Function chunk

test/retrieval.test.ts:18–20

(file: string, startLine: number, embedding: number[])

});

function chunk(file: string, startLine: number, embedding: number[]): Chunk {
  return { file, startLine, endLine: startLine + 29, text: `code in ${file}`, embedding, hash: `${file}:${startLine}` };
}

describe('rankChunks', () => {
  it('ranks by cosine similarity, best first, capped at topK', () => {