/**
 * Canonical Instruction Loader
 *
 * Reads the canonical instruction source file from `.smartergpt/instructions/lex.md`
 * (or a custom path from config) and prepares it for projection.
 */
import { LexYaml } from "../config/lex-yaml-schema.js";
/**
 * Result of loading canonical instructions
 */
export interface CanonicalResult {
    /** Raw content of the canonical instruction file */
    content: string;
    /** Absolute path to the canonical file */
    path: string;
    /** Whether the file exists */
    exists: boolean;
    /** SHA-256 hash of the content for idempotency checking */
    hash: string;
}
/**
 * Load canonical instruction content from the repository
 *
 * @param repoRoot - Absolute path to the repository root
 * @param config - Optional LexYaml config to override default path
 * @returns CanonicalResult with content, path, existence, and hash
 *
 * @example
 * ```ts
 * const result = loadCanonicalInstructions('/path/to/repo');
 * if (result.exists) {
 *   console.log("Content hash:", result.hash);
 *   console.log("Content:", result.content);
 * } else {
 *   console.log("No canonical file at:", result.path);
 * }
 * ```
 */
export declare function loadCanonicalInstructions(repoRoot: string, config?: LexYaml): CanonicalResult;
/**
 * Compute SHA-256 hash of content for idempotency checking
 *
 * @param content - String content to hash
 * @returns Hex-encoded SHA-256 hash
 */
export declare function computeHash(content: string): string;
/**
 * Get the default canonical instruction path
 *
 * @returns The default relative path for canonical instructions
 */
export declare function getDefaultCanonicalPath(): string;