Interface PKClassifierResult

Confidence score 0..1.

Whether the classifier reached a confident nominee.

Field name of the PK nominee, when Confident=true.

• Single-column natural PK → the resolving column's name.
• Synthetic fallback → SYNTHETIC_PK_FIELD_NAME.
• Composite key → the first member of NomineeFields (for callers that only read a single name); NomineeFields carries the full set.

Ordered set of field names that together form the key. Populated for the composite strategy (the minimal unique+stable column set). For single-column and synthetic strategies this is the one-element set matching Nominee.

Human-readable reason — used in audit trail + structured progress events.

Which strategy in the cascade produced the nominee.