Optional database test resources (testcontainers-backed). Lives outside summer-test so the core test infrastructure never forces testcontainers on consumers that do not use a DB resource.

Compile-time DI engine: bean discovery, dependency resolution, and AOT code generation

The user-facing test dependency: one artifact for the whole test toolchain — the @SummerTest infrastructure (summer-test) plus the optional database test resources (summer-test-db). The core infrastructure itself stays ...