import type { ScaffoldConfig } from '../types/index.js';
import type { ScaffoldError, ScaffoldWarning } from '../utils/errors.js';
/** Result of loadConfig. */
interface LoadResult {
    config: ScaffoldConfig | null;
    errors: ScaffoldError[];
    warnings: ScaffoldWarning[];
}
/**
 * Load and validate .scaffold/config.yml.
 *
 * Implements a 6-phase validation pipeline:
 * - Phase 1: File existence (short-circuit)
 * - Phase 2: YAML parse + shape check (short-circuit)
 * - Phase 3: Version check + v1 migration (short-circuit)
 * - Phase 4: Required fields validation (accumulate)
 * - Phase 5: Unknown top-level fields → warnings (accumulate)
 * - Phase 6: Cross-field validation (accumulate)
 */
export declare function loadConfig(projectRoot: string, knownSteps: string[]): LoadResult;
export {};
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