feat(prod): complete production deployment with Podman containerization

- Migrate from Docker to Podman for enhanced security (rootless containers)
- Add production-ready Dockerfile with multi-stage builds
- Configure production environment with Arbitrum mainnet RPC endpoints
- Add comprehensive test coverage for core modules (exchanges, execution, profitability)
- Implement production audit and deployment documentation
- Update deployment scripts for production environment
- Add container runtime and health monitoring scripts
- Document RPC limitations and remediation strategies
- Implement token metadata caching and pool validation

This commit prepares the MEV bot for production deployment on Arbitrum
with full containerization, security hardening, and operational tooling.

🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>

scripts/production-start.sh

@@ -137,8 +137,12 @@ start_monitoring() {
 start_mev_bot() {
     log "🚀 Starting MEV Bot in PRODUCTION mode..."
 
-    # Set production environment
-    export $(cat .env.production.secure | grep -v '^#' | xargs)
+    # Set production environment safely (avoid code injection)
+    if [[ -f ".env.production.secure" ]]; then
+        set -a
+        source .env.production.secure
+        set +a
+    fi
 
     # Additional production environment
     export GO_ENV=production
@@ -249,7 +253,11 @@ quick_deploy() {
     log "🚀 QUICK DEPLOYMENT MODE - MAXIMUM SPEED TO PROFIT"
 
     # Skip most checks, assume environment is ready
-    export $(cat .env.production.secure | grep -v '^#' | xargs)
+    if [[ -f ".env.production.secure" ]]; then
+        set -a
+        source .env.production.secure
+        set +a
+    fi
     export GO_ENV=production
     export DEBUG=false