/**
 * @signetai/core - Markdown utilities
 *
 * Functions for managing legacy Signet blocks in markdown files.
 * The block markers are kept for migration and cleanup compatibility.
 */
export declare const SIGNET_BLOCK_START = "<!-- SIGNET:START -->";
export declare const SIGNET_BLOCK_END = "<!-- SIGNET:END -->";
/**
 * Build the Signet system block.
 *
 * Deprecated: system prompt injection now lives in the session-start hook.
 * This function intentionally returns an empty string to preserve API
 * compatibility for downstream imports during migration.
 */
export declare function buildSignetBlock(workspace?: string): string;
/**
 * Build the SIGNET-ARCHITECTURE.md content — an agent-facing explainer
 * of how the memory pipeline works. This file lives in the Signet workspace and
 * is referenced from the Signet block so agents can read it on demand.
 */
export declare function buildArchitectureDoc(workspace?: string): string;
/**
 * Strip any existing Signet block from content to prevent duplication
 * when re-generating files.
 *
 * This handles the case where users' AGENTS.md was copied from a template
 * that already contains the Signet block, ensuring we don't create duplicates
 * on subsequent sync operations.
 */
export declare function stripSignetBlock(content: string): string;
/**
 * Check if content contains a Signet block
 */
export declare function hasSignetBlock(content: string): boolean;
/**
 * Extract the Signet block content (without delimiters) if present
 */
export declare function extractSignetBlock(content: string): string | null;
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