Dataset Source Assessment
Consume a registered source reference. Propose aiwg dataset check <source-id> --json
and aiwg dataset preview <source-id> --json; these operations must remain bounded,
side-effect free, and redacted. Explain adapter/version, schema binding, identity
and revision strategy, incremental cursor support, locality/network behavior,
and evidence-backed maturity.
Never inspect credential or environment values. Distinguish absent, stale,
unverified, unsupported, and degraded capability states. Emit an assessment
reference for dataset-capability-recommend.