- templates/app now carries the vet server (parents/pets/treatments/vets/appointments)
- added domain/jobs slice with /jobs OpenAPI paths and Job schema (x- extensions)
- added pipelines/shared scaffold (loader, ports, registry) and the
appointment_reminder family; worker.py dispatches jobs by kind
- wired init.py, config.py worker knobs, .env.example, docker-compose worker
- unit tests for jobs routes, the pipeline family and worker dispatch (12 passing)