chore(lint): burn down remaining warnings to zero

src/memory/chunker.test.ts

@@ -1,6 +1,5 @@
 import { describe, it, expect } from 'vitest';
 import { chunkText } from './chunker.js';
-import type { Chunk } from './chunker.js';
 
 describe('chunkText', () => {
   it('returns empty array for empty content', () => {
@@ -50,12 +49,18 @@ describe('chunkText', () => {
     // Line three is on actual line 3
     const lineThreeChunk = chunks.find((c) => c.text.includes('Line three'));
     expect(lineThreeChunk).toBeDefined();
-    expect(lineThreeChunk!.startLine).toBe(3);
+    if (!lineThreeChunk) {
+      throw new Error('Expected chunk containing Line three');
+    }
+    expect(lineThreeChunk.startLine).toBe(3);
 
     // Line five is on actual line 5
     const lineFiveChunk = chunks.find((c) => c.text.includes('Line five'));
     expect(lineFiveChunk).toBeDefined();
-    expect(lineFiveChunk!.startLine).toBe(5);
+    if (!lineFiveChunk) {
+      throw new Error('Expected chunk containing Line five');
+    }
+    expect(lineFiveChunk.startLine).toBe(5);
   });
 
   it('includes overlap between consecutive chunks', () => {