/** Detection and safe cleanup rules for pre-adapter platform installations. */
export interface LegacySurface {
    id: string;
    path: string;
    scope: 'project' | 'user';
    ownership: 'marker' | 'named-entry' | 'monomind-file';
    action: 'remove-block' | 'remove-entry' | 'remove-file' | 'migrate';
}
export interface LegacyMigrationResult {
    changed: readonly string[];
    skipped: readonly string[];
    diagnostics: readonly string[];
}
/**
 * Every surface is explicit so detection can remain read-only and never infer
 * ownership from an arbitrary file name or config location.
 */
export declare const LEGACY_SURFACE_INVENTORY: readonly LegacySurface[];
export declare function isMonomindOwned(content: string): boolean;
export declare function findLegacySurfaces(root: string, scope: 'project' | 'user'): string[];
/** Remove only old marker blocks; callers retain unrelated content and keys. */
export declare function removeLegacyManagedBlocks(content: string): string;
/** Recover a YAML file corrupted by the historical HTML comment installer. */
export declare function deCorruptAiderYaml(content: string): string;
export declare function migrateLegacyArtifacts(root: string, scope: 'project' | 'user', options?: {
    dryRun?: boolean;
    removeLegacy?: boolean;
    /** Called before a verified legacy artifact is changed or removed. */
    beforeWrite?: (path: string) => void;
}): LegacyMigrationResult;
//# sourceMappingURL=migration.d.ts.map