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/check-wallet-balance.sh

@@ -1,8 +1,8 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Check wallet balance on Arbitrum One
 # Verifies wallet is ready for MEV bot execution
 
-set -e
+set -euo pipefail
 
 PRIVATE_KEY_FILE="/tmp/wallet_key.txt"
 ALCHEMY_RPC="https://arb-mainnet.g.alchemy.com/v2/d6VAHgzkOI3NgLGem6uBMiADT1E9rROB"
@@ -70,7 +70,12 @@ if [ -z "$BALANCE_HEX" ]; then
 fi
 
 # Convert hex to decimal (wei)
-BALANCE_WEI=$(echo $((BALANCE_HEX)))
+# Handle both with and without 0x prefix
+if [[ "$BALANCE_HEX" == 0x* ]]; then
+    BALANCE_WEI=$((BALANCE_HEX))
+else
+    BALANCE_WEI=$((0x$BALANCE_HEX))
+fi
 
 # Convert wei to ETH (1 ETH = 10^18 wei)
 BALANCE_ETH=$(echo "scale=6; $BALANCE_WEI / 1000000000000000000" | bc)