Customer.io Local Dev Loop Overview Set up an efficient local development workflow for Customer.io: environment isolation via separate workspaces, a dry-run client for safe development, test mocks for unit tests, and prefixed events that never pollute production data. Prerequisites - installed - Separate Customer.io workspace for development (recommended — free workspaces available) - or similar for environment variable loading Instructions Step 1: Environment Configuration Step 2: Environment-Aware Client Step 3: Test Mocks for Unit Tests Step 4: Integration Test with Real API Run integratio…