Config / dataset + task

Config Core is the only normative reader. Delivery unit is a dataset root.

my-dataset/                 # CLI path (ageval.dataset/1)
├── ageval.yaml
├── profiles.yaml           # THE job (lock/run default). ageval publish also packs every root profiles*.yaml
├── env.example
├── shared/lib/             # optional; import shared.lib.*
└── tasks/<task_id>/
    ├── task.yaml           # ageval.task/1 — roles + intent
    ├── run.py              # async def run(ctx)
    ├── evaluator.py
    ├── environment/        # Dockerfile, setup.sh, compose
    ├── evaluation/         # gold — not for Agent
    └── data/               # seed