Effective context. For a declared scope this contains RESOLVED dimensions only.
Human-readable notes (discarded spoof attempts, applied defaults, …) for audit.
Per-dimension provenance — the structured form of Diagnostics.
Diagnostics is prose for a human reading a log; this is the same information as data,
so the explainer and the execution-log writer can record WHO decided each value without
re-parsing sentences. Empty for an undeclared scope, which resolves nothing.
Result of resolving a scope's dimensions.