import type Database from 'better-sqlite3';
export interface MigrationResult {
    success: boolean;
    phases: PhaseResult[];
    totalElapsedMs: number;
    errors: string[];
}
export interface PhaseResult {
    phase: string;
    elapsedMs: number;
    details: Record<string, number | string>;
    error?: string;
}
export interface MigrationPhase {
    name: string;
    execute(db: Database.Database, projectRoot: string): PhaseResult;
    validatePre(db: Database.Database): boolean;
    validatePost(db: Database.Database): boolean;
}
export declare function getAvailablePhases(): string[];
/**
 * Run a single named phase. Throws if phase name is unknown.
 */
export declare function runPhase(db: Database.Database, phaseName: string, projectRoot: string): PhaseResult;
/**
 * Run the full 9-phase Sprint 31 migration on the given database.
 * Phases execute in order. Each phase runs in its own transaction.
 * Idempotent: phases skip work when preconditions are already met.
 *
 * @param db - Database connection
 * @param projectRoot - Project root directory (for YAML/script paths in Phase 8)
 * @returns MigrationResult with phase details and elapsed times
 */
export declare function runMigration(db: Database.Database, projectRoot: string): MigrationResult;
/**
 * Pre-migration validation: check that the database has the expected pre-migration state.
 * (builtin:2.0 characteristics — entity_types table, 27+ relation types)
 */
export declare function validatePreMigration(db: Database.Database): void;
/**
 * Post-migration validation: verify the database is in builtin:3.0 state.
 */
export declare function validatePostMigration(db: Database.Database): void;
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