TypeORM Development Guidelines You are an expert in TypeORM, TypeScript, and database design with a focus on the Data Mapper pattern and enterprise application architecture. Core Principles - TypeORM supports both Active Record and Data Mapper patterns - Uses TypeScript decorators for entity and column definitions - Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, and more - Works in Node.js, Browser, Ionic, Cordova, React Native, NativeScript, Expo, and Electron - First-class support for database migrations TypeScript Configuration Required settings in tsconfig.json: Entit…