ContinuousLearningConfig interface exported

export interface ContinuousLearningConfig {
  /** Whether to store learned signal→type pairs from Chrome AI */
  captureFromAI: boolean;
  /** Whether to store user corrections */
  captureUserCorrections: boolean;
  /** Minimum confidence threshold to accept learned sample */
  minConfidence: number;
  /** Max learned samples to keep before rotation */
  maxStoredSamples: number;
  /** Whether to periodically re-validate with learned samples */
  revalidateOnUpdate: boolean;
}