import type { HookInput, GuardResult } from '../../core/index.js';
/**
 * Explore guard: fires on Read|Glob|Grep|Edit|Write (PreToolUse).
 * Suggests checking codebase map before deep exploration.
 * Includes tiered staleness awareness when CODEBASE.md has YAML frontmatter:
 *   0–10 commits stale  → no warning (within tolerance)
 *   11–30 commits stale → warning with commit count
 *   31+ commits stale   → block Edit/Write (don't block Read/Glob/Grep)
 */
export declare function exploreGuard(input: HookInput, cwd: string): Promise<GuardResult>;
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