/**
 * engram_find_by_file — find observations related to a specific file.
 *
 * WHEN TO USE: BEFORE modifying any file. Returns what engram knows about it —
 * past bugs, decisions, patterns, and important context that should inform your changes.
 */
import type { EngramRestClient, Observation } from '../client.js';
import type { PluginConfig } from '../config.js';
import type { AnyAgentTool, OpenClawPluginToolContext } from '../types/openclaw.js';
export declare function createEngramFindByFileTool(ctx: OpenClawPluginToolContext, client: EngramRestClient, config: PluginConfig): AnyAgentTool;
export declare function formatFileContext(file: string, observations: Observation[]): string;
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