refactor: simplify deployment automation and convert to ES modules

- Remove deployment of RewardDistributor, PerformanceAggregator, StakingPoolFactory, and DAOGovernanceEnhanced contracts
- Reorder initialization to register contracts before initializing TreasuryManager
- Add error handling for duplicate contract registration
- Convert require() to ES module imports in deploy-automation.js, monitor-contracts.js, and verify-deployment.js
- Move fs import to top of deploy-automation.js

contracts/scripts/verify-deployment.js

@@ -3,8 +3,9 @@
  * Verifies contract deployments and performs basic health checks
  */
 
-const { ethers } = require("hardhat");
-const fs = require("fs");
+import hardhat from "hardhat";
+const { ethers } = hardhat;
+import fs from "fs";
 
 async function main() {
   console.log("=== AITBC Smart Contract Deployment Verification ===");