/**
 * Quick Retrieve — lightweight scar search for hook invocation.
 *
 * Designed to be called from the auto-retrieve UserPromptSubmit hook
 * via: node dist/hooks/quick-retrieve.js <prompt> <level> [token_budget]
 *
 * Imports the storage layer directly (no MCP overhead).
 * Routes to:
 *   1. In-memory vector search (MCP server process with warm cache)
 *   2. Disk cache keyword search (hook child process reading hook-scars.json)
 *   3. LocalStorage keyword search (free tier fallback)
 *
 * No side effects: no surfaced scar tracking, no variant assignment,
 * no confirmation gate. Pure retrieval for passive context injection.
 *
 * Performance target: <300ms total.
 */
import type { Project } from "../types/index.js";
export interface QuickRetrieveOptions {
    project?: Project;
    tokenBudget?: number;
}
/**
 * Perform a quick scar search optimized for hook invocation.
 *
 * Returns formatted compact text suitable for additionalContext injection,
 * or null if no relevant scars found or retrieval level is "none".
 */
export declare function quickRetrieve(prompt: string, retrievalLevel: string, options?: QuickRetrieveOptions): Promise<string | null>;
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