1. **Design**: - Map UI actions to contract methods (e.g., "Release Payment" → `releaseFunds()`). - Plan error handling and transaction feedback. 2. **Development**: - Integrate ethers.js for contract interaction. - Build real-time dashboards (milestone tracking, balance updates). 3. **Testing**: - End-to-end tests for full project lifecycle. - Validate event listeners and state synchronization. - Test transaction rollback scenarios.