Closes #116. Deletes config/models.yaml, internal/config/models.go (LoadModels, ModelFor), its test, the ModelsFile field on Config, and SUPERVISOR_MODELS_FILE from .env.example. Option A from the issue. Merge-gate evidence: negative claim independently re-established (no Go, shell, Dockerfile, k8s, CI or infra-repo caller); task check exit 0 across both modules; CI run 7374 green on the PR head. Co-authored-by: Mathias <mthbqv@gmail.com>