Stop all AITBC services
+
+echo "🛑 Stopping AITBC Services"
+echo "========================"
+
+# Stop by PID if file exists
+if [ -f .service_pids ]; then
+    PIDS=$(cat .service_pids)
+    echo "Found PIDs: $PIDS"
+    for PID in $PIDS; do
+        if kill -0 $PID 2>/dev/null; then
+            echo "Stopping PID $PID..."
+            kill $PID
+        fi
+    done
+    rm -f .service_pids
+fi
+
+# Force kill any remaining services
+echo "Cleaning up any remaining processes..."
+sudo fuser -k 8000/tcp 2>/dev/null || true
+sudo fuser -k 9080/tcp 2>/dev/null || true
+sudo fuser -k 3001/tcp 2>/dev/null || true
+sudo fuser -k 3002/tcp 2>/dev/null || true
+pkill -f "uvicorn.*aitbc" 2>/dev/null || true
+pkill -f "server.py" 2>/dev/null || true
+
+echo "✅ All services stopped!"