diff --git a/tests/integration/phase7-modals-smoke.test.tsx b/tests/integration/phase7-modals-smoke.test.tsx
new file mode 100644
index 0000000..bafc480
--- /dev/null
+++ b/tests/integration/phase7-modals-smoke.test.tsx
@@ -0,0 +1,62 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { render, screen, waitFor } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import App from '@/App';
+import { useAppStore } from '@/stores/app-store';
+import { useCommandStore } from '@/stores/command-store';
+import { useSettingsStore } from '@/stores/settings-store';
+import { useFileStore } from '@/stores/file-store';
+import { useEditorStore } from '@/stores/editor-store';
+import { registerMenuCommands } from '@/lib/commands/register-menu-commands';
+
+vi.mock('@/lib/ipc', () => ({
+  ipc: {
+    app: {
+      getVersion: vi.fn().mockResolvedValue({ ok: true, data: '5.0.0' }),
+      openExternal: vi.fn().mockResolvedValue({ ok: true }),
+    },
+    menu: {
+      on: vi.fn().mockReturnValue(vi.fn()),
+ },
+  },
+}));
+
+describe('Phase 7 modals integration', () => {
+  beforeEach(() => {
+    localStorage.clear();
+    useAppStore.setState({ modal: { kind: null }, sidebarVisible: true, previewVisible: true, zenMode: false, paneSizes: { sidebar: 20, editor: 50, preview: 30 } } as any);
+    useCommandStore.setState({ handlers: {}, userBindings: {} } as any);
+    useSettingsStore.setState(useSettingsStore.getInitialState());
+    useFileStore.setState({ activeTabId: '/x.md', openTabs: [{ id: '/x.md', path: '/x.md', title: 'x.md', dirty: false }] } as any);
+    useEditorStore.setState({ buffers: new Map([['/x.md', { id: '/x.md', path: '/x.md', content: '# hi', dirty: false }]]) } as any);
+  });
+
+  it('dispatching settings.open from command store opens SettingsSheet', () => {
+    registerMenuCommands();
+    render(<App />);
+    useCommandStore.getState().dispatch('settings.open');
+    expect(screen.getByRole('dialog')).toBeInTheDocument();
+  });
+
+  it('AppHeader Settings button dispatches settings.open', async () => {
+    useSettingsStore.setState({ ...useSettingsStore.getInitialState(), welcomeDismissed: true });
+    registerMenuCommands();
+    render(<App />);
+    await userEvent.click(screen.getByRole('button', { name: 'Settings' }));
+    expect(useAppStore.getState().modal.kind).toBe('settings');
+  });
+
+  it('first launch with welcomeDismissed=false opens welcome modal', () => {
+    useSettingsStore.setState({ ...useSettingsStore.getInitialState(), welcomeDismissed: false });
+    registerMenuCommands();
+    render(<App />);
+    expect(useAppStore.getState().modal.kind).toBe('welcome');
+  });
+
+  it('first launch with welcomeDismissed=true does not open welcome', () => {
+    useSettingsStore.setState({ ...useSettingsStore.getInitialState(), welcomeDismissed: true });
+    registerMenuCommands();
+    render(<App />);
+    expect(useAppStore.getState().modal).toEqual({ kind: null });
+  });
+});