Marcel Raddatz 866603711d Add test infrastructure and common module ...

- Testcontainers 2.0.4 (PostgreSQL) for repository integration tests
- AbstractIntegrationTest base class with shared Postgres container
- application-test.yml for test profile
- Common module: ApiResponse/ApiError envelopes, GlobalExceptionHandler,
  ResourceNotFoundException, ConflictException, ValidationException,
  HouseholdContext record

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-04-01 21:05:17 +02:00

backend

Add test infrastructure and common module

2026-04-01 21:05:17 +02:00

docker-compose.yml

Add Docker Compose setup with PostgreSQL 16 and Spring Boot app

2026-04-01 20:51:54 +02:00

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