import type { HookInput, GuardResult } from '../../core/index.js';
/**
 * Transcript guard: fires PostToolUse on all tools (no matcher).
 * Appends tool call metadata to the session transcript JSONL file.
 * Silent — returns empty GuardResult, no context injection.
 *
 * Note: appendFileSync is safe for single-agent sessions (typical usage).
 * Multi-agent scenarios sharing a session_id could interleave partial writes;
 * if multi-agent transcript support is needed, add file locking or per-agent files.
 */
export declare function transcriptGuard(input: HookInput, cwd: string): Promise<GuardResult>;
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