/**
 * Pattern Memory system for CLEO BRAIN.
 *
 * Extracts, stores, and queries workflow/blocker/success/failure/optimization
 * patterns from completed tasks and epics.
 *
 * Storage: SQLite brain_patterns table per ADR-009 Section 3.2.
 *
 * @task T4768, T5241
 * @epic T4763
 */
/** Pattern types from ADR-009. */
export type PatternType = 'workflow' | 'blocker' | 'success' | 'failure' | 'optimization';
/** Impact level. */
export type PatternImpact = 'low' | 'medium' | 'high';
/** Parameters for storing a new pattern. */
export interface StorePatternParams {
    type: PatternType;
    pattern: string;
    context: string;
    impact?: PatternImpact;
    antiPattern?: string;
    mitigation?: string;
    examples?: string[];
    successRate?: number;
    /**
     * T549 Wave 1-A: origin of this pattern.
     * Used to route sourceConfidence at write time.
     * Values starting with 'auto' map to 'speculative'; otherwise 'agent'.
     */
    source?: string;
    /**
     * T992: Internal flag — when true, bypasses the verifyAndStore gate.
     * Set only by storeVerifiedCandidate in extraction-gate.ts to avoid
     * infinite recursion (gate → storeVerifiedCandidate → storePattern → gate).
     * External callers MUST NOT set this flag.
     */
    _skipGate?: boolean;
}
/** Parameters for searching patterns. */
export interface SearchPatternParams {
    type?: PatternType;
    impact?: PatternImpact;
    query?: string;
    minFrequency?: number;
    limit?: number;
}
/**
 * Store a new pattern.
 * If a similar pattern already exists (same type + matching text), increments frequency.
 * @task T4768, T5241
 */
export declare function storePattern(projectRoot: string, params: StorePatternParams): Promise<{
    examples: any;
    frequency: number;
    id: string;
    type: "success" | "failure" | "workflow" | "blocker" | "optimization";
    updatedAt: string | null;
    peerId: string;
    pattern: string;
    qualityScore: number | null;
    memoryTier: "short" | "medium" | "long" | null;
    memoryType: "semantic" | "episodic" | "procedural" | null;
    verified: boolean;
    validAt: string;
    invalidAt: string | null;
    expiredAt: string | null;
    network: "world" | "bank" | "opinion" | "observation" | null;
    sourceConfidence: "owner" | "task-outcome" | "agent" | "speculative" | null;
    citationCount: number;
    tierPromotedAt: string | null;
    tierPromotionReason: string | null;
    contentHash: string | null;
    provenanceClass: string | null;
    peerScope: string;
    context: string;
    successRate: number | null;
    impact: "medium" | "low" | "high" | null;
    antiPattern: string | null;
    mitigation: string | null;
    examplesJson: string | null;
    extractedAt: string;
    occurrenceCount: number;
    lastSeenAt: string | null;
    pruneCandidateAt?: undefined;
    pruneCandidate?: undefined;
} | {
    id: string;
    type: PatternType;
    pattern: string;
    context: string;
    frequency: number;
    successRate: number | null;
    impact: PatternImpact | null;
    antiPattern: string | null;
    mitigation: string | null;
    examplesJson: string;
    examples: never[];
    extractedAt: string;
    qualityScore: number;
    memoryTier: "medium";
    memoryType: "procedural";
    sourceConfidence: "agent" | "speculative";
    verified: boolean;
    contentHash: string;
    tierPromotedAt: null;
    tierPromotionReason: null;
    invalidAt: null;
    pruneCandidateAt: null;
    citationCount: number;
    pruneCandidate: boolean;
}>;
/**
 * Search patterns by criteria.
 * @task T4768, T5241
 */
export declare function searchPatterns(projectRoot: string, params?: SearchPatternParams): Promise<{
    examples: any;
    frequency: number;
    id: string;
    type: "success" | "failure" | "workflow" | "blocker" | "optimization";
    updatedAt: string | null;
    peerId: string;
    pattern: string;
    qualityScore: number | null;
    memoryTier: "short" | "medium" | "long" | null;
    memoryType: "semantic" | "episodic" | "procedural" | null;
    verified: boolean;
    validAt: string;
    invalidAt: string | null;
    expiredAt: string | null;
    network: "world" | "bank" | "opinion" | "observation" | null;
    sourceConfidence: "owner" | "task-outcome" | "agent" | "speculative" | null;
    citationCount: number;
    tierPromotedAt: string | null;
    tierPromotionReason: string | null;
    contentHash: string | null;
    provenanceClass: string | null;
    peerScope: string;
    context: string;
    successRate: number | null;
    impact: "medium" | "low" | "high" | null;
    antiPattern: string | null;
    mitigation: string | null;
    examplesJson: string | null;
    extractedAt: string;
    occurrenceCount: number;
    lastSeenAt: string | null;
}[]>;
/**
 * Get pattern statistics.
 * @task T4768, T5241
 */
export declare function patternStats(projectRoot: string): Promise<{
    total: number;
    byType: Record<string, number>;
    byImpact: Record<string, number>;
    highestFrequency: {
        pattern: string;
        frequency: number;
    } | null;
}>;
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