feat: integrate learning module

tests/unit/learning-speech-client.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect, it, vi } from 'vitest';
+import { createLearningSpeechClient } from '@electron/services/learning-speech-client';
+
+describe('Learning speech client', () => {
+  it('keeps authentication in Main and forwards bounded multipart audio', async () => {
+    const fetchImpl = vi.fn<typeof fetch>().mockResolvedValue(new Response(
+      JSON.stringify({ text: '什么是变量', model: 'stt' }),
+      { status: 200, headers: { 'Content-Type': 'application/json' } },
+    ));
+    const client = createLearningSpeechClient({
+      fetchImpl,
+      getAccessToken: vi.fn().mockResolvedValue('main-owned-token'),
+      apiBaseUrl: 'https://square.example',
+    });
+
+    await expect(client.transcribe({
+      audio: new Uint8Array([1, 2, 3]),
+      fileName: 'voice.webm',
+      mimeType: 'audio/webm',
+      language: 'zh-CN',
+    })).resolves.toEqual({ text: '什么是变量' });
+
+    const [url, init] = fetchImpl.mock.calls[0];
+    expect(url).toBe('https://square.example/api/speech/transcriptions');
+    expect(init?.headers).toEqual({ Authorization: 'Bearer main-owned-token' });
+    const form = init?.body as FormData;
+    expect(form.get('language')).toBe('zh-CN');
+    const file = form.get('audio') as File;
+    expect(file.name).toBe('voice.webm');
+    expect(new Uint8Array(await file.arrayBuffer())).toEqual(new Uint8Array([1, 2, 3]));
+  });
+});