"""Pytest target for the blackbox harness.

Runs inside the e2e-runner Docker image (or directly on a Tier-2 Jetson
when invoked via `e2e/jetson/run-tier2.sh`). Mirrors the test-spec
grouping in `_docs/02_document/tests/`:

    positive/        FT-P-* scenarios
    negative/        FT-N-* scenarios
    performance/     NFT-PERF-* scenarios
    resilience/      NFT-RES-* scenarios
    security/        NFT-SEC-* scenarios
    resource_limit/  NFT-LIM-* scenarios
"""