feat: enhance smart contract testing and deployment
- Add comprehensive test files for core contracts (ContractRegistry, TreasuryManager, AgentMarketplaceV2, EscrowService, DynamicPricing)
- Add Foundry fuzz tests for ContractRegistry, TreasuryManager, and AgentMarketplaceV2
- Add deployment automation scripts (deploy-automation.js, verify-deployment.js, monitor-contracts.js)
- Fix Hardhat/toolbox version compatibility in package.json
- Update smart-contract-tests.yml workflow to include deployment job
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