test(ai): cover shared client helpers

src/ai/client.test.ts

@@ -0,0 +1,21 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+
+import { extractAiText, normalizeOpenAiBaseUrl } from './client';
+
+test('normalizeOpenAiBaseUrl appends v1 when missing', () => {
+  assert.equal(normalizeOpenAiBaseUrl('https://openrouter.ai/api'), 'https://openrouter.ai/api/v1');
+  assert.equal(normalizeOpenAiBaseUrl('https://example.test/v1'), 'https://example.test/v1');
+});
+
+test('extractAiText joins OpenAI structured text parts', () => {
+  assert.equal(
+    extractAiText([
+      { type: 'text', text: 'hello ' },
+      { type: 'text', text: 'world' },
+      { type: 'image', text: 'ignored' },
+    ]),
+    'hello world',
+  );
+  assert.equal(extractAiText(' plain text '), 'plain text');
+});