feat(v027): IPC inbox:navigate — 외부에서 설정 페이지 진입

tests/unit/App.test.tsx

@@ -1,7 +1,7 @@
 // @vitest-environment jsdom
 import { describe, it, expect, vi, beforeEach } from 'vitest';
 import '@testing-library/jest-dom/vitest';
-import { render, screen, fireEvent, cleanup } from '@testing-library/react';
+import { render, screen, fireEvent, cleanup, waitFor } from '@testing-library/react';
 
 vi.mock('../../src/renderer/inbox/api.js', () => ({
   inboxApi: {
@@ -20,6 +20,7 @@ vi.mock('../../src/renderer/inbox/api.js', () => ({
     onNoteUpdated: vi.fn(() => () => undefined),
     onOllamaStatus: vi.fn(() => () => undefined),
     onOpenOllamaSettings: vi.fn(() => () => undefined),
+    onNavigate: vi.fn(() => () => undefined),
     // 4 섹션 mounted 시 호출되는 stub
     loadOllamaSettings: vi.fn(async () => ({ endpoint: '', model: '' })),
     saveOllamaSettings: vi.fn(async () => ({ ok: true })),
@@ -39,6 +40,7 @@ vi.mock('../../src/renderer/inbox/api.js', () => ({
 
 import { App } from '../../src/renderer/inbox/App';
 import { useInbox } from '../../src/renderer/inbox/store';
+import { inboxApi } from '../../src/renderer/inbox/api.js';
 
 describe('App — settings view', () => {
   beforeEach(() => {
@@ -58,4 +60,19 @@ describe('App — settings view', () => {
     fireEvent.click(await screen.findByLabelText('설정 열기'));
     expect(useInbox.getState().showSettings).toBe(true);
   });
+
+  it('inbox:navigate "settings" event sets showSettings=true', async () => {
+    const navHandlers: Array<(view: 'inbox' | 'trash' | 'settings') => void> = [];
+    vi.mocked(inboxApi.onNavigate).mockImplementation((cb) => {
+      navHandlers.push(cb);
+      return () => {
+        const i = navHandlers.indexOf(cb);
+        if (i >= 0) navHandlers.splice(i, 1);
+      };
+    });
+    render(<App />);
+    await waitFor(() => expect(navHandlers.length).toBeGreaterThan(0));
+    navHandlers.forEach((h) => h('settings'));
+    await waitFor(() => expect(useInbox.getState().showSettings).toBe(true));
+  });
 });