Report missing datasets executable in download smoke

[1613358894]

Summary

• report missing datasets executable as a controlled datasets_executable_missing download-smoke execution blocker
• keep the row unexecuted with downloads_triggered=0, network_access=false, and external_tools=false
• document the stable status in the reference contract

Root cause

A bounded download-smoke execute --execute run on a machine without datasets raised FileNotFoundError, which escaped to the outer CLI error handler and was reported as generic input_invalid. That made AI controllers treat an environment readiness issue like a malformed command manifest.

Validation

• python -m pytest tests/test_cli_download_smoke.py -q --basetemp .pytest_tmp_missing_datasets_execute -p no:cacheprovider
• python -m pytest tests/test_docs_consistency.py tests/test_docs_hygiene_script.py -q --basetemp .pytest_tmp_missing_datasets_docs -p no:cacheprovider
• python scripts/check_workspace_hygiene.py
• python scripts/check_docs_hygiene.py
• git diff --check
• bounded local missing-datasets probe: download-smoke execute --execute --limit 1 returned native exit 2, single JSON stdout, wrote execution audit files, and triggered no downloads

Boundaries

No tool installation, provider lookup, broad download, external bioinformatics execution, tag, release, or asset upload was performed.