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/enable-execution-mode.sh

@@ -1,8 +1,8 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Enable MEV Bot Execution Mode
 # Updates configuration to allow live trading with flash loans
 
-set -e
+set -euo pipefail
 
 CONFIG_FILE="config/bot_config.yaml"
 KEYSTORE_DIR="keystore/production"