LearnedEntry interface exported

export interface LearnedEntry {
  /** Normalised field signals used to produce the classification. */
  signals: string;
  type: FieldType;
  /**
   * Which generator the AI recommended for this field type.
   * Defaults to `type` when not provided (backward-compatible).
   */
  generatorType?: FieldType;
  timestamp: number;
  /**
   * Origin of this entry:
   * - "auto" → learned organically during real-use (Chrome AI / TF.js feedback)
   * - "rule" → imported/rebuilt from a configured FieldRule during retrain
   * Defaults to "auto" when absent (backward-compatible).
   */
  source?: "auto" | "rule";
}