- Generate from Spring Initializr with Gradle Groovy DSL, Java 21, Spring Boot 4.0.6
- Dependencies: Web, Security, Data JPA, PostgreSQL Driver, Flyway, Validation, Lombok
- Add H2 runtime dependency for zero-setup local development
- Configure application.yml: H2 in-memory database, port 8080, Flyway with ddl-auto=validate
- Create placeholder Flyway migration V1__init_schema.sql
- Verify ./gradlew test passes and ./gradlew bootRun starts on port 8080
- Update AGENTS.md and README.md: Maven → Gradle commands, Spring Boot 3 → 4
