File episodic-memory.test.ts

test/episodic-memory.test.ts:None–None

import { describe, it, expect } from 'vitest';
import { rankEpisodes, buildEpisodeBlock, fileFreshness, type Episode } from '../src/context/episodic-memory.js';

const ep = (prompt: string, summary: string, files: string[] = []): Episode =>